./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa --- 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 [2022-12-14 07:54:19,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:54:19,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:54:19,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:54:19,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:54:19,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:54:19,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:54:19,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:54:19,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:54:19,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:54:19,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:54:19,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:54:19,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:54:19,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:54:19,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:54:19,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:54:19,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:54:19,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:54:19,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:54:19,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:54:19,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:54:19,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:54:19,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:54:19,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:54:19,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:54:19,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:54:19,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:54:19,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:54:19,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:54:19,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:54:19,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:54:19,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:54:19,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:54:19,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:54:19,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:54:19,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:54:19,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:54:19,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:54:19,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:54:19,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:54:19,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:54:19,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 07:54:19,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:54:19,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:54:19,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:54:19,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:54:19,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:54:19,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:54:19,746 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:54:19,746 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:54:19,746 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:54:19,746 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:54:19,746 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:54:19,747 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:54:19,747 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:54:19,747 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:54:19,747 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:54:19,747 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:54:19,747 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:54:19,747 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:54:19,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 07:54:19,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 07:54:19,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:54:19,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:54:19,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:54:19,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:54:19,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:54:19,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:54:19,749 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 07:54:19,749 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 07:54:19,749 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 07:54:19,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:54:19,749 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:54:19,749 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:54:19,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:54:19,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:54:19,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:54:19,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:54:19,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:54:19,750 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:54:19,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:54:19,750 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:54:19,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:54:19,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:54:19,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa [2022-12-14 07:54:19,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:54:19,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:54:19,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:54:19,959 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:54:19,959 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:54:19,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-12-14 07:54:22,435 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:54:22,638 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:54:22,639 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-12-14 07:54:22,647 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/data/e9ba70d80/198f1eed4fe547bf838ef6a78add4c45/FLAG7e3ea4a4c [2022-12-14 07:54:23,013 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/data/e9ba70d80/198f1eed4fe547bf838ef6a78add4c45 [2022-12-14 07:54:23,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:54:23,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:54:23,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:54:23,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:54:23,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:54:23,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114a680e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23, skipping insertion in model container [2022-12-14 07:54:23,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:54:23,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:54:23,196 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_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2022-12-14 07:54:23,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,310 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,311 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,312 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,312 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:54:23,343 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:54:23,352 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_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2022-12-14 07:54:23,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:23,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:23,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:54:23,412 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:54:23,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23 WrapperNode [2022-12-14 07:54:23,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:54:23,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:54:23,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:54:23,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:54:23,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,451 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2022-12-14 07:54:23,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:54:23,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:54:23,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:54:23,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:54:23,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:54:23,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:54:23,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:54:23,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:54:23,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (1/1) ... [2022-12-14 07:54:23,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:54:23,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:54:23,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:54:23,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:54:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:54:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 07:54:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:54:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:54:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:54:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-14 07:54:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-14 07:54:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-14 07:54:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-14 07:54:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:54:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 07:54:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:54:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:54:23,536 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 07:54:23,644 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:54:23,647 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:54:23,951 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:54:24,045 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:54:24,046 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 07:54:24,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:24 BoogieIcfgContainer [2022-12-14 07:54:24,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:54:24,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:54:24,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:54:24,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:54:24,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:54:23" (1/3) ... [2022-12-14 07:54:24,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ce025c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:54:24, skipping insertion in model container [2022-12-14 07:54:24,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:23" (2/3) ... [2022-12-14 07:54:24,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ce025c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:54:24, skipping insertion in model container [2022-12-14 07:54:24,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:24" (3/3) ... [2022-12-14 07:54:24,053 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-12-14 07:54:24,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:54:24,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-12-14 07:54:24,067 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 07:54:24,102 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 07:54:24,125 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:54:24,135 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 107 transitions, 224 flow [2022-12-14 07:54:24,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 107 transitions, 224 flow [2022-12-14 07:54:24,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 107 transitions, 224 flow [2022-12-14 07:54:24,171 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2022-12-14 07:54:24,172 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 07:54:24,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-14 07:54:24,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 1528 [2022-12-14 07:54:28,326 INFO L134 LiptonReduction]: Checked pairs total: 3826 [2022-12-14 07:54:28,326 INFO L136 LiptonReduction]: Total number of compositions: 105 [2022-12-14 07:54:28,331 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 62 flow [2022-12-14 