./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur --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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:28:02,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:28:02,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:28:02,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:28:02,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:28:02,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:28:02,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:28:02,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:28:02,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:28:02,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:28:02,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:28:02,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:28:02,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:28:02,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:28:02,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:28:02,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:28:02,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:28:02,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:28:02,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:28:02,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:28:02,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:28:02,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:28:02,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:28:02,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:28:02,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:28:02,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:28:02,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:28:02,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:28:02,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:28:02,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:28:02,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:28:02,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:28:02,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:28:02,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:28:02,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:28:02,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:28:02,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:28:02,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:28:02,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:28:02,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:28:02,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:28:02,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 00:28:02,172 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:28:02,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:28:02,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:28:02,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:28:02,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:28:02,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:28:02,174 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:28:02,174 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:28:02,175 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:28:02,175 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:28:02,176 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:28:02,176 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:28:02,176 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:28:02,176 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:28:02,176 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:28:02,177 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:28:02,177 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:28:02,177 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:28:02,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:28:02,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:28:02,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:28:02,179 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:28:02,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:28:02,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:28:02,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:28:02,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:28:02,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:28:02,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:28:02,180 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:28:02,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:28:02,181 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:28:02,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:28:02,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:28:02,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:28:02,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:28:02,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:28:02,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:28:02,182 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:28:02,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:28:02,182 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:28:02,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:28:02,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:28:02,183 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_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2022-11-26 00:28:02,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:28:02,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:28:02,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:28:02,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:28:02,489 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:28:02,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-11-26 00:28:05,507 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:28:05,754 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:28:05,755 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-11-26 00:28:05,761 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/data/f2fbfd055/1fbb191d2e454de59d7c6b83d6c6975d/FLAGb3c258d40 [2022-11-26 00:28:05,776 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/data/f2fbfd055/1fbb191d2e454de59d7c6b83d6c6975d [2022-11-26 00:28:05,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:28:05,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:28:05,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:28:05,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:28:05,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:28:05,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:28:05" (1/1) ... [2022-11-26 00:28:05,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a658ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:05, skipping insertion in model container [2022-11-26 00:28:05,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:28:05" (1/1) ... [2022-11-26 00:28:05,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:28:05,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:28:05,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:05,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:05,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:05,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:05,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:05,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:05,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:05,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:05,996 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:05,996 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:05,998 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:05,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:05,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:05,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,023 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_424009e0-a735-47cb-8375-fec3fb039beb/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-11-26 00:28:06,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:28:06,038 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:28:06,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:28:06,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:28:06,076 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_424009e0-a735-47cb-8375-fec3fb039beb/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-11-26 00:28:06,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:28:06,091 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:28:06,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06 WrapperNode [2022-11-26 00:28:06,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:28:06,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:28:06,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:28:06,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:28:06,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,138 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2022-11-26 00:28:06,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:28:06,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:28:06,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:28:06,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:28:06,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:28:06,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:28:06,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:28:06,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:28:06,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (1/1) ... [2022-11-26 00:28:06,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:28:06,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:06,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:28:06,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:28:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:28:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-26 00:28:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-26 00:28:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-26 00:28:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-26 00:28:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-26 00:28:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-26 00:28:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-26 00:28:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-26 00:28:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:28:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-26 00:28:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-26 00:28:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:28:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:28:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-26 00:28:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-26 00:28:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:28:06,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:28:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:28:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:28:06,248 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:28:06,416 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:28:06,418 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:28:06,910 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:28:07,074 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:28:07,076 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:28:07,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:07 BoogieIcfgContainer [2022-11-26 00:28:07,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:28:07,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:28:07,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:28:07,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:28:07,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:28:05" (1/3) ... [2022-11-26 00:28:07,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d886ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:07, skipping insertion in model container [2022-11-26 00:28:07,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:06" (2/3) ... [2022-11-26 00:28:07,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d886ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:07, skipping insertion in model container [2022-11-26 00:28:07,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:07" (3/3) ... [2022-11-26 00:28:07,104 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2022-11-26 00:28:07,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:28:07,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-26 00:28:07,126 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:28:07,253 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-26 00:28:07,290 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:28:07,306 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 189 transitions, 418 flow [2022-11-26 00:28:07,310 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 189 transitions, 418 flow [2022-11-26 00:28:07,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 189 transitions, 418 flow [2022-11-26 00:28:07,432 INFO L130 PetriNetUnfolder]: 2/184 cut-off events. [2022-11-26 00:28:07,432 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-26 00:28:07,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 184 events. 2/184 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-11-26 00:28:07,446 INFO L119 LiptonReduction]: Number of co-enabled transitions 2702 [2022-11-26 00:28:18,199 INFO L134 LiptonReduction]: Checked pairs total: 6842 [2022-11-26 00:28:18,199 INFO L136 LiptonReduction]: Total number of compositions: 174 [2022-11-26 00:28:18,209 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 59 transitions, 158 flow [2022-11-26 00:28:18,421 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2423 states, 2401 states have (on average 3.8446480633069555) internal successors, (9231), 2422 states have internal predecessors, (9231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:18,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:28:18,458 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;@67f841fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:28:18,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-26 00:28:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2401 states have (on average 3.8446480633069555) internal successors, (9231), 2422 states have internal predecessors, (9231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:18,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-26 00:28:18,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:18,484 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-26 00:28:18,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:18,490 INFO L85 PathProgramCache]: Analyzing trace with hash 767, now seen corresponding path program 1 times [2022-11-26 00:28:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:18,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058740373] [2022-11-26 00:28:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:18,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:18,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:18,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058740373] [2022-11-26 00:28:18,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058740373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:18,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:18,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-26 00:28:18,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161522927] [2022-11-26 00:28:18,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:18,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:28:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:18,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:28:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:28:18,656 INFO L87 Difference]: Start difference. First operand has 2423 states, 2401 states have (on average 3.8446480633069555) internal successors, (9231), 2422 states have internal predecessors, (9231), 0 states have call successors, (0), 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) [2022-11-26 00:28:18,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:18,824 INFO L93 Difference]: Finished difference Result 2420 states and 9228 transitions. [2022-11-26 00:28:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:28:18,826 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 [2022-11-26 00:28:18,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:18,858 INFO L225 Difference]: With dead ends: 2420 [2022-11-26 00:28:18,859 INFO L226 Difference]: Without dead ends: 2420 [2022-11-26 00:28:18,860 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 [2022-11-26 00:28:18,863 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:18,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2022-11-26 00:28:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2420. [2022-11-26 00:28:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 2401 states have (on average 3.8433985839233653) internal successors, (9228), 2419 states have internal predecessors, (9228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 9228 transitions. [2022-11-26 00:28:19,060 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 9228 transitions. Word has length 1 [2022-11-26 00:28:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:19,061 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 9228 transitions. [2022-11-26 00:28:19,065 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) [2022-11-26 00:28:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 9228 transitions. [2022-11-26 00:28:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:28:19,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:19,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:28:19,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:28:19,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:19,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:19,071 INFO L85 PathProgramCache]: Analyzing trace with hash 753865, now seen corresponding path program 1 times [2022-11-26 00:28:19,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:19,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862119951] [2022-11-26 00:28:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:19,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:19,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:19,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862119951] [2022-11-26 00:28:19,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862119951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:19,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:19,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:19,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49835418] [2022-11-26 00:28:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:19,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:19,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:19,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:19,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:19,740 INFO L87 Difference]: Start difference. First operand 2420 states and 9228 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:19,900 INFO L93 Difference]: Finished difference Result 2335 states and 8924 transitions. [2022-11-26 00:28:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:19,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-11-26 00:28:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:19,919 INFO L225 Difference]: With dead ends: 2335 [2022-11-26 00:28:19,919 INFO L226 Difference]: Without dead ends: 2335 [2022-11-26 00:28:19,920 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 [2022-11-26 00:28:19,922 