./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:07:26,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:07:26,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:07:26,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:07:26,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:07:26,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:07:26,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:07:26,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:07:26,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:07:26,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:07:26,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:07:26,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:07:26,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:07:26,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:07:26,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:07:26,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:07:26,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:07:26,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:07:26,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:07:26,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:07:26,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:07:26,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:07:26,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:07:26,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:07:26,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:07:26,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:07:26,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:07:26,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:07:26,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:07:26,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:07:26,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:07:26,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:07:26,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:07:26,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:07:26,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:07:26,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:07:26,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:07:26,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:07:26,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:07:26,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:07:26,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:07:26,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 17:07:26,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:07:26,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:07:26,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:07:26,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:07:26,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:07:26,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:07:26,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:07:26,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:07:26,815 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:07:26,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:07:26,816 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:07:26,816 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:07:26,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:07:26,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:07:26,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:07:26,817 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 17:07:26,817 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 17:07:26,817 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 17:07:26,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:07:26,817 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:07:26,817 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:07:26,818 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:07:26,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:07:26,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:07:26,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:07:26,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:07:26,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:07:26,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:07:26,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:07:26,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:07:26,820 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:07:26,820 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:07:26,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:07:26,820 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:07:26,820 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_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e [2022-12-13 17:07:27,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:07:27,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:07:27,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:07:27,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:07:27,038 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:07:27,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-12-13 17:07:29,768 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:07:29,936 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:07:29,936 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-12-13 17:07:29,943 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/data/336f6a6d8/f420131d1c974f4eb5339ef430274c85/FLAGf19961970 [2022-12-13 17:07:29,956 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/data/336f6a6d8/f420131d1c974f4eb5339ef430274c85 [2022-12-13 17:07:29,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:07:29,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:07:29,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:07:29,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:07:29,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:07:29,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:07:29" (1/1) ... [2022-12-13 17:07:29,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea27bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:29, skipping insertion in model container [2022-12-13 17:07:29,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:07:29" (1/1) ... [2022-12-13 17:07:29,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:07:29,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:07:30,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,112 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_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-12-13 17:07:30,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:07:30,123 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:07:30,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:07:30,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:07:30,143 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_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-12-13 17:07:30,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:07:30,154 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:07:30,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30 WrapperNode [2022-12-13 17:07:30,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:07:30,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:07:30,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:07:30,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:07:30,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,180 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2022-12-13 17:07:30,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:07:30,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:07:30,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:07:30,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:07:30,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,200 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:07:30,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:07:30,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:07:30,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:07:30,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (1/1) ... [2022-12-13 17:07:30,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:07:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:07:30,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:07:30,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:07:30,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:07:30,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 17:07:30,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 17:07:30,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 17:07:30,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 