07:54:28,353 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 250 states, 241 states have (on average 2.4854771784232366) internal successors, (599), 249 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:28,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:54:28,370 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=FINITE_AUTOMATA, 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;@685348f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:54:28,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-14 07:54:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 241 states have (on average 2.4854771784232366) internal successors, (599), 249 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 07:54:28,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:28,380 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 07:54:28,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash 537, now seen corresponding path program 1 times [2022-12-14 07:54:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:28,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701659807] [2022-12-14 07:54:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:28,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:28,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:28,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701659807] [2022-12-14 07:54:28,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701659807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:28,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:28,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 07:54:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428445170] [2022-12-14 07:54:28,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:28,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:54:28,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:28,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:54:28,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:54:28,494 INFO L87 Difference]: Start difference. First operand has 250 states, 241 states have (on average 2.4854771784232366) internal successors, (599), 249 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:28,559 INFO L93 Difference]: Finished difference Result 236 states and 575 transitions. [2022-12-14 07:54:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:54:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-12-14 07:54:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:28,572 INFO L225 Difference]: With dead ends: 236 [2022-12-14 07:54:28,572 INFO L226 Difference]: Without dead ends: 236 [2022-12-14 07:54:28,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:54:28,576 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:28,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:54:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-12-14 07:54:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-12-14 07:54:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 231 states have (on average 2.4891774891774894) internal successors, (575), 235 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:28,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 575 transitions. [2022-12-14 07:54:28,628 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 575 transitions. Word has length 1 [2022-12-14 07:54:28,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:28,629 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 575 transitions. [2022-12-14 07:54:28,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 575 transitions. [2022-12-14 07:54:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:54:28,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:28,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:54:28,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:54:28,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:28,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 510331799, now seen corresponding path program 1 times [2022-12-14 07:54:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:28,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751875446] [2022-12-14 07:54:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:28,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:28,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:28,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751875446] [2022-12-14 07:54:28,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751875446] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:28,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:28,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:54:28,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726526947] [2022-12-14 07:54:28,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:28,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:54:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:54:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:54:28,821 INFO L87 Difference]: Start difference. First operand 236 states and 575 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:28,893 INFO L93 Difference]: Finished difference Result 200 states and 479 transitions. [2022-12-14 07:54:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:54:28,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 07:54:28,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:28,895 INFO L225 Difference]: With dead ends: 200 [2022-12-14 07:54:28,895 INFO L226 Difference]: Without dead ends: 194 [2022-12-14 07:54:28,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:54:28,897 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:28,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-12-14 07:54:28,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-12-14 07:54:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 192 states have (on average 2.4375) internal successors, (468), 193 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 468 transitions. [2022-12-14 07:54:28,909 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 468 transitions. Word has length 5 [2022-12-14 07:54:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:28,909 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 468 transitions. [2022-12-14 07:54:28,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 468 transitions. [2022-12-14 07:54:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:54:28,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:28,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:28,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:54:28,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:28,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash 802642055, now seen corresponding path program 1 times [2022-12-14 07:54:28,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:28,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135085594] [2022-12-14 07:54:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:28,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:29,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:29,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135085594] [2022-12-14 07:54:29,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135085594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:29,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:29,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:54:29,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923097813] [2022-12-14 07:54:29,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:29,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:54:29,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:29,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:54:29,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:54:29,424 INFO L87 Difference]: Start difference. First operand 194 states and 468 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:29,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:29,525 INFO L93 Difference]: Finished difference Result 194 states and 444 transitions. [2022-12-14 07:54:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:54:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 07:54:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:29,528 INFO L225 Difference]: With dead ends: 194 [2022-12-14 07:54:29,528 INFO L226 Difference]: Without dead ends: 194 [2022-12-14 07:54:29,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:54:29,529 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:29,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:29,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-12-14 07:54:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 176. [2022-12-14 07:54:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 174 states have (on average 2.396551724137931) internal successors, (417), 175 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 417 transitions. [2022-12-14 07:54:29,540 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 417 transitions. Word has length 7 [2022-12-14 07:54:29,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:29,540 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 417 transitions. [2022-12-14 07:54:29,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 417 transitions. [2022-12-14 07:54:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:54:29,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:29,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:29,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:54:29,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:29,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:29,541 INFO L85 PathProgramCache]: Analyzing trace with hash 802642072, now seen corresponding path program 1 times [2022-12-14 07:54:29,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:29,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932080814] [2022-12-14 07:54:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:29,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:29,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:29,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932080814] [2022-12-14 07:54:29,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932080814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:29,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:29,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:54:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784840869] [2022-12-14 07:54:29,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:29,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:54:29,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:54:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:54:29,791 INFO L87 Difference]: Start difference. First operand 176 states and 417 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:29,858 INFO L93 Difference]: Finished difference Result 140 states and 321 transitions. [2022-12-14 07:54:29,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:54:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 07:54:29,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:29,859 INFO L225 Difference]: With dead ends: 140 [2022-12-14 07:54:29,859 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 07:54:29,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:54:29,861 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:29,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 07:54:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-12-14 07:54:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.3093525179856114) internal successors, (321), 139 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 321 transitions. [2022-12-14 07:54:29,872 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 321 transitions. Word has length 7 [2022-12-14 07:54:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:29,873 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 321 transitions. [2022-12-14 07:54:29,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 321 transitions. [2022-12-14 07:54:29,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 