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:19,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:19,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2022-11-26 00:28:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2335. [2022-11-26 00:28:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2318 states have (on average 3.8498705780845555) internal successors, (8924), 2334 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 8924 transitions. [2022-11-26 00:28:20,036 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 8924 transitions. Word has length 3 [2022-11-26 00:28:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:20,037 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 8924 transitions. [2022-11-26 00:28:20,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 8924 transitions. [2022-11-26 00:28:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:28:20,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:20,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:28:20,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:28:20,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash 753866, now seen corresponding path program 1 times [2022-11-26 00:28:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:20,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100592476] [2022-11-26 00:28:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:20,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:20,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100592476] [2022-11-26 00:28:20,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100592476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:20,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:20,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:20,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71022837] [2022-11-26 00:28:20,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:20,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:20,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:20,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:20,255 INFO L87 Difference]: Start difference. First operand 2335 states and 8924 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:20,360 INFO L93 Difference]: Finished difference Result 2250 states and 8620 transitions. [2022-11-26 00:28:20,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:20,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-11-26 00:28:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:20,380 INFO L225 Difference]: With dead ends: 2250 [2022-11-26 00:28:20,380 INFO L226 Difference]: Without dead ends: 2250 [2022-11-26 00:28:20,380 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 [2022-11-26 00:28:20,381 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:20,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:20,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-11-26 00:28:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2250. [2022-11-26 00:28:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2235 states have (on average 3.8568232662192394) internal successors, (8620), 2249 states have internal predecessors, (8620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 8620 transitions. [2022-11-26 00:28:20,479 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 8620 transitions. Word has length 3 [2022-11-26 00:28:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:20,479 INFO L495 AbstractCegarLoop]: Abstraction has 2250 states and 8620 transitions. [2022-11-26 00:28:20,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:20,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 8620 transitions. [2022-11-26 00:28:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:28:20,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:20,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:28:20,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:28:20,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash 724481238, now seen corresponding path program 1 times [2022-11-26 00:28:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:20,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544808555] [2022-11-26 00:28:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:20,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:20,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:20,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544808555] [2022-11-26 00:28:20,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544808555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:20,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:20,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061888312] [2022-11-26 00:28:20,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:20,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:20,562 INFO L87 Difference]: Start difference. First operand 2250 states and 8620 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) [2022-11-26 00:28:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:20,714 INFO L93 Difference]: Finished difference Result 2211 states and 8510 transitions. [2022-11-26 00:28:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:20,715 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 [2022-11-26 00:28:20,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:20,733 INFO L225 Difference]: With dead ends: 2211 [2022-11-26 00:28:20,733 INFO L226 Difference]: Without dead ends: 2211 [2022-11-26 00:28:20,734 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 [2022-11-26 00:28:20,734 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:20,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2022-11-26 00:28:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2211. [2022-11-26 00:28:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2198 states have (on average 3.8717015468607827) internal successors, (8510), 2210 states have internal predecessors, (8510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 8510 transitions. [2022-11-26 00:28:20,836 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 8510 transitions. Word has length 5 [2022-11-26 00:28:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:20,837 INFO L495 AbstractCegarLoop]: Abstraction has 2211 states and 8510 transitions. [2022-11-26 00:28:20,838 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) [2022-11-26 00:28:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 8510 transitions. [2022-11-26 00:28:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:28:20,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:20,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:28:20,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:28:20,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:20,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:20,840 INFO L85 PathProgramCache]: Analyzing trace with hash 724481239, now seen corresponding path program 1 times [2022-11-26 00:28:20,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:20,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141900379] [2022-11-26 00:28:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:20,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:20,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:20,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141900379] [2022-11-26 00:28:20,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141900379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:20,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:20,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:20,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466950258] [2022-11-26 00:28:20,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:20,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:20,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:20,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:20,998 INFO L87 Difference]: Start difference. First operand 2211 states and 8510 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) [2022-11-26 00:28:21,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:21,088 INFO L93 Difference]: Finished difference Result 2172 states and 8400 transitions. [2022-11-26 00:28:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:21,089 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 [2022-11-26 00:28:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:21,105 INFO L225 Difference]: With dead ends: 2172 [2022-11-26 00:28:21,105 INFO L226 Difference]: Without dead ends: 2172 [2022-11-26 00:28:21,106 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 [2022-11-26 00:28:21,107 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:21,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:21,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2022-11-26 00:28:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 2172. [2022-11-26 00:28:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2161 states have (on average 3.887089310504396) internal successors, (8400), 2171 states have internal predecessors, (8400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:21,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 8400 transitions. [2022-11-26 00:28:21,195 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 8400 transitions. Word has length 5 [2022-11-26 00:28:21,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:21,195 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 8400 transitions. [2022-11-26 00:28:21,195 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) [2022-11-26 00:28:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 8400 transitions. [2022-11-26 00:28:21,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:28:21,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:21,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:21,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:28:21,197 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:21,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash 441784612, now seen corresponding path program 1 times [2022-11-26 00:28:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:21,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419572120] [2022-11-26 00:28:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:21,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:21,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:21,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419572120] [2022-11-26 00:28:21,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419572120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:21,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:21,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:21,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771764207] [2022-11-26 00:28:21,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:21,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:21,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:21,332 INFO L87 Difference]: Start difference. First operand 2172 states and 8400 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-26 00:28:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:21,426 INFO L93 Difference]: Finished difference Result 2127 states and 8268 transitions. [2022-11-26 00:28:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-11-26 00:28:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:21,442 INFO L225 Difference]: With dead ends: 2127 [2022-11-26 00:28:21,442 INFO L226 Difference]: Without dead ends: 2127 [2022-11-26 00:28:21,442 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 [2022-11-26 00:28:21,443 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:21,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2022-11-26 00:28:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2127. [2022-11-26 00:28:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2118 states have (on average 3.903682719546742) internal successors, (8268), 2126 states have internal predecessors, (8268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:21,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 8268 transitions. [2022-11-26 00:28:21,524 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 8268 transitions. Word has length 7 [2022-11-26 00:28:21,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:21,524 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 8268 transitions. [2022-11-26 00:28:21,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-26 00:28:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 8268 transitions. [2022-11-26 00:28:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:28:21,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:21,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:21,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:28:21,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:21,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:21,526 INFO L85 PathProgramCache]: Analyzing trace with hash 441784613, now seen corresponding path program 1 times [2022-11-26 00:28:21,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:21,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582903191] [2022-11-26 00:28:21,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:21,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:21,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:21,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582903191] [2022-11-26 00:28:21,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582903191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:21,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:21,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:21,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832172696] [2022-11-26 00:28:21,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:21,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:21,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:21,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:21,656 INFO L87 Difference]: Start difference. First operand 2127 states and 8268 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-26 00:28:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:21,741 INFO L93 Difference]: Finished difference Result 2082 states and 8136 transitions. [2022-11-26 00:28:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:21,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-11-26 00:28:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:21,758 INFO L225 Difference]: With dead ends: 2082 [2022-11-26 00:28:21,758 INFO L226 Difference]: Without dead ends: 2082 [2022-11-26 00:28:21,758 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 [2022-11-26 00:28:21,760 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:21,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2022-11-26 00:28:21,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2022-11-26 00:28:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2075 states have (on average 3.920963855421687) internal successors, (8136), 2081 states have internal predecessors, (8136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 8136 transitions. [2022-11-26 00:28:21,842 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 8136 transitions. Word has length 7 [2022-11-26 00:28:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:21,842 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 8136 transitions. [2022-11-26 00:28:21,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-26 00:28:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 8136 transitions. [2022-11-26 00:28:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:28:21,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:21,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:21,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:28:21,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:21,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:21,846 INFO L85 PathProgramCache]: Analyzing trace with hash -646733130, now seen corresponding path program 1 times [2022-11-26 00:28:21,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:21,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717962522] [2022-11-26 00:28:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:21,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:21,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:21,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717962522] [2022-11-26 00:28:21,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717962522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:21,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:21,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508611768] [2022-11-26 00:28:21,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:21,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:21,947 INFO L87 Difference]: Start difference. First operand 2082 states and 8136 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:22,026 INFO L93 Difference]: Finished difference Result 1971 states and 7726 transitions. [2022-11-26 00:28:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-26 00:28:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:22,057 INFO L225 Difference]: With dead ends: 1971 [2022-11-26 00:28:22,057 INFO L226 Difference]: Without dead ends: 1971 [2022-11-26 00:28:22,057 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 [2022-11-26 00:28:22,061 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:22,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2022-11-26 00:28:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1971. [2022-11-26 00:28:22,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1966 states have (on average 3.9298067141403865) internal successors, (7726), 1970 states have internal predecessors, (7726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 7726 transitions. [2022-11-26 00:28:22,140 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 7726 transitions. Word has length 9 [2022-11-26 00:28:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:22,140 INFO L495 AbstractCegarLoop]: Abstraction has 1971 states and 7726 transitions. [2022-11-26 00:28:22,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 7726 transitions. [2022-11-26 00:28:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:28:22,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:22,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:22,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:28:22,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:22,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:22,143 INFO L85 PathProgramCache]: Analyzing trace with hash -646733132, now seen corresponding path program 1 times [2022-11-26 00:28:22,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:22,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979250662] [2022-11-26 00:28:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:22,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:22,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:22,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979250662] [2022-11-26 00:28:22,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979250662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:22,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:22,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:28:22,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156389210] [2022-11-26 00:28:22,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:22,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:22,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:22,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:22,210 INFO L87 Difference]: Start difference. First operand 1971 states and 7726 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:22,295 