17:07:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:07:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:07:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:07:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 17:07:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 17:07:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:07:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:07:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:07:30,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:07:30,261 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 17:07:30,347 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:07:30,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:07:30,549 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:07:30,605 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:07:30,606 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:07:30,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:07:30 BoogieIcfgContainer [2022-12-13 17:07:30,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:07:30,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:07:30,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:07:30,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:07:30,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:07:29" (1/3) ... [2022-12-13 17:07:30,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200c6883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:07:30, skipping insertion in model container [2022-12-13 17:07:30,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:07:30" (2/3) ... [2022-12-13 17:07:30,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200c6883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:07:30, skipping insertion in model container [2022-12-13 17:07:30,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:07:30" (3/3) ... [2022-12-13 17:07:30,617 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-12-13 17:07:30,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:07:30,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 17:07:30,642 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:07:30,697 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 17:07:30,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 95 transitions, 206 flow [2022-12-13 17:07:30,774 INFO L130 PetriNetUnfolder]: 1/93 cut-off events. [2022-12-13 17:07:30,774 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:07:30,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 1/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2022-12-13 17:07:30,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 95 transitions, 206 flow [2022-12-13 17:07:30,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 88 transitions, 188 flow [2022-12-13 17:07:30,787 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:07:30,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 88 transitions, 188 flow [2022-12-13 17:07:30,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 88 transitions, 188 flow [2022-12-13 17:07:30,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 88 transitions, 188 flow [2022-12-13 17:07:30,820 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-12-13 17:07:30,820 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:07:30,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 1/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-12-13 17:07:30,822 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2022-12-13 17:07:32,492 INFO L134 LiptonReduction]: Checked pairs total: 4749 [2022-12-13 17:07:32,493 INFO L136 LiptonReduction]: Total number of compositions: 71 [2022-12-13 17:07:32,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:07:32,508 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;@60dbc56d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:07:32,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 17:07:32,509 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 17:07:32,509 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:07:32,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:32,509 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 17:07:32,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:32,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:32,513 INFO L85 PathProgramCache]: Analyzing trace with hash 392, now seen corresponding path program 1 times [2022-12-13 17:07:32,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:32,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881170902] [2022-12-13 17:07:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:32,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:32,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881170902] [2022-12-13 17:07:32,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881170902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:32,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:32,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 17:07:32,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852741143] [2022-12-13 17:07:32,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:32,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:07:32,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:32,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:07:32,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:07:32,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 166 [2022-12-13 17:07:32,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:32,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 166 [2022-12-13 17:07:32,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:32,704 INFO L130 PetriNetUnfolder]: 105/272 cut-off events. [2022-12-13 17:07:32,704 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 17:07:32,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 272 events. 105/272 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1346 event pairs, 105 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 420. Up to 205 conditions per place. [2022-12-13 17:07:32,709 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 21 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2022-12-13 17:07:32,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 120 flow [2022-12-13 17:07:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:07:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 17:07:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 194 transitions. [2022-12-13 17:07:32,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5843373493975904 [2022-12-13 17:07:32,722 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 194 transitions. [2022-12-13 17:07:32,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 194 transitions. [2022-12-13 17:07:32,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:32,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 194 transitions. [2022-12-13 17:07:32,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,733 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,735 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 84 flow. Second operand 2 states and 194 transitions. [2022-12-13 17:07:32,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 120 flow [2022-12-13 17:07:32,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 17:07:32,740 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 70 flow [2022-12-13 17:07:32,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2022-12-13 17:07:32,744 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2022-12-13 17:07:32,744 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 70 flow [2022-12-13 17:07:32,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:32,745 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:07:32,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:07:32,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 386910, now seen corresponding path program 1 times [2022-12-13 17:07:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:32,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116395844] [2022-12-13 17:07:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:32,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:32,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:32,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116395844] [2022-12-13 17:07:32,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116395844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:32,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:32,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:07:32,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192897646] [2022-12-13 17:07:32,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:32,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:07:32,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:07:32,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:07:32,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 166 [2022-12-13 17:07:32,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:32,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 166 [2022-12-13 17:07:32,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:32,941 INFO L130 PetriNetUnfolder]: 99/256 cut-off events. [2022-12-13 17:07:32,942 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:07:32,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 256 events. 