07:54:29,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:29,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:29,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:54:29,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:29,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:29,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1982434920, now seen corresponding path program 1 times [2022-12-14 07:54:29,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:29,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124297686] [2022-12-14 07:54:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:29,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:30,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:30,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124297686] [2022-12-14 07:54:30,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124297686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:30,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:30,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:54:30,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508705529] [2022-12-14 07:54:30,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:30,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:54:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:54:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:54:30,075 INFO L87 Difference]: Start difference. First operand 140 states and 321 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:30,117 INFO L93 Difference]: Finished difference Result 134 states and 305 transitions. [2022-12-14 07:54:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:54:30,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 07:54:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:30,119 INFO L225 Difference]: With dead ends: 134 [2022-12-14 07:54:30,119 INFO L226 Difference]: Without dead ends: 134 [2022-12-14 07:54:30,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:54:30,120 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:30,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:54:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-12-14 07:54:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-12-14 07:54:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.293233082706767) internal successors, (305), 133 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 305 transitions. [2022-12-14 07:54:30,126 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 305 transitions. Word has length 10 [2022-12-14 07:54:30,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:30,126 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 305 transitions. [2022-12-14 07:54:30,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 305 transitions. [2022-12-14 07:54:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:54:30,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:30,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:30,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:54:30,128 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:30,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:30,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1883980341, now seen corresponding path program 1 times [2022-12-14 07:54:30,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:30,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982313511] [2022-12-14 07:54:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:30,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:30,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:30,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982313511] [2022-12-14 07:54:30,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982313511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:30,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:30,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:54:30,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276713742] [2022-12-14 07:54:30,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:30,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:54:30,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:54:30,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:54:30,825 INFO L87 Difference]: Start difference. First operand 134 states and 305 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:30,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:30,933 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2022-12-14 07:54:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:54:30,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 07:54:30,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:30,934 INFO L225 Difference]: With dead ends: 164 [2022-12-14 07:54:30,935 INFO L226 Difference]: Without dead ends: 164 [2022-12-14 07:54:30,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:54:30,935 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:30,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-12-14 07:54:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 152. [2022-12-14 07:54:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.2980132450331126) internal successors, (347), 151 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 347 transitions. [2022-12-14 07:54:30,941 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 347 transitions. Word has length 12 [2022-12-14 07:54:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:30,942 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 347 transitions. [2022-12-14 07:54:30,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 347 transitions. [2022-12-14 07:54:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:54:30,943 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:30,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:30,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:54:30,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:30,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1730064499, now seen corresponding path program 2 times [2022-12-14 07:54:30,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:30,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776581845] [2022-12-14 07:54:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:30,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:31,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:31,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776581845] [2022-12-14 07:54:31,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776581845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:31,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:31,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:54:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919171022] [2022-12-14 07:54:31,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:31,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:54:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:54:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:54:31,653 INFO L87 Difference]: Start difference. First operand 152 states and 347 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:31,829 INFO L93 Difference]: Finished difference Result 208 states and 466 transitions. [2022-12-14 07:54:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:54:31,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 07:54:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:31,831 INFO L225 Difference]: With dead ends: 208 [2022-12-14 07:54:31,831 INFO L226 Difference]: Without dead ends: 160 [2022-12-14 07:54:31,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:54:31,832 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:31,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-12-14 07:54:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 142. [2022-12-14 07:54:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.24822695035461) internal successors, (317), 141 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) [2022-12-14 07:54:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 317 transitions. [2022-12-14 07:54:31,835 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 317 transitions. Word has length 12 [2022-12-14 07:54:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:31,835 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 317 transitions. [2022-12-14 07:54:31,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 317 transitions. [2022-12-14 07:54:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 07:54:31,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:31,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:31,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:54:31,837 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:31,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:31,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1723462971, now seen corresponding path program 1 times [2022-12-14 07:54:31,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:31,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428671675] [2022-12-14 07:54:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:31,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:32,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:32,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428671675] [2022-12-14 07:54:32,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428671675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:32,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:32,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:54:32,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31681064] [2022-12-14 07:54:32,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:32,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 07:54:32,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:32,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 07:54:32,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:54:32,526 INFO L87 Difference]: Start difference. First operand 142 states and 317 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:32,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:32,696 INFO L93 Difference]: Finished difference Result 145 states and 321 transitions. [2022-12-14 07:54:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:54:32,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 07:54:32,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:32,698 INFO L225 Difference]: With dead ends: 145 [2022-12-14 07:54:32,698 INFO L226 Difference]: Without dead ends: 145 [2022-12-14 07:54:32,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-12-14 07:54:32,699 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:32,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:32,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-12-14 07:54:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2022-12-14 07:54:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.231404958677686) internal successors, (270), 121 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 270 transitions. [2022-12-14 07:54:32,704 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 270 transitions. Word has length 13 [2022-12-14 07:54:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:32,704 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 270 transitions. [2022-12-14 07:54:32,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 270 transitions. [2022-12-14 07:54:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 07:54:32,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:32,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:32,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 07:54:32,706 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1723731090, now seen corresponding path program 1 times [2022-12-14 07:54:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:32,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927549929] [2022-12-14 07:54:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:33,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:33,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927549929] [2022-12-14 07:54:33,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927549929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:33,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:33,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:54:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901771916] [2022-12-14 