INFO L93 Difference]: Finished difference Result 1860 states and 7316 transitions. [2022-11-26 00:28:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:22,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-26 00:28:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:22,305 INFO L225 Difference]: With dead ends: 1860 [2022-11-26 00:28:22,306 INFO L226 Difference]: Without dead ends: 1860 [2022-11-26 00:28:22,306 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 [2022-11-26 00:28:22,308 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:22,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-11-26 00:28:22,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1860. [2022-11-26 00:28:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1857 states have (on average 3.9396876682821755) internal successors, (7316), 1859 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 7316 transitions. [2022-11-26 00:28:22,377 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 7316 transitions. Word has length 9 [2022-11-26 00:28:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:22,378 INFO L495 AbstractCegarLoop]: Abstraction has 1860 states and 7316 transitions. [2022-11-26 00:28:22,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 7316 transitions. [2022-11-26 00:28:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:28:22,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:22,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:22,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:28:22,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:22,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1259736871, now seen corresponding path program 1 times [2022-11-26 00:28:22,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:22,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434238875] [2022-11-26 00:28:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:22,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:22,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:22,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434238875] [2022-11-26 00:28:22,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434238875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:22,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:22,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:22,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616933689] [2022-11-26 00:28:22,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:22,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:28:22,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:28:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:22,685 INFO L87 Difference]: Start difference. First operand 1860 states and 7316 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:22,759 INFO L93 Difference]: Finished difference Result 1536 states and 5885 transitions. [2022-11-26 00:28:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:22,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-26 00:28:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:22,767 INFO L225 Difference]: With dead ends: 1536 [2022-11-26 00:28:22,767 INFO L226 Difference]: Without dead ends: 1536 [2022-11-26 00:28:22,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:22,768 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:22,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:22,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-11-26 00:28:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1536. [2022-11-26 00:28:22,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1534 states have (on average 3.8363754889178616) internal successors, (5885), 1535 states have internal predecessors, (5885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 5885 transitions. [2022-11-26 00:28:22,864 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 5885 transitions. Word has length 11 [2022-11-26 00:28:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:22,864 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 5885 transitions. [2022-11-26 00:28:22,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 5885 transitions. [2022-11-26 00:28:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:28:22,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:22,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:22,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:28:22,866 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:22,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1259736872, now seen corresponding path program 1 times [2022-11-26 00:28:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:22,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215641295] [2022-11-26 00:28:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:23,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:23,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215641295] [2022-11-26 00:28:23,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215641295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:23,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:23,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:28:23,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38824078] [2022-11-26 00:28:23,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:23,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:23,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:23,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:23,175 INFO L87 Difference]: Start difference. First operand 1536 states and 5885 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:23,281 INFO L93 Difference]: Finished difference Result 1212 states and 4454 transitions. [2022-11-26 00:28:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:23,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-26 00:28:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:23,287 INFO L225 Difference]: With dead ends: 1212 [2022-11-26 00:28:23,287 INFO L226 Difference]: Without dead ends: 1212 [2022-11-26 00:28:23,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:23,288 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:23,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:28:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-11-26 00:28:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2022-11-26 00:28:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1211 states have (on average 3.6779521056977704) internal successors, (4454), 1211 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 4454 transitions. [2022-11-26 00:28:23,329 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 4454 transitions. Word has length 11 [2022-11-26 00:28:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:23,329 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 4454 transitions. [2022-11-26 00:28:23,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 4454 transitions. [2022-11-26 00:28:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:23,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:23,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:23,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:28:23,334 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1537782786, now seen corresponding path program 1 times [2022-11-26 00:28:23,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:23,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077236497] [2022-11-26 00:28:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:23,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:24,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:24,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077236497] [2022-11-26 00:28:24,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077236497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:24,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:24,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:24,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243024565] [2022-11-26 00:28:24,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:24,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:28:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:24,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:28:24,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:24,139 INFO L87 Difference]: Start difference. First operand 1212 states and 4454 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:24,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:24,368 INFO L93 Difference]: Finished difference Result 1781 states and 6257 transitions. [2022-11-26 00:28:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:24,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:24,375 INFO L225 Difference]: With dead ends: 1781 [2022-11-26 00:28:24,375 INFO L226 Difference]: Without dead ends: 1292 [2022-11-26 00:28:24,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:24,375 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:24,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-11-26 00:28:24,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2022-11-26 00:28:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 3.450038729666925) internal successors, (4454), 1291 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 4454 transitions. [2022-11-26 00:28:24,420 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 4454 transitions. Word has length 32 [2022-11-26 00:28:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:24,420 INFO L495 AbstractCegarLoop]: Abstraction has 1292 states and 4454 transitions. [2022-11-26 00:28:24,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 4454 transitions. [2022-11-26 00:28:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:24,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:24,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:24,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:28:24,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:24,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash 967871914, now seen corresponding path program 2 times [2022-11-26 00:28:24,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:24,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355622981] [2022-11-26 00:28:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:24,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:24,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:24,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355622981] [2022-11-26 00:28:24,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355622981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:24,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:24,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:24,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778072428] [2022-11-26 00:28:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:24,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:24,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:24,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:24,791 INFO L87 Difference]: Start difference. First operand 1292 states and 4454 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:25,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:25,053 INFO L93 Difference]: Finished difference Result 1462 states and 5133 transitions. [2022-11-26 00:28:25,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:28:25,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:25,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:25,059 INFO L225 Difference]: With dead ends: 1462 [2022-11-26 00:28:25,059 INFO L226 Difference]: Without dead ends: 1462 [2022-11-26 00:28:25,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:25,060 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:25,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-26 00:28:25,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1370. [2022-11-26 00:28:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.4704163623082542) internal successors, (4751), 1369 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4751 transitions. [2022-11-26 00:28:25,105 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4751 transitions. Word has length 32 [2022-11-26 00:28:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:25,106 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 4751 transitions. [2022-11-26 00:28:25,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4751 transitions. [2022-11-26 00:28:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:25,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:25,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:25,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:28:25,110 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:25,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1436366990, now seen corresponding path program 3 times [2022-11-26 00:28:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:25,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925978989] [2022-11-26 00:28:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:25,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:25,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:25,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925978989] [2022-11-26 00:28:25,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925978989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:25,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:25,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:28:25,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961824626] [2022-11-26 00:28:25,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:25,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:28:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:25,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:28:25,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:25,434 INFO L87 Difference]: Start difference. First operand 1370 states and 4751 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:25,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:25,785 INFO L93 Difference]: Finished difference Result 1584 states and 5550 transitions. [2022-11-26 00:28:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:28:25,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:25,792 INFO L225 Difference]: With dead ends: 1584 [2022-11-26 00:28:25,792 INFO L226 Difference]: Without dead ends: 1584 [2022-11-26 00:28:25,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:25,793 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:25,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2022-11-26 00:28:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1460. [2022-11-26 00:28:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.4681288553803977) internal successors, (5060), 1459 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5060 transitions. [2022-11-26 00:28:25,854 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5060 transitions. Word has length 32 [2022-11-26 00:28:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:25,854 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 5060 transitions. [2022-11-26 00:28:25,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5060 transitions. [2022-11-26 00:28:25,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:25,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:25,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:25,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:28:25,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:25,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1315772762, now seen corresponding path program 4 times [2022-11-26 00:28:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:25,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117170149] [2022-11-26 00:28:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:25,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:26,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:26,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117170149] [2022-11-26 00:28:26,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117170149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:26,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:26,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:28:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672803286] [2022-11-26 00:28:26,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:26,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:28:26,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:28:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:26,226 INFO L87 Difference]: Start difference. First operand 1460 states and 5060 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:26,622 INFO L93 Difference]: Finished difference Result 3418 states and 11036 transitions. [2022-11-26 00:28:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:28:26,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:26,637 INFO L225 Difference]: With dead ends: 3418 [2022-11-26 00:28:26,637 INFO L226 Difference]: Without dead ends: 3410 [2022-11-26 00:28:26,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:26,640 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:26,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2022-11-26 00:28:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 1992. [2022-11-26 00:28:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1991 states have (on average 3.3711702661978906) internal successors, (6712), 1991 states have internal predecessors, (6712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 6712 transitions. [2022-11-26 00:28:26,728 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 6712 transitions. Word has length 32 [2022-11-26 00:28:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:26,728 INFO L495 AbstractCegarLoop]: Abstraction has 1992 states and 6712 transitions. [2022-11-26 00:28:26,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 6712 transitions. [2022-11-26 00:28:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:26,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:26,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:26,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:28:26,735 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:26,736 INFO L85 PathProgramCache]: Analyzing trace with hash 314612334, now seen corresponding path program 5 times [2022-11-26 00:28:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:26,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516057684] [2022-11-26 00:28:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:26,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:27,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:27,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516057684] [2022-11-26 00:28:27,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516057684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:27,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:27,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:28:27,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833453075] [2022-11-26 00:28:27,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:27,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:28:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:28:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:27,231 INFO L87 Difference]: Start difference. First operand 1992 states and 6712 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:27,727 INFO L93 Difference]: Finished difference Result 2112 states and 7102 transitions. [2022-11-26 00:28:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:28:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:27,736 