99/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1254 event pairs, 99 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 451. Up to 190 conditions per place. [2022-12-13 17:07:32,944 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 18 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2022-12-13 17:07:32,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 104 flow [2022-12-13 17:07:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:07:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:07:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2022-12-13 17:07:32,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 17:07:32,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2022-12-13 17:07:32,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2022-12-13 17:07:32,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:32,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2022-12-13 17:07:32,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,948 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 70 flow. Second operand 3 states and 249 transitions. [2022-12-13 17:07:32,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 104 flow [2022-12-13 17:07:32,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:07:32,949 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 68 flow [2022-12-13 17:07:32,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2022-12-13 17:07:32,950 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2022-12-13 17:07:32,950 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 68 flow [2022-12-13 17:07:32,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:32,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:32,950 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:07:32,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:07:32,951 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:32,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash 386911, now seen corresponding path program 1 times [2022-12-13 17:07:32,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:32,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140565924] [2022-12-13 17:07:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:33,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:33,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140565924] [2022-12-13 17:07:33,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140565924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:33,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:33,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:07:33,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353826665] [2022-12-13 17:07:33,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:33,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:07:33,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:07:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:07:33,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 166 [2022-12-13 17:07:33,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:33,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 166 [2022-12-13 17:07:33,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:33,088 INFO L130 PetriNetUnfolder]: 93/240 cut-off events. [2022-12-13 17:07:33,089 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:07:33,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 240 events. 93/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1133 event pairs, 93 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 422. Up to 176 conditions per place. [2022-12-13 17:07:33,090 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 16 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-12-13 17:07:33,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 98 flow [2022-12-13 17:07:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:07:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:07:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-12-13 17:07:33,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5200803212851406 [2022-12-13 17:07:33,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2022-12-13 17:07:33,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2022-12-13 17:07:33,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:33,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2022-12-13 17:07:33,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,094 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 259 transitions. [2022-12-13 17:07:33,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 98 flow [2022-12-13 17:07:33,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:07:33,095 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 65 flow [2022-12-13 17:07:33,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2022-12-13 17:07:33,096 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2022-12-13 17:07:33,096 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 65 flow [2022-12-13 17:07:33,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:33,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:07:33,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:07:33,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:33,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash 371828838, now seen corresponding path program 1 times [2022-12-13 17:07:33,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:33,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85922453] [2022-12-13 17:07:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:33,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:33,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:33,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85922453] [2022-12-13 17:07:33,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85922453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:33,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:33,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:07:33,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372911149] [2022-12-13 17:07:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:33,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:07:33,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:07:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:07:33,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 166 [2022-12-13 17:07:33,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:33,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 166 [2022-12-13 17:07:33,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:33,330 INFO L130 PetriNetUnfolder]: 69/188 cut-off events. [2022-12-13 17:07:33,330 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:07:33,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 188 events. 69/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 810 event pairs, 69 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 331. Up to 136 conditions per place. [2022-12-13 17:07:33,332 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 15 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-12-13 17:07:33,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 95 flow [2022-12-13 17:07:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:07:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:07:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2022-12-13 17:07:33,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5040160642570282 [2022-12-13 17:07:33,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2022-12-13 17:07:33,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2022-12-13 17:07:33,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:33,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2022-12-13 17:07:33,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,337 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 65 flow. Second operand 3 states and 251 transitions. [2022-12-13 17:07:33,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 95 flow [2022-12-13 17:07:33,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:07:33,338 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2022-12-13 17:07:33,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2022-12-13 17:07:33,339 