07:54:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:33,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:54:33,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:33,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:54:33,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:54:33,189 INFO L87 Difference]: Start difference. First operand 122 states and 270 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:33,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:33,320 INFO L93 Difference]: Finished difference Result 130 states and 285 transitions. [2022-12-14 07:54:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:54:33,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 07:54:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:33,321 INFO L225 Difference]: With dead ends: 130 [2022-12-14 07:54:33,322 INFO L226 Difference]: Without dead ends: 130 [2022-12-14 07:54:33,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:54:33,322 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:33,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-14 07:54:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 121. [2022-12-14 07:54:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 2.225) internal successors, (267), 120 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 267 transitions. [2022-12-14 07:54:33,327 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 267 transitions. Word has length 13 [2022-12-14 07:54:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:33,327 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 267 transitions. [2022-12-14 07:54:33,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 267 transitions. [2022-12-14 07:54:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:33,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:33,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:33,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:54:33,328 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1893367636, now seen corresponding path program 1 times [2022-12-14 07:54:33,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:33,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681188598] [2022-12-14 07:54:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:33,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:33,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:33,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681188598] [2022-12-14 07:54:33,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681188598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:33,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:33,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:54:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681639248] [2022-12-14 07:54:33,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:33,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:54:33,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:33,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:54:33,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:54:33,752 INFO L87 Difference]: Start difference. First operand 121 states and 267 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:33,986 INFO L93 Difference]: Finished difference Result 178 states and 383 transitions. [2022-12-14 07:54:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 07:54:33,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:33,987 INFO L225 Difference]: With dead ends: 178 [2022-12-14 07:54:33,987 INFO L226 Difference]: Without dead ends: 149 [2022-12-14 07:54:33,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:54:33,988 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:33,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-14 07:54:33,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 128. [2022-12-14 07:54:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.220472440944882) internal successors, (282), 127 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 282 transitions. [2022-12-14 07:54:33,992 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 282 transitions. Word has length 14 [2022-12-14 07:54:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:33,993 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 282 transitions. [2022-12-14 07:54:33,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 282 transitions. [2022-12-14 07:54:33,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:33,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:33,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:33,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 07:54:33,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:33,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1971011476, now seen corresponding path program 2 times [2022-12-14 07:54:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:33,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075357822] [2022-12-14 07:54:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:33,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:34,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:34,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075357822] [2022-12-14 07:54:34,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075357822] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:34,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:34,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:54:34,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648109526] [2022-12-14 07:54:34,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:34,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 07:54:34,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 07:54:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:54:34,470 INFO L87 Difference]: Start difference. First operand 128 states and 282 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:34,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:34,718 INFO L93 Difference]: Finished difference Result 151 states and 324 transitions. [2022-12-14 07:54:34,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:54:34,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:34,719 INFO L225 Difference]: With dead ends: 151 [2022-12-14 07:54:34,720 INFO L226 Difference]: Without dead ends: 142 [2022-12-14 07:54:34,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-12-14 07:54:34,720 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:34,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-14 07:54:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128. [2022-12-14 07:54:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.220472440944882) internal successors, (282), 127 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 282 transitions. [2022-12-14 07:54:34,723 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 282 transitions. Word has length 14 [2022-12-14 07:54:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:34,723 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 282 transitions. [2022-12-14 07:54:34,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 282 transitions. [2022-12-14 07:54:34,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:34,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:34,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:34,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 07:54:34,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:34,724 INFO L85 PathProgramCache]: Analyzing trace with hash 238079572, now seen corresponding path program 3 times [2022-12-14 07:54:34,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:34,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962020107] [2022-12-14 07:54:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:34,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:34,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:34,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962020107] [2022-12-14 07:54:34,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962020107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:34,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:34,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:54:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136171074] [2022-12-14 07:54:34,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:34,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:54:34,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:34,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:54:34,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:54:34,881 INFO L87 Difference]: Start difference. First operand 128 states and 282 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:34,977 INFO L93 Difference]: Finished difference Result 189 states and 405 transitions. [2022-12-14 07:54:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:54:34,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:34,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:34,979 INFO L225 Difference]: With dead ends: 189 [2022-12-14 07:54:34,979 INFO L226 Difference]: Without dead ends: 144 [2022-12-14 07:54:34,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:54:34,980 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:34,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:34,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-12-14 07:54:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2022-12-14 07:54:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 2.152173913043478) internal successors, (297), 138 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 297 transitions. [2022-12-14 07:54:34,983 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 297 transitions. Word has length 14 [2022-12-14 07:54:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:34,983 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 297 transitions. [2022-12-14 07:54:34,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:34,983 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 297 transitions. [2022-12-14 07:54:34,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:34,984 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:34,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:34,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 07:54:34,984 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:34,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash -517363562, now seen corresponding path program 4 times [2022-12-14 07:54:34,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:34,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974527132] [2022-12-14 07:54:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:34,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:35,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:35,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974527132] [2022-12-14 07:54:35,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974527132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:35,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:35,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:54:35,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157049962] [2022-12-14 07:54:35,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:35,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:54:35,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:35,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:54:35,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:54:35,242 INFO L87 Difference]: Start difference. First operand 139 states and 297 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:35,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:35,399 INFO L93 Difference]: Finished difference Result 175 states and 363 transitions. [2022-12-14 07:54:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:54:35,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:35,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:35,401 INFO L225 Difference]: With dead ends: 175 [2022-12-14 07:54:35,401 INFO L226 Difference]: Without dead ends: 147 [2022-12-14 07:54:35,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:54:35,402 