INFO L225 Difference]: With dead ends: 2112 [2022-11-26 00:28:27,736 INFO L226 Difference]: Without dead ends: 2100 [2022-11-26 00:28:27,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:28:27,737 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:27,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2022-11-26 00:28:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2004. [2022-11-26 00:28:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 2003 states have (on average 3.3559660509236147) internal successors, (6722), 2003 states have internal predecessors, (6722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 6722 transitions. [2022-11-26 00:28:27,801 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 6722 transitions. Word has length 32 [2022-11-26 00:28:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:27,801 INFO L495 AbstractCegarLoop]: Abstraction has 2004 states and 6722 transitions. [2022-11-26 00:28:27,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 6722 transitions. [2022-11-26 00:28:27,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:27,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:27,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:27,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:28:27,808 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:27,808 INFO L85 PathProgramCache]: Analyzing trace with hash 599993400, now seen corresponding path program 6 times [2022-11-26 00:28:27,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:27,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892571752] [2022-11-26 00:28:27,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:27,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:28,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:28,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892571752] [2022-11-26 00:28:28,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892571752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:28,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:28,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:28:28,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047512451] [2022-11-26 00:28:28,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:28,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:28:28,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:28:28,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:28,105 INFO L87 Difference]: Start difference. First operand 2004 states and 6722 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:28,601 INFO L93 Difference]: Finished difference Result 3542 states and 11710 transitions. [2022-11-26 00:28:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:28:28,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:28,616 INFO L225 Difference]: With dead ends: 3542 [2022-11-26 00:28:28,616 INFO L226 Difference]: Without dead ends: 3498 [2022-11-26 00:28:28,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:28:28,617 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:28,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2022-11-26 00:28:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2192. [2022-11-26 00:28:28,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2192 states, 2191 states have (on average 3.371976266544957) internal successors, (7388), 2191 states have internal predecessors, (7388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 7388 transitions. [2022-11-26 00:28:28,704 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 7388 transitions. Word has length 32 [2022-11-26 00:28:28,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:28,704 INFO L495 AbstractCegarLoop]: Abstraction has 2192 states and 7388 transitions. [2022-11-26 00:28:28,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:28,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 7388 transitions. [2022-11-26 00:28:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:28,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:28,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:28:28,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1696443294, now seen corresponding path program 7 times [2022-11-26 00:28:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:28,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598439993] [2022-11-26 00:28:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:28,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:29,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:29,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598439993] [2022-11-26 00:28:29,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598439993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:29,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:29,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:28:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300652785] [2022-11-26 00:28:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:29,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:28:29,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:28:29,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:29,012 INFO L87 Difference]: Start difference. First operand 2192 states and 7388 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:29,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:29,405 INFO L93 Difference]: Finished difference Result 3676 states and 12141 transitions. [2022-11-26 00:28:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:28:29,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:29,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:29,420 INFO L225 Difference]: With dead ends: 3676 [2022-11-26 00:28:29,420 INFO L226 Difference]: Without dead ends: 3632 [2022-11-26 00:28:29,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:29,421 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:29,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2022-11-26 00:28:29,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 2460. [2022-11-26 00:28:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2459 states have (on average 3.354209028060187) internal successors, (8248), 2459 states have internal predecessors, (8248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 8248 transitions. [2022-11-26 00:28:29,570 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 8248 transitions. Word has length 32 [2022-11-26 00:28:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:29,571 INFO L495 AbstractCegarLoop]: Abstraction has 2460 states and 8248 transitions. [2022-11-26 00:28:29,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 8248 transitions. [2022-11-26 00:28:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:29,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:29,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:29,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 00:28:29,580 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:29,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash 721065756, now seen corresponding path program 8 times [2022-11-26 00:28:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:29,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473234584] [2022-11-26 00:28:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:29,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:29,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:29,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473234584] [2022-11-26 00:28:29,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473234584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:29,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:29,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:29,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910692385] [2022-11-26 00:28:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:29,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:29,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:29,864 INFO L87 Difference]: Start difference. First operand 2460 states and 8248 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:30,100 INFO L93 Difference]: Finished difference Result 2576 states and 8500 transitions. [2022-11-26 00:28:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:28:30,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:30,110 INFO L225 Difference]: With dead ends: 2576 [2022-11-26 00:28:30,111 INFO L226 Difference]: Without dead ends: 2516 [2022-11-26 00:28:30,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:30,112 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:30,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2022-11-26 00:28:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 2398. [2022-11-26 00:28:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 3.326241134751773) internal successors, (7973), 2397 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:30,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 7973 transitions. [2022-11-26 00:28:30,186 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 7973 transitions. Word has length 32 [2022-11-26 00:28:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:30,186 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 7973 transitions. [2022-11-26 00:28:30,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 7973 transitions. [2022-11-26 00:28:30,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:30,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:30,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:30,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 00:28:30,194 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:30,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1698505710, now seen corresponding path program 9 times [2022-11-26 00:28:30,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:30,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114856574] [2022-11-26 00:28:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:30,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:30,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:30,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114856574] [2022-11-26 00:28:30,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114856574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:30,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:30,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:30,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95767061] [2022-11-26 00:28:30,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:30,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:28:30,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:30,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:28:30,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:28:30,511 INFO L87 Difference]: Start difference. First operand 2398 states and 7973 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:30,740 INFO L93 Difference]: Finished difference Result 2430 states and 7981 transitions. [2022-11-26 00:28:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:28:30,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:30,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:30,751 INFO L225 Difference]: With dead ends: 2430 [2022-11-26 00:28:30,751 INFO L226 Difference]: Without dead ends: 2378 [2022-11-26 00:28:30,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:30,752 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:30,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-11-26 00:28:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2312. [2022-11-26 00:28:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2311 states have (on average 3.3137170056252705) internal successors, (7658), 2311 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 7658 transitions. [2022-11-26 00:28:30,850 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 7658 transitions. Word has length 32 [2022-11-26 00:28:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:30,850 INFO L495 AbstractCegarLoop]: Abstraction has 2312 states and 7658 transitions. [2022-11-26 00:28:30,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 7658 transitions. [2022-11-26 00:28:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:30,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:30,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:30,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-26 00:28:30,858 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash 933120126, now seen corresponding path program 10 times [2022-11-26 00:28:30,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:30,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647771520] [2022-11-26 00:28:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:30,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:31,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:31,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647771520] [2022-11-26 00:28:31,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647771520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:31,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:31,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:28:31,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462783674] [2022-11-26 00:28:31,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:31,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:28:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:28:31,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:31,251 INFO L87 Difference]: Start difference. First operand 2312 states and 7658 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:31,571 INFO L93 Difference]: Finished difference Result 3522 states and 11278 transitions. [2022-11-26 00:28:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:28:31,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:31,586 INFO L225 Difference]: With dead ends: 3522 [2022-11-26 00:28:31,587 INFO L226 Difference]: Without dead ends: 3498 [2022-11-26 00:28:31,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:31,587 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:31,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2022-11-26 00:28:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2656. [2022-11-26 00:28:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2655 states have (on average 3.2741996233521657) internal successors, (8693), 2655 states have internal predecessors, (8693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 8693 transitions. [2022-11-26 00:28:31,681 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 8693 transitions. Word has length 32 [2022-11-26 00:28:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:31,683 INFO L495 AbstractCegarLoop]: Abstraction has 2656 states and 8693 transitions. [2022-11-26 00:28:31,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 8693 transitions. [2022-11-26 00:28:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:31,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:31,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:31,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-26 00:28:31,692 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2110876710, now seen corresponding path program 11 times [2022-11-26 00:28:31,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:31,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934870494] [2022-11-26 00:28:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:31,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:32,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:32,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934870494] [2022-11-26 00:28:32,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934870494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:32,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:32,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:28:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500905885] [2022-11-26 00:28:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:32,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:28:32,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:28:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:32,148 INFO L87 Difference]: Start difference. First operand 2656 states and 8693 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:32,710 INFO L93 Difference]: Finished difference Result 3424 states and 10850 transitions. [2022-11-26 00:28:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:28:32,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:32,723 INFO L225 Difference]: With dead ends: 3424 [2022-11-26 00:28:32,723 INFO L226 Difference]: Without dead ends: 3412 [2022-11-26 00:28:32,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:28:32,724 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:32,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:28:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2022-11-26 00:28:32,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 2592. [2022-11-26 00:28:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2591 states have (on average 3.2732535700501737) internal successors, (8481), 2591 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 8481 transitions. [2022-11-26 00:28:32,810 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 8481 transitions. Word has length 32 [2022-11-26 00:28:32,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:32,810 INFO L495 AbstractCegarLoop]: Abstraction has 2592 states and 8481 transitions. [2022-11-26 00:28:32,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 8481 transitions. [2022-11-26 00:28:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:32,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:32,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:32,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-26 00:28:32,819 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:32,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:32,819 INFO L85 PathProgramCache]: Analyzing trace with hash -854744880, now seen corresponding path program 12 times [2022-11-26 00:28:32,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:32,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126313435] [2022-11-26 00:28:32,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:32,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:33,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:33,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126313435] [2022-11-26 00:28:33,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126313435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:33,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:33,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:28:33,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731436074] [2022-11-26 00:28:33,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:33,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:28:33,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:33,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:28:33,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:33,131 INFO L87 Difference]: Start difference. First operand 2592 states and 8481 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:33,591 INFO L93 Difference]: Finished difference Result 3870 states and 12120 transitions. [2022-11-26 00:28:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:28:33,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:33,609 INFO L225 Difference]: With dead ends: 3870 [2022-11-26 00:28:33,609 INFO L226 Difference]: Without dead ends: 3814 [2022-11-26 00:28:33,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:33,610 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 