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2022-12-13 17:07:33,339 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2022-12-13 17:07:33,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:33,340 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:07:33,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:07:33,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash 371828837, now seen corresponding path program 1 times [2022-12-13 17:07:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:33,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750282694] [2022-12-13 17:07:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:33,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:33,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:33,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750282694] [2022-12-13 17:07:33,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750282694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:33,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:33,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:07:33,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777381161] [2022-12-13 17:07:33,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:33,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:07:33,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:33,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:07:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:07:33,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 166 [2022-12-13 17:07:33,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:33,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 166 [2022-12-13 17:07:33,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:33,484 INFO L130 PetriNetUnfolder]: 45/136 cut-off events. [2022-12-13 17:07:33,484 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:07:33,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 136 events. 45/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 517 event pairs, 45 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 240. Up to 96 conditions per place. [2022-12-13 17:07:33,485 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 14 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-12-13 17:07:33,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 92 flow [2022-12-13 17:07:33,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:07:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:07:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2022-12-13 17:07:33,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46586345381526106 [2022-12-13 17:07:33,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2022-12-13 17:07:33,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2022-12-13 17:07:33,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:33,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2022-12-13 17:07:33,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,491 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 3 states and 232 transitions. [2022-12-13 17:07:33,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 92 flow [2022-12-13 17:07:33,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:07:33,491 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 63 flow [2022-12-13 17:07:33,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2022-12-13 17:07:33,492 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2022-12-13 17:07:33,492 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 63 flow [2022-12-13 17:07:33,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:33,493 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:33,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:07:33,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash -612757764, now seen corresponding path program 1 times [2022-12-13 17:07:33,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:33,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835954275] [2022-12-13 17:07:33,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:33,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:33,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:33,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835954275] [2022-12-13 17:07:33,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835954275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:33,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:33,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:07:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427099260] [2022-12-13 17:07:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:33,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:07:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:07:33,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:07:33,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 166 [2022-12-13 17:07:33,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:33,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 166 [2022-12-13 17:07:33,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:33,792 INFO L130 PetriNetUnfolder]: 133/295 cut-off events. [2022-12-13 17:07:33,792 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 17:07:33,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 295 events. 133/295 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1186 event pairs, 39 based on Foata normal form. 1/286 useless extension candidates. Maximal degree in co-relation 589. Up to 80 conditions per place. [2022-12-13 17:07:33,793 INFO L137 encePairwiseOnDemand]: 160/166 looper letters, 34 selfloop transitions, 6 changer transitions 16/64 dead transitions. [2022-12-13 17:07:33,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 257 flow [2022-12-13 17:07:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:07:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:07:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2022-12-13 17:07:33,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5189328743545611 [2022-12-13 17:07:33,795 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2022-12-13 17:07:33,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2022-12-13 17:07:33,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:33,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2022-12-13 17:07:33,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,798 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,798 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 63 flow. Second operand 7 states and 603 transitions. [2022-12-13 17:07:33,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 257 flow [2022-12-13 17:07:33,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:07:33,800 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 97 flow [2022-12-13 17:07:33,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2022-12-13 17:07:33,801 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2022-12-13 17:07:33,801 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 97 flow [2022-12-13 17:07:33,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:33,802 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:33,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:07:33,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:33,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1937581884, now seen corresponding path program 2 times [2022-12-13 17:07:33,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:33,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768828590] [2022-12-13 17:07:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:33,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:33,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768828590] [2022-12-13 17:07:33,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768828590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:33,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:33,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:07:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559437077] [2022-12-13 17:07:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:33,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:07:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:07:33,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:07:33,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 166 [2022-12-13 17:07:33,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:33,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:33,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 166 [2022-12-13 17:07:33,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:34,121 INFO L130 PetriNetUnfolder]: 204/536 cut-off events. [2022-12-13 17:07:34,121 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-12-13 17:07:34,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 536 events. 