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:35,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-14 07:54:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 133. [2022-12-14 07:54:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.1136363636363638) internal successors, (279), 132 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 279 transitions. [2022-12-14 07:54:35,406 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 279 transitions. Word has length 14 [2022-12-14 07:54:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:35,406 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 279 transitions. [2022-12-14 07:54:35,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:35,407 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 279 transitions. [2022-12-14 07:54:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:35,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:35,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:35,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 07:54:35,407 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash -439719722, now seen corresponding path program 5 times [2022-12-14 07:54:35,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:35,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113236612] [2022-12-14 07:54:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:35,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:35,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:35,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113236612] [2022-12-14 07:54:35,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113236612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:35,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:35,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:54:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133386939] [2022-12-14 07:54:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:35,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:54:35,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:54:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:54:35,724 INFO L87 Difference]: Start difference. First operand 133 states and 279 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:35,912 INFO L93 Difference]: Finished difference Result 150 states and 304 transitions. [2022-12-14 07:54:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:54:35,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:35,914 INFO L225 Difference]: With dead ends: 150 [2022-12-14 07:54:35,914 INFO L226 Difference]: Without dead ends: 141 [2022-12-14 07:54:35,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-14 07:54:35,914 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:35,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-14 07:54:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 122. [2022-12-14 07:54:35,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.1074380165289255) internal successors, (255), 121 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 255 transitions. [2022-12-14 07:54:35,918 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 255 transitions. Word has length 14 [2022-12-14 07:54:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:35,918 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 255 transitions. [2022-12-14 07:54:35,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 255 transitions. [2022-12-14 07:54:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:35,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:35,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:35,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 07:54:35,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash 446564968, now seen corresponding path program 1 times [2022-12-14 07:54:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:35,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812498024] [2022-12-14 07:54:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:36,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:36,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812498024] [2022-12-14 07:54:36,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812498024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:36,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:36,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:54:36,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113212939] [2022-12-14 07:54:36,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:36,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:54:36,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:54:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:54:36,196 INFO L87 Difference]: Start difference. First operand 122 states and 255 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:36,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:36,334 INFO L93 Difference]: Finished difference Result 147 states and 298 transitions. [2022-12-14 07:54:36,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:54:36,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:36,335 INFO L225 Difference]: With dead ends: 147 [2022-12-14 07:54:36,336 INFO L226 Difference]: Without dead ends: 119 [2022-12-14 07:54:36,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:54:36,336 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:36,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-14 07:54:36,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2022-12-14 07:54:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.061946902654867) internal successors, (233), 113 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 233 transitions. [2022-12-14 07:54:36,340 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 233 transitions. Word has length 14 [2022-12-14 07:54:36,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:36,341 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 233 transitions. [2022-12-14 07:54:36,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 233 transitions. [2022-12-14 07:54:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:36,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:36,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:36,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 07:54:36,341 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:36,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1454816760, now seen corresponding path program 2 times [2022-12-14 07:54:36,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:36,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763026747] [2022-12-14 07:54:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:36,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:36,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:36,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763026747] [2022-12-14 07:54:36,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763026747] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:36,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:36,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:54:36,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844043828] [2022-12-14 07:54:36,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:36,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:54:36,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:54:36,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:54:36,771 INFO L87 Difference]: Start difference. First operand 114 states and 233 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:36,967 INFO L93 Difference]: Finished difference Result 129 states and 253 transitions. [2022-12-14 07:54:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:54:36,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:36,968 INFO L225 Difference]: With dead ends: 129 [2022-12-14 07:54:36,968 INFO L226 Difference]: Without dead ends: 117 [2022-12-14 07:54:36,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:54:36,968 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:36,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-14 07:54:36,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2022-12-14 07:54:36,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.046728971962617) internal successors, (219), 107 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 219 transitions. [2022-12-14 07:54:36,972 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 219 transitions. Word has length 14 [2022-12-14 07:54:36,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:36,972 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 219 transitions. [2022-12-14 07:54:36,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:36,972 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 219 transitions. [2022-12-14 07:54:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:36,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:36,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:36,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 07:54:36,973 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1363627284, now seen corresponding path program 3 times [2022-12-14 07:54:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:36,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198179564] [2022-12-14 07:54:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:36,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:37,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:37,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198179564] [2022-12-14 07:54:37,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198179564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:37,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:37,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:54:37,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331742058] [2022-12-14 07:54:37,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:37,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:54:37,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:37,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:54:37,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:54:37,256 INFO L87 Difference]: Start difference. First operand 108 states and 219 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:37,392 INFO L93 Difference]: Finished difference Result 128 states and 252 transitions. [2022-12-14 07:54:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:54:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:37,394 INFO L225 Difference]: With dead ends: 128 [2022-12-14 07:54:37,394 INFO L226 Difference]: Without dead ends: 117 [2022-12-14 07:54:37,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:54:37,395 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:37,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:37,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-14 07:54:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2022-12-14 07:54:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.063063063063063) internal successors, (229), 111 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 229 transitions. [2022-12-14 07:54:37,397 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 229 transitions. Word has length 14 [2022-12-14 07:54:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:37,398 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 229 transitions. [2022-12-14 07:54:37,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 229 transitions. [2022-12-14 07:54:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:37,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:37,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:37,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 07:54:37,398 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:37,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash 383096940, now seen corresponding path program 4 times [2022-12-14 07:54:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:37,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213763535] [2022-12-14 