78 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:33,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 0 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2022-11-26 00:28:33,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 2496. [2022-11-26 00:28:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 3.274949899799599) internal successors, (8171), 2495 states have internal predecessors, (8171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 8171 transitions. [2022-11-26 00:28:33,746 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 8171 transitions. Word has length 32 [2022-11-26 00:28:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:33,746 INFO L495 AbstractCegarLoop]: Abstraction has 2496 states and 8171 transitions. [2022-11-26 00:28:33,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 8171 transitions. [2022-11-26 00:28:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:33,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:33,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-26 00:28:33,755 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 587073330, now seen corresponding path program 13 times [2022-11-26 00:28:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:33,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925999634] [2022-11-26 00:28:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:33,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:34,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:34,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925999634] [2022-11-26 00:28:34,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925999634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:34,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:34,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:28:34,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702816859] [2022-11-26 00:28:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:34,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:28:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:28:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:34,062 INFO L87 Difference]: Start difference. First operand 2496 states and 8171 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:34,358 INFO L93 Difference]: Finished difference Result 3538 states and 11223 transitions. [2022-11-26 00:28:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:28:34,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:34,373 INFO L225 Difference]: With dead ends: 3538 [2022-11-26 00:28:34,374 INFO L226 Difference]: Without dead ends: 3462 [2022-11-26 00:28:34,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:34,374 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:34,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-11-26 00:28:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 2530. [2022-11-26 00:28:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2529 states have (on average 3.2831158560695926) internal successors, (8303), 2529 states have internal predecessors, (8303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 8303 transitions. [2022-11-26 00:28:34,463 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 8303 transitions. Word has length 32 [2022-11-26 00:28:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:34,463 INFO L495 AbstractCegarLoop]: Abstraction has 2530 states and 8303 transitions. [2022-11-26 00:28:34,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 8303 transitions. [2022-11-26 00:28:34,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:34,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:34,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:34,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-26 00:28:34,472 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:34,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash 665542504, now seen corresponding path program 14 times [2022-11-26 00:28:34,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:34,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306519210] [2022-11-26 00:28:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:34,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:34,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:34,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306519210] [2022-11-26 00:28:34,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306519210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:34,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:34,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:28:34,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181270526] [2022-11-26 00:28:34,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:34,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:28:34,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:28:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:34,781 INFO L87 Difference]: Start difference. First operand 2530 states and 8303 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:35,194 INFO L93 Difference]: Finished difference Result 3758 states and 11651 transitions. [2022-11-26 00:28:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:28:35,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:35,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:35,209 INFO L225 Difference]: With dead ends: 3758 [2022-11-26 00:28:35,209 INFO L226 Difference]: Without dead ends: 3714 [2022-11-26 00:28:35,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:35,214 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:35,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2022-11-26 00:28:35,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 2688. [2022-11-26 00:28:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2688 states, 2687 states have (on average 3.2158541123930036) internal successors, (8641), 2687 states have internal predecessors, (8641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 8641 transitions. [2022-11-26 00:28:35,304 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 8641 transitions. Word has length 32 [2022-11-26 00:28:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:35,305 INFO L495 AbstractCegarLoop]: Abstraction has 2688 states and 8641 transitions. [2022-11-26 00:28:35,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 8641 transitions. [2022-11-26 00:28:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:35,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:35,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:35,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-26 00:28:35,314 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash -127706560, now seen corresponding path program 15 times [2022-11-26 00:28:35,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:35,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56863874] [2022-11-26 00:28:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:35,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:35,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:35,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56863874] [2022-11-26 00:28:35,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56863874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:35,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:35,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:28:35,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846505544] [2022-11-26 00:28:35,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:35,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:28:35,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:28:35,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:28:35,628 INFO L87 Difference]: Start difference. First operand 2688 states and 8641 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:35,917 INFO L93 Difference]: Finished difference Result 2830 states and 8347 transitions. [2022-11-26 00:28:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:28:35,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:35,929 INFO L225 Difference]: With dead ends: 2830 [2022-11-26 00:28:35,929 INFO L226 Difference]: Without dead ends: 2806 [2022-11-26 00:28:35,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:35,930 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:35,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-11-26 00:28:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2222. [2022-11-26 00:28:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 3.0306168392615938) internal successors, (6731), 2221 states have internal predecessors, (6731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 6731 transitions. [2022-11-26 00:28:36,003 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 6731 transitions. Word has length 32 [2022-11-26 00:28:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:36,003 INFO L495 AbstractCegarLoop]: Abstraction has 2222 states and 6731 transitions. [2022-11-26 00:28:36,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 6731 transitions. [2022-11-26 00:28:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:36,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:36,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:36,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-26 00:28:36,011 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1241881064, now seen corresponding path program 16 times [2022-11-26 00:28:36,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:36,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760628749] [2022-11-26 00:28:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:36,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:36,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:36,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760628749] [2022-11-26 00:28:36,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760628749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:36,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:36,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:28:36,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299692080] [2022-11-26 00:28:36,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:36,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:28:36,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:28:36,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:36,330 INFO L87 Difference]: Start difference. First operand 2222 states and 6731 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:36,841 INFO L93 Difference]: Finished difference Result 3292 states and 9512 transitions. [2022-11-26 00:28:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:28:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:36,854 INFO L225 Difference]: With dead ends: 3292 [2022-11-26 00:28:36,854 INFO L226 Difference]: Without dead ends: 3270 [2022-11-26 00:28:36,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:28:36,855 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:36,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:36,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-11-26 00:28:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2424. [2022-11-26 00:28:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2423 states have (on average 3.001650846058605) internal successors, (7273), 2423 states have internal predecessors, (7273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 7273 transitions. [2022-11-26 00:28:36,933 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 7273 transitions. Word has length 32 [2022-11-26 00:28:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:36,934 INFO L495 AbstractCegarLoop]: Abstraction has 2424 states and 7273 transitions. [2022-11-26 00:28:36,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 7273 transitions. [2022-11-26 00:28:36,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:36,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:36,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:36,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-26 00:28:36,944 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:36,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:36,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2140173224, now seen corresponding path program 17 times [2022-11-26 00:28:36,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:36,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521219929] [2022-11-26 00:28:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:36,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:37,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:37,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521219929] [2022-11-26 00:28:37,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521219929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:37,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:37,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:28:37,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008583948] [2022-11-26 00:28:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:37,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:28:37,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:28:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:37,263 INFO L87 Difference]: Start difference. First operand 2424 states and 7273 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:37,743 INFO L93 Difference]: Finished difference Result 3618 states and 10175 transitions. [2022-11-26 00:28:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:28:37,744 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:37,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:37,755 INFO L225 Difference]: With dead ends: 3618 [2022-11-26 00:28:37,755 INFO L226 Difference]: Without dead ends: 3440 [2022-11-26 00:28:37,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:28:37,756 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:37,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:37,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2022-11-26 00:28:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 2518. [2022-11-26 00:28:37,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2517 states have (on average 2.911005164878824) internal successors, (7327), 2517 states have internal predecessors, (7327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 7327 transitions. [2022-11-26 00:28:37,831 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 7327 transitions. Word has length 32 [2022-11-26 00:28:37,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:37,831 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 7327 transitions. [2022-11-26 00:28:37,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:37,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 7327 transitions. [2022-11-26 00:28:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:37,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:37,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-26 00:28:37,838 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1531222744, now seen corresponding path program 18 times [2022-11-26 00:28:37,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:37,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513380580] [2022-11-26 00:28:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:38,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:38,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513380580] [2022-11-26 00:28:38,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513380580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:38,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:38,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:28:38,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840328005] [2022-11-26 00:28:38,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:38,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:28:38,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:28:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:38,209 INFO L87 Difference]: Start difference. First operand 2518 states and 7327 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:38,747 INFO L93 Difference]: Finished difference Result 3482 states and 9363 transitions. [2022-11-26 00:28:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:28:38,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:38,760 INFO L225 Difference]: With dead ends: 3482 [2022-11-26 00:28:38,760 INFO L226 Difference]: Without dead ends: 3320 [2022-11-26 00:28:38,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:28:38,761 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:38,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2022-11-26 00:28:38,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 2508. [2022-11-26 00:28:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2507 states have (on average 2.7873952931790984) internal successors, (6988), 2507 states have internal predecessors, (6988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 6988 transitions. [2022-11-26 00:28:38,840 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 6988 transitions. Word has length 32 [2022-11-26 00:28:38,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:38,841 INFO L495 AbstractCegarLoop]: Abstraction has 2508 states and 6988 transitions. [2022-11-26 00:28:38,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 6988 transitions. [2022-11-26 00:28:38,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:38,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:38,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:38,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-26 00:28:38,847 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:38,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash -339008506, now seen corresponding path program 19 times [2022-11-26 00:28:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:38,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864708606] [2022-11-26 00:28:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:38,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:39,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:39,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864708606] [2022-11-26 00:28:39,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864708606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:39,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:39,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:28:39,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056245292] [2022-11-26 00:28:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:39,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:28:39,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:39,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:28:39,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:39,142 INFO L87 Difference]: Start difference. First operand 2508 states and 6988 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:39,672 INFO L93 Difference]: Finished difference Result 3264 states and 8726 transitions. [2022-11-26 00:28:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:28:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:39,683 INFO L225 Difference]: With dead ends: 3264 [2022-11-26 00:28:39,683 INFO L226 Difference]: Without dead ends: 3244 [2022-11-26 00:28:39,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:28:39,684 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:39,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2022-11-26 00:28:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2494. [2022-11-26 00:28:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2493 states have (on average 