204/536 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2929 event pairs, 22 based on Foata normal form. 6/534 useless extension candidates. Maximal degree in co-relation 1067. Up to 91 conditions per place. [2022-12-13 17:07:34,124 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 41 selfloop transitions, 11 changer transitions 13/77 dead transitions. [2022-12-13 17:07:34,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 326 flow [2022-12-13 17:07:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:07:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 17:07:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 741 transitions. [2022-12-13 17:07:34,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4959839357429719 [2022-12-13 17:07:34,127 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 741 transitions. [2022-12-13 17:07:34,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 741 transitions. [2022-12-13 17:07:34,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:34,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 741 transitions. [2022-12-13 17:07:34,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,132 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,132 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 97 flow. Second operand 9 states and 741 transitions. [2022-12-13 17:07:34,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 326 flow [2022-12-13 17:07:34,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 322 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 17:07:34,136 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 169 flow [2022-12-13 17:07:34,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2022-12-13 17:07:34,137 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-12-13 17:07:34,137 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 169 flow [2022-12-13 17:07:34,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:34,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:34,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:07:34,138 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:34,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash -985712396, now seen corresponding path program 3 times [2022-12-13 17:07:34,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:34,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556671351] [2022-12-13 17:07:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:34,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:34,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:34,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556671351] [2022-12-13 17:07:34,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556671351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:34,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:34,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:07:34,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842994871] [2022-12-13 17:07:34,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:34,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:07:34,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:34,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:07:34,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:07:34,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 166 [2022-12-13 17:07:34,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:34,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 166 [2022-12-13 17:07:34,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:34,314 INFO L130 PetriNetUnfolder]: 149/455 cut-off events. [2022-12-13 17:07:34,314 INFO L131 PetriNetUnfolder]: For 453/473 co-relation queries the response was YES. [2022-12-13 17:07:34,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 455 events. 149/455 cut-off events. For 453/473 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2520 event pairs, 102 based on Foata normal form. 11/446 useless extension candidates. Maximal degree in co-relation 1179. Up to 302 conditions per place. [2022-12-13 17:07:34,316 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 25 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-13 17:07:34,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 244 flow [2022-12-13 17:07:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:07:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:07:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2022-12-13 17:07:34,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5401606425702812 [2022-12-13 17:07:34,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2022-12-13 17:07:34,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2022-12-13 17:07:34,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:34,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2022-12-13 17:07:34,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,321 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 169 flow. Second operand 3 states and 269 transitions. [2022-12-13 17:07:34,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 244 flow [2022-12-13 17:07:34,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 45 transitions, 242 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 17:07:34,324 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 175 flow [2022-12-13 17:07:34,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2022-12-13 17:07:34,325 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-12-13 17:07:34,325 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 175 flow [2022-12-13 17:07:34,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:34,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:34,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:07:34,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:34,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2004877370, now seen corresponding path program 4 times [2022-12-13 17:07:34,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:34,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705831180] [2022-12-13 17:07:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:34,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:34,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:34,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705831180] [2022-12-13 17:07:34,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705831180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:34,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:34,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:07:34,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878086635] [2022-12-13 17:07:34,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:34,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:07:34,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:07:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:07:34,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 166 [2022-12-13 17:07:34,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:34,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 166 [2022-12-13 17:07:34,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:34,650 INFO L130 PetriNetUnfolder]: 237/529 cut-off events. [2022-12-13 17:07:34,650 INFO L131 PetriNetUnfolder]: For 339/343 co-relation queries the response was YES. [2022-12-13 17:07:34,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 529 events. 