07:54:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:37,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:37,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:37,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213763535] [2022-12-14 07:54:37,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213763535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:37,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:37,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:54:37,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553891831] [2022-12-14 07:54:37,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:37,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:54:37,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:37,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:54:37,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:54:37,849 INFO L87 Difference]: Start difference. First operand 112 states and 229 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:38,144 INFO L93 Difference]: Finished difference Result 125 states and 246 transitions. [2022-12-14 07:54:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:54:38,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:38,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:38,146 INFO L225 Difference]: With dead ends: 125 [2022-12-14 07:54:38,146 INFO L226 Difference]: Without dead ends: 114 [2022-12-14 07:54:38,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 07:54:38,147 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:38,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-14 07:54:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-12-14 07:54:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 105 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 215 transitions. [2022-12-14 07:54:38,149 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 215 transitions. Word has length 14 [2022-12-14 07:54:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:38,149 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 215 transitions. [2022-12-14 07:54:38,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 215 transitions. [2022-12-14 07:54:38,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:54:38,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:38,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:38,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 07:54:38,150 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:38,150 INFO L85 PathProgramCache]: Analyzing trace with hash 793280840, now seen corresponding path program 5 times [2022-12-14 07:54:38,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:38,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936174944] [2022-12-14 07:54:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:38,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:38,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936174944] [2022-12-14 07:54:38,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936174944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:38,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:38,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:54:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043766339] [2022-12-14 07:54:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:38,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:54:38,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:54:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:54:38,646 INFO L87 Difference]: Start difference. First operand 106 states and 215 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:38,948 INFO L93 Difference]: Finished difference Result 130 states and 256 transitions. [2022-12-14 07:54:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:54:38,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:54:38,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:38,949 INFO L225 Difference]: With dead ends: 130 [2022-12-14 07:54:38,949 INFO L226 Difference]: Without dead ends: 98 [2022-12-14 07:54:38,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:54:38,950 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:38,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-14 07:54:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 80. [2022-12-14 07:54:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.0759493670886076) internal successors, (164), 79 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 164 transitions. [2022-12-14 07:54:38,952 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 164 transitions. Word has length 14 [2022-12-14 07:54:38,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:38,953 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 164 transitions. [2022-12-14 07:54:38,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 164 transitions. [2022-12-14 07:54:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:54:38,953 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:38,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:38,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 07:54:38,953 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1686886790, now seen corresponding path program 1 times [2022-12-14 07:54:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:38,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659884884] [2022-12-14 07:54:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:38,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:39,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:39,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659884884] [2022-12-14 07:54:39,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659884884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:39,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:39,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:54:39,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045929381] [2022-12-14 07:54:39,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:39,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:54:39,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:39,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:54:39,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:54:39,343 INFO L87 Difference]: Start difference. First operand 80 states and 164 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:39,558 INFO L93 Difference]: Finished difference Result 138 states and 277 transitions. [2022-12-14 07:54:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 07:54:39,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:54:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:39,560 INFO L225 Difference]: With dead ends: 138 [2022-12-14 07:54:39,560 INFO L226 Difference]: Without dead ends: 111 [2022-12-14 07:54:39,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:54:39,560 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:39,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-14 07:54:39,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2022-12-14 07:54:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.077777777777778) internal successors, (187), 90 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 187 transitions. [2022-12-14 07:54:39,562 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 187 transitions. Word has length 15 [2022-12-14 07:54:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:39,563 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 187 transitions. [2022-12-14 07:54:39,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 187 transitions. [2022-12-14 07:54:39,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:54:39,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:39,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:39,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 07:54:39,563 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:39,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1609540550, now seen corresponding path program 2 times [2022-12-14 07:54:39,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:39,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777275223] [2022-12-14 07:54:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:39,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:40,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:40,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777275223] [2022-12-14 07:54:40,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777275223] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:40,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:40,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:54:40,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319189979] [2022-12-14 07:54:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:54:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:40,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:54:40,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:54:40,057 INFO L87 Difference]: Start difference. First operand 91 states and 187 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:40,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:40,285 INFO L93 Difference]: Finished difference Result 121 states and 238 transitions. [2022-12-14 07:54:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 07:54:40,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:54:40,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:40,286 INFO L225 Difference]: With dead ends: 121 [2022-12-14 07:54:40,286 INFO L226 Difference]: Without dead ends: 103 [2022-12-14 07:54:40,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:54:40,287 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:40,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-14 07:54:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2022-12-14 07:54:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 2.0365853658536586) internal successors, (167), 82 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 167 transitions. [2022-12-14 07:54:40,289 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 167 transitions. Word has length 15 [2022-12-14 07:54:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:40,289 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 167 transitions. [2022-12-14 07:54:40,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 167 transitions. [2022-12-14 07:54:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:54:40,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:40,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 07:54:40,290 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:40,290 INFO L85 PathProgramCache]: Analyzing trace with hash 971551690, now seen corresponding path program 3 times [2022-12-14 07:54:40,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:40,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217710339] [2022-12-14 07:54:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:40,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:40,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:40,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217710339] [2022-12-14 07:54:40,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217710339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:40,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:40,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:54:40,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050566428] [2022-12-14 07:54:40,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:40,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:54:40,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:54:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:54:40,701 INFO L87 Difference]: Start difference. First operand 83 states and 167 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:40,940 INFO L93 Difference]: Finished difference Result 109 states and 212 transitions. [2022-12-14 07:54:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:54:40,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:54:40,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:40,941 INFO L225 Difference]: With dead ends: 109 [2022-12-14 07:54:40,941 INFO L226 Difference]: Without dead ends: 89 [2022-12-14 07:54:40,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-14 