2.7757721620537503) internal successors, (6920), 2493 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 6920 transitions. [2022-11-26 00:28:39,757 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 6920 transitions. Word has length 32 [2022-11-26 00:28:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:39,757 INFO L495 AbstractCegarLoop]: Abstraction has 2494 states and 6920 transitions. [2022-11-26 00:28:39,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 6920 transitions. [2022-11-26 00:28:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:39,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:39,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-26 00:28:39,763 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash 237330054, now seen corresponding path program 20 times [2022-11-26 00:28:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:39,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339676904] [2022-11-26 00:28:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:39,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:40,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:40,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339676904] [2022-11-26 00:28:40,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339676904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:40,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:40,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:28:40,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567739168] [2022-11-26 00:28:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:40,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:28:40,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:40,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:28:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:40,140 INFO L87 Difference]: Start difference. First operand 2494 states and 6920 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:40,761 INFO L93 Difference]: Finished difference Result 3196 states and 8531 transitions. [2022-11-26 00:28:40,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:28:40,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:40,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:40,772 INFO L225 Difference]: With dead ends: 3196 [2022-11-26 00:28:40,772 INFO L226 Difference]: Without dead ends: 3154 [2022-11-26 00:28:40,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:28:40,774 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:40,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:28:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2022-11-26 00:28:40,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 2416. [2022-11-26 00:28:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2415 states have (on average 2.760248447204969) internal successors, (6666), 2415 states have internal predecessors, (6666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 6666 transitions. [2022-11-26 00:28:40,840 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 6666 transitions. Word has length 32 [2022-11-26 00:28:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:40,840 INFO L495 AbstractCegarLoop]: Abstraction has 2416 states and 6666 transitions. [2022-11-26 00:28:40,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 6666 transitions. [2022-11-26 00:28:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:40,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:40,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:40,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-26 00:28:40,846 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:40,847 INFO L85 PathProgramCache]: Analyzing trace with hash 658526192, now seen corresponding path program 21 times [2022-11-26 00:28:40,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:40,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288185011] [2022-11-26 00:28:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:41,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:41,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288185011] [2022-11-26 00:28:41,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288185011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:41,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:41,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:41,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549565705] [2022-11-26 00:28:41,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:41,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:41,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:41,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:41,189 INFO L87 Difference]: Start difference. First operand 2416 states and 6666 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:41,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:41,950 INFO L93 Difference]: Finished difference Result 3198 states and 8469 transitions. [2022-11-26 00:28:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:28:41,950 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:41,962 INFO L225 Difference]: With dead ends: 3198 [2022-11-26 00:28:41,962 INFO L226 Difference]: Without dead ends: 3146 [2022-11-26 00:28:41,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:28:41,963 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 125 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:41,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 0 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:28:41,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2022-11-26 00:28:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 2522. [2022-11-26 00:28:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2521 states have (on average 2.7409758032526774) internal successors, (6910), 2521 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 6910 transitions. [2022-11-26 00:28:42,036 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 6910 transitions. Word has length 32 [2022-11-26 00:28:42,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:42,036 INFO L495 AbstractCegarLoop]: Abstraction has 2522 states and 6910 transitions. [2022-11-26 00:28:42,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 6910 transitions. [2022-11-26 00:28:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:42,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:42,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:42,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-26 00:28:42,043 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:42,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:42,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1952501062, now seen corresponding path program 22 times [2022-11-26 00:28:42,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:42,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653889388] [2022-11-26 00:28:42,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:42,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:42,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:42,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653889388] [2022-11-26 00:28:42,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653889388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:42,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:42,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:28:42,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850023377] [2022-11-26 00:28:42,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:42,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:28:42,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:42,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:28:42,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:42,357 INFO L87 Difference]: Start difference. First operand 2522 states and 6910 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:42,971 INFO L93 Difference]: Finished difference Result 3308 states and 8707 transitions. [2022-11-26 00:28:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:28:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:42,981 INFO L225 Difference]: With dead ends: 3308 [2022-11-26 00:28:42,982 INFO L226 Difference]: Without dead ends: 3174 [2022-11-26 00:28:42,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:28:42,983 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:42,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:28:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2022-11-26 00:28:43,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2418. [2022-11-26 00:28:43,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2417 states have (on average 2.6822507240380635) internal successors, (6483), 2417 states have internal predecessors, (6483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 6483 transitions. [2022-11-26 00:28:43,053 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 6483 transitions. Word has length 32 [2022-11-26 00:28:43,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:43,054 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 6483 transitions. [2022-11-26 00:28:43,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 6483 transitions. [2022-11-26 00:28:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:43,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:43,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:43,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-26 00:28:43,060 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1105941632, now seen corresponding path program 23 times [2022-11-26 00:28:43,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:43,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961362730] [2022-11-26 00:28:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:43,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:43,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:43,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961362730] [2022-11-26 00:28:43,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961362730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:43,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:43,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:43,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766984583] [2022-11-26 00:28:43,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:43,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:43,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:43,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:43,383 INFO L87 Difference]: Start difference. First operand 2418 states and 6483 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:44,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:44,084 INFO L93 Difference]: Finished difference Result 3280 states and 8487 transitions. [2022-11-26 00:28:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:28:44,085 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:44,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:44,092 INFO L225 Difference]: With dead ends: 3280 [2022-11-26 00:28:44,093 INFO L226 Difference]: Without dead ends: 3100 [2022-11-26 00:28:44,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:28:44,093 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 155 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:44,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 0 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:28:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2022-11-26 00:28:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2426. [2022-11-26 00:28:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 2425 states have (on average 2.671752577319588) internal successors, (6479), 2425 states have internal predecessors, (6479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 6479 transitions. [2022-11-26 00:28:44,194 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 6479 transitions. Word has length 32 [2022-11-26 00:28:44,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:44,194 INFO L495 AbstractCegarLoop]: Abstraction has 2426 states and 6479 transitions. [2022-11-26 00:28:44,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:44,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 6479 transitions. [2022-11-26 00:28:44,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:44,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:44,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:44,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-26 00:28:44,200 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:44,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:44,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1479653692, now seen corresponding path program 24 times [2022-11-26 00:28:44,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:44,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589194292] [2022-11-26 00:28:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:44,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:44,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:44,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589194292] [2022-11-26 00:28:44,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589194292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:44,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:44,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:28:44,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590472483] [2022-11-26 00:28:44,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:44,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:28:44,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:44,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:28:44,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:44,500 INFO L87 Difference]: Start difference. First operand 2426 states and 6479 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:45,154 INFO L93 Difference]: Finished difference Result 3234 states and 8323 transitions. [2022-11-26 00:28:45,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:28:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:45,165 INFO L225 Difference]: With dead ends: 3234 [2022-11-26 00:28:45,165 INFO L226 Difference]: Without dead ends: 3138 [2022-11-26 00:28:45,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:28:45,166 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:45,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 0 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:28:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-11-26 00:28:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2268. [2022-11-26 00:28:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 2267 states have (on average 2.647551830613145) internal successors, (6002), 2267 states have internal predecessors, (6002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 6002 transitions. [2022-11-26 00:28:45,237 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 6002 transitions. Word has length 32 [2022-11-26 00:28:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:45,237 INFO L495 AbstractCegarLoop]: Abstraction has 2268 states and 6002 transitions. [2022-11-26 00:28:45,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 6002 transitions. [2022-11-26 00:28:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:45,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:45,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:45,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-26 00:28:45,243 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:45,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:45,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1267717072, now seen corresponding path program 25 times [2022-11-26 00:28:45,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:45,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896079467] [2022-11-26 00:28:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:45,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:45,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:45,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896079467] [2022-11-26 00:28:45,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896079467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:45,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:45,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:45,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408148971] [2022-11-26 00:28:45,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:45,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:45,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:45,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:45,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:45,541 INFO L87 Difference]: Start difference. First operand 2268 states and 6002 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:46,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:46,352 INFO L93 Difference]: Finished difference Result 3108 states and 7904 transitions. [2022-11-26 00:28:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:28:46,352 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:46,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:46,359 INFO L225 Difference]: With dead ends: 3108 [2022-11-26 00:28:46,359 INFO L226 Difference]: Without dead ends: 2984 [2022-11-26 00:28:46,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:28:46,360 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 142 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:46,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 0 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:28:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2022-11-26 00:28:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2252. [2022-11-26 00:28:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2251 states have (on average 2.645490892936473) internal successors, (5955), 2251 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 5955 transitions. [2022-11-26 00:28:46,465 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 5955 transitions. Word has length 32 [2022-11-26 00:28:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:46,466 INFO L495 AbstractCegarLoop]: Abstraction has 2252 states and 5955 transitions. [2022-11-26 00:28:46,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 5955 transitions. [2022-11-26 00:28:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:46,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:46,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:46,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-26 00:28:46,472 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2063962880, now seen corresponding path program 26 times [2022-11-26 00:28:46,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:46,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175354404] [2022-11-26 00:28:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:46,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:46,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:46,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175354404] [2022-11-26 00:28:46,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175354404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:46,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:46,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:28:46,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406152316] [2022-11-26 00:28:46,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:46,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:28:46,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:46,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:28:46,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:46,809 