237/529 cut-off events. For 339/343 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2538 event pairs, 85 based on Foata normal form. 4/516 useless extension candidates. Maximal degree in co-relation 1482. Up to 159 conditions per place. [2022-12-13 17:07:34,653 INFO L137 encePairwiseOnDemand]: 161/166 looper letters, 32 selfloop transitions, 5 changer transitions 21/70 dead transitions. [2022-12-13 17:07:34,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 416 flow [2022-12-13 17:07:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:07:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:07:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2022-12-13 17:07:34,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5094664371772806 [2022-12-13 17:07:34,655 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2022-12-13 17:07:34,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2022-12-13 17:07:34,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:34,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2022-12-13 17:07:34,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,658 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 175 flow. Second operand 7 states and 592 transitions. [2022-12-13 17:07:34,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 416 flow [2022-12-13 17:07:34,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:07:34,660 INFO L231 Difference]: Finished difference. Result has 60 places, 37 transitions, 174 flow [2022-12-13 17:07:34,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=60, PETRI_TRANSITIONS=37} [2022-12-13 17:07:34,660 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2022-12-13 17:07:34,661 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 37 transitions, 174 flow [2022-12-13 17:07:34,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:34,661 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:34,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:07:34,661 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:34,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:34,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1944139396, now seen corresponding path program 5 times [2022-12-13 17:07:34,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:34,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096643154] [2022-12-13 17:07:34,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:34,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:34,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:34,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096643154] [2022-12-13 17:07:34,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096643154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:34,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:34,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:07:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823468539] [2022-12-13 17:07:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:34,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:07:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:34,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:07:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:07:34,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 166 [2022-12-13 17:07:34,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 37 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:34,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 166 [2022-12-13 17:07:34,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:34,963 INFO L130 PetriNetUnfolder]: 166/472 cut-off events. [2022-12-13 17:07:34,964 INFO L131 PetriNetUnfolder]: For 470/494 co-relation queries the response was YES. [2022-12-13 17:07:34,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 472 events. 166/472 cut-off events. For 470/494 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2526 event pairs, 39 based on Foata normal form. 30/489 useless extension candidates. Maximal degree in co-relation 1287. Up to 130 conditions per place. [2022-12-13 17:07:34,965 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 38 selfloop transitions, 8 changer transitions 13/69 dead transitions. [2022-12-13 17:07:34,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 386 flow [2022-12-13 17:07:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:07:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 17:07:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 660 transitions. [2022-12-13 17:07:34,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49698795180722893 [2022-12-13 17:07:34,972 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 660 transitions. [2022-12-13 17:07:34,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 660 transitions. [2022-12-13 17:07:34,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:34,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 660 transitions. [2022-12-13 17:07:34,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.5) internal successors, (660), 8 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,974 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,974 INFO L175 Difference]: Start difference. First operand has 60 places, 37 transitions, 174 flow. Second operand 8 states and 660 transitions. [2022-12-13 17:07:34,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 386 flow [2022-12-13 17:07:34,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 369 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-13 17:07:34,977 INFO L231 Difference]: Finished difference. Result has 60 places, 35 transitions, 167 flow [2022-12-13 17:07:34,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=167, PETRI_PLACES=60, PETRI_TRANSITIONS=35} [2022-12-13 17:07:34,977 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2022-12-13 17:07:34,977 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 35 transitions, 167 flow [2022-12-13 17:07:34,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:34,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:34,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:34,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:07:34,978 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:34,978 INFO L85 PathProgramCache]: Analyzing trace with hash -326088938, now seen corresponding path program 6 times [2022-12-13 17:07:34,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:34,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586636246] [2022-12-13 17:07:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:34,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:35,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586636246] [2022-12-13 17:07:35,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586636246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:35,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:35,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:07:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419783291] [2022-12-13 17:07:35,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:35,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:07:35,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:35,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:07:35,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:07:35,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 166 [2022-12-13 17:07:35,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 35 transitions, 167 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:35,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 166 [2022-12-13 17:07:35,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:35,238 INFO L130 PetriNetUnfolder]: 93/261 cut-off events. [2022-12-13 17:07:35,239 INFO L131 PetriNetUnfolder]: For 291/295 co-relation queries the response was YES. [2022-12-13 17:07:35,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 261 events. 93/261 cut-off events. For 291/295 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1142 event pairs, 31 based on Foata normal form. 10/262 useless extension candidates. Maximal degree in co-relation 729. Up to 130 conditions per place. [2022-12-13 17:07:35,240 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 20 selfloop transitions, 3 changer transitions 10/43 dead transitions. [2022-12-13 17:07:35,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 43 transitions, 246 flow [2022-12-13 17:07:35,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:07:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 17:07:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2022-12-13 17:07:35,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4927710843373494 [2022-12-13 17:07:35,243 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2022-12-13 17:07:35,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2022-12-13 17:07:35,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:35,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2022-12-13 17:07:35,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,246 INFO L175 Difference]: Start difference. First operand has 60 places, 35 transitions, 167 flow. Second operand 5 states and 409 transitions. [2022-12-13 17:07:35,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 43 transitions, 246 flow [2022-12-13 17:07:35,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 224 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-12-13 17:07:35,248 INFO L231 Difference]: Finished difference. Result has 55 places, 29 transitions, 117 flow [2022-12-13 17:07:35,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=55, PETRI_TRANSITIONS=29} [2022-12-13 17:07:35,248 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-12-13 17:07:35,248 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 117 flow [2022-12-13 17:07:35,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:07:35,249 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:35,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:07:35,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 