07:54:40,942 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:40,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-14 07:54:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 75. [2022-12-14 07:54:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.054054054054054) internal successors, (152), 74 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 152 transitions. [2022-12-14 07:54:40,944 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 152 transitions. Word has length 15 [2022-12-14 07:54:40,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:40,944 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 152 transitions. [2022-12-14 07:54:40,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:40,944 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 152 transitions. [2022-12-14 07:54:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:54:40,944 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:40,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:40,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 07:54:40,944 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash 889857400, now seen corresponding path program 4 times [2022-12-14 07:54:40,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:40,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981375711] [2022-12-14 07:54:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:40,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:41,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:41,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981375711] [2022-12-14 07:54:41,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981375711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:41,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:41,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 07:54:41,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571372557] [2022-12-14 07:54:41,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:41,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 07:54:41,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:41,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 07:54:41,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:54:41,597 INFO L87 Difference]: Start difference. First operand 75 states and 152 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:41,861 INFO L93 Difference]: Finished difference Result 134 states and 261 transitions. [2022-12-14 07:54:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 07:54:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:54:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:41,862 INFO L225 Difference]: With dead ends: 134 [2022-12-14 07:54:41,862 INFO L226 Difference]: Without dead ends: 101 [2022-12-14 07:54:41,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-12-14 07:54:41,863 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-14 07:54:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2022-12-14 07:54:41,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.0786516853932584) internal successors, (185), 89 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 185 transitions. [2022-12-14 07:54:41,864 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 185 transitions. Word has length 15 [2022-12-14 07:54:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:41,865 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 185 transitions. [2022-12-14 07:54:41,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 185 transitions. [2022-12-14 07:54:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:54:41,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:41,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:41,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 07:54:41,865 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 967203640, now seen corresponding path program 5 times [2022-12-14 07:54:41,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:41,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397649651] [2022-12-14 07:54:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:42,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:42,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397649651] [2022-12-14 07:54:42,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397649651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:42,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:42,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 07:54:42,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017082118] [2022-12-14 07:54:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:42,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 07:54:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 07:54:42,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-14 07:54:42,572 INFO L87 Difference]: Start difference. First operand 90 states and 185 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:42,785 INFO L93 Difference]: Finished difference Result 121 states and 241 transitions. [2022-12-14 07:54:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:54:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:54:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:42,786 INFO L225 Difference]: With dead ends: 121 [2022-12-14 07:54:42,786 INFO L226 Difference]: Without dead ends: 103 [2022-12-14 07:54:42,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-12-14 07:54:42,787 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:42,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:42,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-14 07:54:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 82. [2022-12-14 07:54:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.037037037037037) internal successors, (165), 81 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 165 transitions. [2022-12-14 07:54:42,789 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 165 transitions. Word has length 15 [2022-12-14 07:54:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:42,789 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 165 transitions. [2022-12-14 07:54:42,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 165 transitions. [2022-12-14 07:54:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:54:42,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:42,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:42,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 07:54:42,790 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:42,791 INFO L85 PathProgramCache]: Analyzing trace with hash -746671416, now seen corresponding path program 6 times [2022-12-14 07:54:42,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:42,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765078807] [2022-12-14 07:54:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:42,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:43,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:43,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765078807] [2022-12-14 07:54:43,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765078807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:43,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:43,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 07:54:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613092188] [2022-12-14 07:54:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:43,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 07:54:43,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 07:54:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-14 07:54:43,631 INFO L87 Difference]: Start difference. First operand 82 states and 165 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:43,868 INFO L93 Difference]: Finished difference Result 138 states and 273 transitions. [2022-12-14 07:54:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:54:43,868 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:54:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:43,869 INFO L225 Difference]: With dead ends: 138 [2022-12-14 07:54:43,869 INFO L226 Difference]: Without dead ends: 89 [2022-12-14 07:54:43,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-12-14 07:54:43,870 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:43,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:54:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-14 07:54:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-12-14 07:54:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 88 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 181 transitions. [2022-12-14 07:54:43,872 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 181 transitions. Word has length 15 [2022-12-14 07:54:43,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:43,872 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 181 transitions. [2022-12-14 07:54:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 181 transitions. [2022-12-14 07:54:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:54:43,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:43,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:43,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 07:54:43,873 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:43,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:43,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1178432088, now seen corresponding path program 7 times [2022-12-14 07:54:43,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:43,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175467402] [2022-12-14 07:54:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:43,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:44,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:44,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175467402] [2022-12-14 07:54:44,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175467402] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:44,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:44,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:54:44,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759015811] [2022-12-14 07:54:44,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:44,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 07:54:44,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:44,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 07:54:44,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:54:44,427 INFO L87 Difference]: Start difference. First operand 89 states and 181 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:44,590 INFO L93 Difference]: Finished difference Result 113 states and 215 transitions. [2022-12-14 07:54:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:54:44,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:54:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:44,590 INFO L225 Difference]: With dead ends: 113 [2022-12-14 07:54:44,590 INFO L226 Difference]: Without dead ends: 66 [2022-12-14 07:54:44,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-12-14 07:54:44,591 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:44,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-12-14 07:54:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2022-12-14 07:54:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.8235294117647058) internal successors, (93), 51 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 93 transitions. [2022-12-14 07:54:44,592 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 93 transitions. Word has length 15 [2022-12-14 07:54:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:44,593 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 93 transitions. [2022-12-14 07:54:44,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 93 transitions. [2022-12-14 07:54:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:54:44,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:44,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:44,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 07:54:44,593 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:44,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:44,594 INFO L85 PathProgramCache]: Analyzing trace with hash -535442968, now seen corresponding path program 8 times [2022-12-14 07:54:44,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:44,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284156424] [2022-12-14 07:54:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:44,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:45,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:45,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284156424] [2022-12-14 07:54:45,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284156424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:45,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:45,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 07:54:45,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802473925] [2022-12-14 07:54:45,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:45,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:54:45,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:54:45,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:54:45,754 INFO L87 Difference]: Start difference. First operand 52 states and 93 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:45,986 INFO L93 Difference]: Finished difference Result 76 states and 129 transitions. [2022-12-14 07:54:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 07:54:45,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:54:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:45,987 INFO L225 Difference]: With dead ends: 76 [2022-12-14 07:54:45,987 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 07:54:45,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-14 07:54:45,988 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:45,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:54:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 07:54:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-12-14 07:54:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 76 transitions. [2022-12-14 07:54:45,989 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 76 transitions. Word has length 15 [2022-12-14 07:54:45,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:45,989 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 76 transitions. [2022-12-14 07:54:45,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:45,989 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 76 transitions. [2022-12-14 07:54:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:54:45,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:45,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:45,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 07:54:45,990 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-14 07:54:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:45,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2073400424, now seen corresponding path program 9 times [2022-12-14 07:54:45,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:45,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41278572] [2022-12-14 07:54:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:46,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:46,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41278572] [2022-12-14 07:54:46,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41278572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:46,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:46,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:54:46,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905565624] [2022-12-14 07:54:46,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:46,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:54:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:46,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:54:46,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:54:46,374 INFO L87 Difference]: Start difference. First operand 44 states and 76 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:46,430 INFO L93 Difference]: Finished difference Result 40 states and 68 transitions. [2022-12-14 07:54:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:54:46,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:54:46,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:46,431 INFO L225 Difference]: With dead ends: 40 [2022-12-14 07:54:46,431 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 07:54:46,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:54:46,431 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:46,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:54:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 07:54:46,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 07:54:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 07:54:46,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-12-14 07:54:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:46,433 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 07:54:46,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 07:54:46,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 07:54:46,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2022-12-14 07:54:46,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-12-14 07:54:46,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-12-14 07:54:46,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-12-14 07:54:46,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2022-12-14 07:54:46,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2022-12-14 07:54:46,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2022-12-14 07:54:46,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2022-12-14 07:54:46,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2022-12-14 07:54:46,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-12-14 07:54:46,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 07:54:46,439 INFO L445 BasicCegarLoop]: Path program histogram: [9, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:54:46,444 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 07:54:46,444 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:54:46,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:54:46 BasicIcfg [2022-12-14 07:54:46,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:54:46,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:54:46,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:54:46,447 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:54:46,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:24" (3/4) ... [2022-12-14 07:54:46,449 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 07:54:46,454 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-14 07:54:46,454 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-14 07:54:46,458 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2022-12-14 07:54:46,459 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 07:54:46,459 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 07:54:46,459 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 07:54:46,488 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:54:46,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:54:46,489 INFO L158 Benchmark]: Toolchain (without parser) took 23466.40ms. Allocated memory was 136.3MB in the beginning and 237.0MB in the end (delta: 100.7MB). Free memory was 103.3MB in the beginning and 78.6MB in the end (delta: 24.7MB). Peak memory consumption was 127.1MB. Max. memory is 16.1GB. [2022-12-14 07:54:46,489 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 86.6MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:54:46,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.16ms. Allocated memory is still 136.3MB. Free memory was 103.3MB in the beginning and 74.8MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-14 07:54:46,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.00ms. Allocated memory is still 136.3MB. Free memory was 74.8MB in the beginning and 71.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:54:46,490 INFO L158 Benchmark]: Boogie Preprocessor took 22.12ms. Allocated memory is still 136.3MB. Free memory was 71.8MB in the beginning and 69.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:54:46,490 INFO L158 Benchmark]: RCFGBuilder took 573.24ms. Allocated memory is still 136.3MB. Free memory was 69.7MB in the beginning and 73.3MB in the end (delta: -3.5MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2022-12-14 07:54:46,490 INFO L158 Benchmark]: TraceAbstraction took 22397.34ms. Allocated memory was 136.3MB in the beginning and 237.0MB in the end (delta: 100.7MB). Free memory was 72.6MB in the beginning and 81.7MB in the end (delta: -9.1MB). Peak memory consumption was 91.2MB. Max. memory is 16.1GB. [2022-12-14 07:54:46,491 INFO L158 Benchmark]: Witness Printer took 41.90ms. Allocated memory is still 237.0MB. Free memory was 80.7MB in the beginning and 78.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:54:46,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 86.6MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.16ms. Allocated memory is still 136.3MB. Free memory was 103.3MB in the beginning and 74.8MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.00ms. Allocated memory is still 136.3MB. Free memory was 74.8MB in the beginning and 71.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.12ms. Allocated memory is still 136.3MB. Free memory was 71.8MB in the beginning and 69.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 573.24ms. Allocated memory is still 136.3MB. Free memory was 69.7MB in the beginning and 73.3MB in the end (delta: -3.5MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. * TraceAbstraction took 22397.34ms. Allocated memory was 136.3MB in the beginning and 237.0MB in the end (delta: 100.7MB). Free memory was 72.6MB in the beginning and 81.7MB in the end (delta: -9.1MB). Peak memory consumption was 91.2MB. Max. memory is 16.1GB. * Witness Printer took 41.90ms. Allocated memory is still 237.0MB. Free memory was 80.7MB in the beginning and 78.6MB 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: 4.2s, 112 PlacesBefore, 33 PlacesAfterwards, 107 TransitionsBefore, 26 TransitionsAfterwards, 1528 CoEnabledTransitionPairs, 6 FixpointIterations, 48 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 105 TotalNumberOfCompositions, 3826 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1669, independent: 1532, independent conditional: 0, independent unconditional: 1532, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1014, independent: 968, independent conditional: 0, independent unconditional: 968, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1014, independent: 965, independent conditional: 0, independent unconditional: 965, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 388, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 381, dependent conditional: 0, dependent unconditional: 381, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1669, independent: 564, independent conditional: 0, independent unconditional: 564, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 1014, unknown conditional: 0, unknown unconditional: 1014] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 834]: 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, 128 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 22.3s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 666 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 666 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 326 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3155 IncrementalHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 326 mSolverCounterUnsat, 0 mSDtfsCounter, 3155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=0, InterpolantAutomatonStates: 195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 28 MinimizatonAttempts, 298 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 355 NumberOfCodeBlocks, 355 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 5341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 07:54:46,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab0e96e-6c53-4d5e-8ba1-ad9dd3c29b5b/bin/utaipan-gh47qXpMRh/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