17:07:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:35,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1896514164, now seen corresponding path program 7 times [2022-12-13 17:07:35,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:35,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295517524] [2022-12-13 17:07:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:35,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:07:35,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295517524] [2022-12-13 17:07:35,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295517524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:35,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:35,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:07:35,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245858042] [2022-12-13 17:07:35,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:35,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:07:35,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:35,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:07:35,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:07:35,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 166 [2022-12-13 17:07:35,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:07:35,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 166 [2022-12-13 17:07:35,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:07:35,431 INFO L130 PetriNetUnfolder]: 31/86 cut-off events. [2022-12-13 17:07:35,431 INFO L131 PetriNetUnfolder]: For 56/58 co-relation queries the response was YES. [2022-12-13 17:07:35,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 86 events. 31/86 cut-off events. For 56/58 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 240 event pairs, 2 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 242. Up to 26 conditions per place. [2022-12-13 17:07:35,432 INFO L137 encePairwiseOnDemand]: 160/166 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2022-12-13 17:07:35,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 30 transitions, 164 flow [2022-12-13 17:07:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:07:35,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:07:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2022-12-13 17:07:35,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47332185886402756 [2022-12-13 17:07:35,435 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2022-12-13 17:07:35,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2022-12-13 17:07:35,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:07:35,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2022-12-13 17:07:35,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,440 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,440 INFO L175 Difference]: Start difference. First operand has 55 places, 29 transitions, 117 flow. Second operand 7 states and 550 transitions. [2022-12-13 17:07:35,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 30 transitions, 164 flow [2022-12-13 17:07:35,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 129 flow, removed 11 selfloop flow, removed 10 redundant places. [2022-12-13 17:07:35,441 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2022-12-13 17:07:35,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2022-12-13 17:07:35,441 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2022-12-13 17:07:35,441 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2022-12-13 17:07:35,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:35,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-13 17:07:35,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 17:07:35,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 17:07:35,445 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1] [2022-12-13 17:07:35,447 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 17:07:35,447 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:07:35,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:07:35 BasicIcfg [2022-12-13 17:07:35,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:07:35,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:07:35,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:07:35,450 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:07:35,450 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:07:30" (3/4) ... [2022-12-13 17:07:35,452 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 17:07:35,456 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 17:07:35,456 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 17:07:35,459 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-13 17:07:35,459 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 17:07:35,459 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 17:07:35,459 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 17:07:35,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 17:07:35,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:07:35,481 INFO L158 Benchmark]: Toolchain (without parser) took 5520.65ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 84.4MB in the beginning and 85.6MB in the end (delta: -1.3MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2022-12-13 17:07:35,481 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:07:35,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.98ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 69.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 17:07:35,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.54ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 67.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:07:35,481 INFO L158 Benchmark]: Boogie Preprocessor took 22.50ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 66.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:07:35,482 INFO L158 Benchmark]: RCFGBuilder took 404.18ms. Allocated memory is still 117.4MB. Free memory was 66.0MB in the beginning and 48.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 17:07:35,482 INFO L158 Benchmark]: TraceAbstraction took 4838.43ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 48.4MB in the beginning and 87.7MB in the end (delta: -39.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:07:35,482 INFO L158 Benchmark]: Witness Printer took 30.74ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:07:35,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.98ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 69.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.54ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 67.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.50ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 66.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 404.18ms. Allocated memory is still 117.4MB. Free memory was 66.0MB in the beginning and 48.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4838.43ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 48.4MB in the beginning and 87.7MB in the end (delta: -39.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 30.74ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 94 PlacesBefore, 43 PlacesAfterwards, 88 TransitionsBefore, 36 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 4749 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2429, independent: 2193, independent conditional: 0, independent unconditional: 2193, dependent: 236, dependent conditional: 0, dependent unconditional: 236, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 373, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2429, independent: 1838, independent conditional: 0, independent unconditional: 1838, dependent: 218, dependent conditional: 0, dependent unconditional: 218, unknown: 373, unknown conditional: 0, unknown unconditional: 373] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 152, Positive conditional cache size: 0, Positive unconditional cache size: 152, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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: 116]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 106]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 712 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 537 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1263 IncrementalHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 40 mSDtfsCounter, 1263 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=8, InterpolantAutomatonStates: 60, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 829 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2022-12-13 17:07:35,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ad0ef8-fd9f-42fc-a050-7febbbbe7450/bin/uautomizer-uyxdKDjOR8/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