INFO L87 Difference]: Start difference. First operand 2252 states and 5955 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:47,215 INFO L93 Difference]: Finished difference Result 3406 states and 8502 transitions. [2022-11-26 00:28:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:28:47,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:47,222 INFO L225 Difference]: With dead ends: 3406 [2022-11-26 00:28:47,223 INFO L226 Difference]: Without dead ends: 3236 [2022-11-26 00:28:47,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:47,223 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 82 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:47,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2022-11-26 00:28:47,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2202. [2022-11-26 00:28:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2201 states have (on average 2.6042707860063605) internal successors, (5732), 2201 states have internal predecessors, (5732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 5732 transitions. [2022-11-26 00:28:47,287 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 5732 transitions. Word has length 32 [2022-11-26 00:28:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:47,287 INFO L495 AbstractCegarLoop]: Abstraction has 2202 states and 5732 transitions. [2022-11-26 00:28:47,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 5732 transitions. [2022-11-26 00:28:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:47,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:47,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-26 00:28:47,297 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash 522970112, now seen corresponding path program 27 times [2022-11-26 00:28:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:47,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489706448] [2022-11-26 00:28:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:47,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:47,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489706448] [2022-11-26 00:28:47,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489706448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:47,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:47,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:28:47,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941065556] [2022-11-26 00:28:47,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:47,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:28:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:47,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:28:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:47,562 INFO L87 Difference]: Start difference. First operand 2202 states and 5732 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:48,059 INFO L93 Difference]: Finished difference Result 3084 states and 7301 transitions. [2022-11-26 00:28:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:28:48,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:48,065 INFO L225 Difference]: With dead ends: 3084 [2022-11-26 00:28:48,065 INFO L226 Difference]: Without dead ends: 2852 [2022-11-26 00:28:48,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:28:48,066 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 107 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:48,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 0 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2022-11-26 00:28:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1974. [2022-11-26 00:28:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 2.5063355296502787) internal successors, (4945), 1973 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 4945 transitions. [2022-11-26 00:28:48,118 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 4945 transitions. Word has length 32 [2022-11-26 00:28:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:48,118 INFO L495 AbstractCegarLoop]: Abstraction has 1974 states and 4945 transitions. [2022-11-26 00:28:48,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 4945 transitions. [2022-11-26 00:28:48,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:48,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:48,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:48,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-26 00:28:48,123 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash 797402102, now seen corresponding path program 28 times [2022-11-26 00:28:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:48,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048918961] [2022-11-26 00:28:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:48,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:48,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:48,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048918961] [2022-11-26 00:28:48,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048918961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:48,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:48,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:28:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650109511] [2022-11-26 00:28:48,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:48,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:28:48,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:28:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:28:48,404 INFO L87 Difference]: Start difference. First operand 1974 states and 4945 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:48,948 INFO L93 Difference]: Finished difference Result 2714 states and 6428 transitions. [2022-11-26 00:28:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:28:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:48,954 INFO L225 Difference]: With dead ends: 2714 [2022-11-26 00:28:48,955 INFO L226 Difference]: Without dead ends: 2656 [2022-11-26 00:28:48,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:28:48,955 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 93 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:48,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 0 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2022-11-26 00:28:49,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 1942. [2022-11-26 00:28:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 2.48634724368882) internal successors, (4826), 1941 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 4826 transitions. [2022-11-26 00:28:49,010 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 4826 transitions. Word has length 32 [2022-11-26 00:28:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:49,011 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 4826 transitions. [2022-11-26 00:28:49,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 4826 transitions. [2022-11-26 00:28:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:49,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:49,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:49,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-26 00:28:49,016 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1034435480, now seen corresponding path program 29 times [2022-11-26 00:28:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:49,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622791395] [2022-11-26 00:28:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:49,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:49,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:49,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622791395] [2022-11-26 00:28:49,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622791395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:49,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:49,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:28:49,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103141923] [2022-11-26 00:28:49,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:49,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:28:49,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:28:49,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:28:49,319 INFO L87 Difference]: Start difference. First operand 1942 states and 4826 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:49,904 INFO L93 Difference]: Finished difference Result 2596 states and 6095 transitions. [2022-11-26 00:28:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:28:49,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:49,909 INFO L225 Difference]: With dead ends: 2596 [2022-11-26 00:28:49,909 INFO L226 Difference]: Without dead ends: 2490 [2022-11-26 00:28:49,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:28:49,910 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:49,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:28:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2022-11-26 00:28:49,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1848. [2022-11-26 00:28:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 2.4677855982674606) internal successors, (4558), 1847 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 4558 transitions. [2022-11-26 00:28:49,958 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 4558 transitions. Word has length 32 [2022-11-26 00:28:49,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:49,959 INFO L495 AbstractCegarLoop]: Abstraction has 1848 states and 4558 transitions. [2022-11-26 00:28:49,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 4558 transitions. [2022-11-26 00:28:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:49,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:49,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-26 00:28:49,963 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -212439946, now seen corresponding path program 30 times [2022-11-26 00:28:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:49,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899117336] [2022-11-26 00:28:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:49,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:50,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:50,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899117336] [2022-11-26 00:28:50,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899117336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:50,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:50,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:50,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946844436] [2022-11-26 00:28:50,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:50,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:50,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:50,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:50,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:50,261 INFO L87 Difference]: Start difference. First operand 1848 states and 4558 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:51,042 INFO L93 Difference]: Finished difference Result 2472 states and 5747 transitions. [2022-11-26 00:28:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:28:51,043 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:51,047 INFO L225 Difference]: With dead ends: 2472 [2022-11-26 00:28:51,047 INFO L226 Difference]: Without dead ends: 2312 [2022-11-26 00:28:51,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:28:51,048 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 137 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:51,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 0 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:28:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2022-11-26 00:28:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1744. [2022-11-26 00:28:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1743 states have (on average 2.4727481353987377) internal successors, (4310), 1743 states have internal predecessors, (4310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 4310 transitions. [2022-11-26 00:28:51,090 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 4310 transitions. Word has length 32 [2022-11-26 00:28:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:51,090 INFO L495 AbstractCegarLoop]: Abstraction has 1744 states and 4310 transitions. [2022-11-26 00:28:51,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 4310 transitions. [2022-11-26 00:28:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:51,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:51,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:51,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-26 00:28:51,094 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash -663598630, now seen corresponding path program 31 times [2022-11-26 00:28:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:51,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922714321] [2022-11-26 00:28:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:51,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:51,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:51,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922714321] [2022-11-26 00:28:51,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922714321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:51,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:51,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:51,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780345035] [2022-11-26 00:28:51,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:51,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:51,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:51,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:51,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:51,433 INFO L87 Difference]: Start difference. First operand 1744 states and 4310 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:51,953 INFO L93 Difference]: Finished difference Result 3090 states and 7318 transitions. [2022-11-26 00:28:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:28:51,954 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:51,959 INFO L225 Difference]: With dead ends: 3090 [2022-11-26 00:28:51,959 INFO L226 Difference]: Without dead ends: 3078 [2022-11-26 00:28:51,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:28:51,960 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:51,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:51,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2022-11-26 00:28:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 1752. [2022-11-26 00:28:52,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.4671616219303254) internal successors, (4320), 1751 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 4320 transitions. [2022-11-26 00:28:52,034 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 4320 transitions. Word has length 32 [2022-11-26 00:28:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:52,035 INFO L495 AbstractCegarLoop]: Abstraction has 1752 states and 4320 transitions. [2022-11-26 00:28:52,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 4320 transitions. [2022-11-26 00:28:52,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:52,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:52,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:52,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-26 00:28:52,039 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash -87260070, now seen corresponding path program 32 times [2022-11-26 00:28:52,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:52,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493853039] [2022-11-26 00:28:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:52,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:52,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493853039] [2022-11-26 00:28:52,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493853039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:52,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:52,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644341581] [2022-11-26 00:28:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:52,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:52,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:52,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:52,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:52,358 INFO L87 Difference]: Start difference. First operand 1752 states and 4320 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:52,786 INFO L93 Difference]: Finished difference Result 1824 states and 4446 transitions. [2022-11-26 00:28:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:28:52,787 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:52,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:52,790 INFO L225 Difference]: With dead ends: 1824 [2022-11-26 00:28:52,790 INFO L226 Difference]: Without dead ends: 1808 [2022-11-26 00:28:52,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:28:52,793 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:52,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-11-26 00:28:52,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1744. [2022-11-26 00:28:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1743 states have (on average 2.46815834767642) internal successors, (4302), 1743 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 4302 transitions. [2022-11-26 00:28:52,834 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 4302 transitions. Word has length 32 [2022-11-26 00:28:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:52,836 INFO L495 AbstractCegarLoop]: Abstraction has 1744 states and 4302 transitions. [2022-11-26 00:28:52,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:52,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 4302 transitions. [2022-11-26 00:28:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:52,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:52,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:52,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-26 00:28:52,843 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash 333936068, now seen corresponding path program 33 times [2022-11-26 00:28:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:52,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439296131] [2022-11-26 00:28:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:52,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:53,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:53,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439296131] [2022-11-26 00:28:53,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439296131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:53,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:53,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371419602] [2022-11-26 00:28:53,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:53,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:53,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:53,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:53,182 INFO L87 Difference]: Start difference. First operand 1744 states and 4302 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:53,629 INFO L93 Difference]: Finished difference Result 1764 states and 4334 transitions. [2022-11-26 00:28:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:28:53,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:53,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:53,633 INFO L225 Difference]: With dead ends: 1764 [2022-11-26 00:28:53,633 INFO L226 Difference]: Without dead ends: 1744 [2022-11-26 00:28:53,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:28:53,633 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:53,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-11-26 00:28:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1736. [2022-11-26 00:28:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1735 states have (on average 2.469164265129683) internal successors, (4284), 1735 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 4284 transitions. [2022-11-26 00:28:53,690 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 4284 transitions. Word has length 32 [2022-11-26 00:28:53,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:53,690 INFO L495 AbstractCegarLoop]: Abstraction has 1736 states and 4284 transitions. [2022-11-26 00:28:53,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 4284 transitions. [2022-11-26 00:28:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:53,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:53,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:53,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-26 00:28:53,694 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1888087960, now seen corresponding path program 34 times [2022-11-26 00:28:53,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:53,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691010442] [2022-11-26 00:28:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:53,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:54,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:54,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691010442] [2022-11-26 00:28:54,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691010442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:54,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:54,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:54,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441521365] [2022-11-26 00:28:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:54,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:54,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:54,048 INFO L87 Difference]: Start difference. First operand 1736 states and 4284 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:54,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:54,504 INFO L93 Difference]: Finished difference Result 1760 states and 4322 transitions. [2022-11-26 00:28:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:28:54,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:54,508 INFO L225 Difference]: With dead ends: 1760 [2022-11-26 00:28:54,508 INFO L226 Difference]: Without dead ends: 1736 [2022-11-26 00:28:54,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:28:54,509 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:54,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2022-11-26 00:28:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1728. [2022-11-26 00:28:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 2.4701795020266357) internal successors, (4266), 1727 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 4266 transitions. [2022-11-26 00:28:54,550 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 4266 transitions. Word has length 32 [2022-11-26 00:28:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:54,551 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 4266 transitions. [2022-11-26 00:28:54,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 4266 transitions. [2022-11-26 00:28:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:54,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:54,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:54,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-26 00:28:54,555 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:54,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:54,556 INFO L85 PathProgramCache]: Analyzing trace with hash -564313846, now seen corresponding path program 35 times [2022-11-26 00:28:54,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:54,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165137330] [2022-11-26 00:28:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:54,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:54,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165137330] [2022-11-26 00:28:54,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165137330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:54,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:54,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996938046] [2022-11-26 00:28:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:54,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:54,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:54,888 INFO L87 Difference]: Start difference. First operand 1728 states and 4266 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:55,255 INFO L93 Difference]: Finished difference Result 1818 states and 4415 transitions. [2022-11-26 00:28:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:28:55,256 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:55,260 INFO L225 Difference]: With dead ends: 1818 [2022-11-26 00:28:55,260 INFO L226 Difference]: Without dead ends: 1800 [2022-11-26 00:28:55,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:28:55,263 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:55,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2022-11-26 00:28:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1740. [2022-11-26 00:28:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1739 states have (on average 2.4634847613571016) internal successors, (4284), 1739 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 4284 transitions. [2022-11-26 00:28:55,310 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 4284 transitions. Word has length 32 [2022-11-26 00:28:55,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:55,310 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 4284 transitions. [2022-11-26 00:28:55,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 4284 transitions. [2022-11-26 00:28:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:55,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:55,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:55,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-26 00:28:55,315 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:55,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1395430890, now seen corresponding path program 36 times [2022-11-26 00:28:55,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:55,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964117054] [2022-11-26 00:28:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:55,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:55,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:55,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964117054] [2022-11-26 00:28:55,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964117054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:55,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:55,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:55,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422455187] [2022-11-26 00:28:55,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:55,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:55,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:55,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:55,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:55,630 INFO L87 Difference]: Start difference. First operand 1740 states and 4284 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:56,104 INFO L93 Difference]: Finished difference Result 3070 states and 7306 transitions. [2022-11-26 00:28:56,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:28:56,105 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:56,110 INFO L225 Difference]: With dead ends: 3070 [2022-11-26 00:28:56,110 INFO L226 Difference]: Without dead ends: 3046 [2022-11-26 00:28:56,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:28:56,111 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:56,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:56,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-11-26 00:28:56,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 1728. [2022-11-26 00:28:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 2.4632310364794443) internal successors, (4254), 1727 states have internal predecessors, (4254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 4254 transitions. [2022-11-26 00:28:56,162 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 4254 transitions. Word has length 32 [2022-11-26 00:28:56,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:56,162 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 4254 transitions. [2022-11-26 00:28:56,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 4254 transitions. [2022-11-26 00:28:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:56,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:56,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:56,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-26 00:28:56,166 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash 672210756, now seen corresponding path program 37 times [2022-11-26 00:28:56,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:56,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143825826] [2022-11-26 00:28:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:56,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:56,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:56,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143825826] [2022-11-26 00:28:56,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143825826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:56,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:56,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:56,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984697238] [2022-11-26 00:28:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:56,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:56,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:56,467 INFO L87 Difference]: Start difference. First operand 1728 states and 4254 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:56,773 INFO L93 Difference]: Finished difference Result 1778 states and 4331 transitions. [2022-11-26 00:28:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:28:56,773 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:56,776 INFO L225 Difference]: With dead ends: 1778 [2022-11-26 00:28:56,776 INFO L226 Difference]: Without dead ends: 1736 [2022-11-26 00:28:56,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:28:56,777 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:56,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:56,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2022-11-26 00:28:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1716. [2022-11-26 00:28:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1715 states have (on average 2.4629737609329445) internal successors, (4224), 1715 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 4224 transitions. [2022-11-26 00:28:56,812 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 4224 transitions. Word has length 32 [2022-11-26 00:28:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:56,812 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 4224 transitions. [2022-11-26 00:28:56,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 4224 transitions. [2022-11-26 00:28:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:56,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:56,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:56,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-26 00:28:56,816 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1270807032, now seen corresponding path program 38 times [2022-11-26 00:28:56,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:56,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213364511] [2022-11-26 00:28:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:56,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:57,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:57,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213364511] [2022-11-26 00:28:57,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213364511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:57,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:57,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:57,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743329208] [2022-11-26 00:28:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:57,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:57,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:57,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:57,158 INFO L87 Difference]: Start difference. First operand 1716 states and 4224 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:57,486 INFO L93 Difference]: Finished difference Result 1766 states and 4301 transitions. [2022-11-26 00:28:57,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:28:57,486 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:57,490 INFO L225 Difference]: With dead ends: 1766 [2022-11-26 00:28:57,490 INFO L226 Difference]: Without dead ends: 1704 [2022-11-26 00:28:57,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:28:57,491 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:57,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2022-11-26 00:28:57,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1688. [2022-11-26 00:28:57,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1687 states have (on average 2.4706579727326616) internal successors, (4168), 1687 states have internal predecessors, (4168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:57,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 4168 transitions. [2022-11-26 00:28:57,524 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 4168 transitions. Word has length 32 [2022-11-26 00:28:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:57,525 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 4168 transitions. [2022-11-26 00:28:57,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 4168 transitions. [2022-11-26 00:28:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:57,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:57,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:57,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-26 00:28:57,528 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:57,529 INFO L85 PathProgramCache]: Analyzing trace with hash -213156198, now seen corresponding path program 39 times [2022-11-26 00:28:57,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:57,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721499390] [2022-11-26 00:28:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:57,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:57,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:57,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721499390] [2022-11-26 00:28:57,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721499390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:57,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:57,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:57,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159613056] [2022-11-26 00:28:57,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:57,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:57,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:57,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:57,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:57,942 INFO L87 Difference]: Start difference. First operand 1688 states and 4168 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:58,347 INFO L93 Difference]: Finished difference Result 1728 states and 4234 transitions. [2022-11-26 00:28:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:28:58,348 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:58,351 INFO L225 Difference]: With dead ends: 1728 [2022-11-26 00:28:58,351 INFO L226 Difference]: Without dead ends: 1720 [2022-11-26 00:28:58,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:28:58,351 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:58,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:28:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2022-11-26 00:28:58,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1692. [2022-11-26 00:28:58,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1691 states have (on average 2.46836191602602) internal successors, (4174), 1691 states have internal predecessors, (4174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 4174 transitions. [2022-11-26 00:28:58,383 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 4174 transitions. Word has length 32 [2022-11-26 00:28:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:58,383 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 4174 transitions. [2022-11-26 00:28:58,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 4174 transitions. [2022-11-26 00:28:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:58,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:58,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:58,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-26 00:28:58,387 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1643191038, now seen corresponding path program 40 times [2022-11-26 00:28:58,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:58,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933767657] [2022-11-26 00:28:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:58,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:58,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:58,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933767657] [2022-11-26 00:28:58,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933767657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:58,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:58,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092787859] [2022-11-26 00:28:58,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:58,709 INFO L87 Difference]: Start difference. First operand 1692 states and 4174 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:59,192 INFO L93 Difference]: Finished difference Result 2998 states and 7107 transitions. [2022-11-26 00:28:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:28:59,192 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:59,198 INFO L225 Difference]: With dead ends: 2998 [2022-11-26 00:28:59,198 INFO L226 Difference]: Without dead ends: 2986 [2022-11-26 00:28:59,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:28:59,199 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:59,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2022-11-26 00:28:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1688. [2022-11-26 00:28:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1687 states have (on average 2.4682868998221696) internal successors, (4164), 1687 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 4164 transitions. [2022-11-26 00:28:59,247 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 4164 transitions. Word has length 32 [2022-11-26 00:28:59,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:59,247 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 4164 transitions. [2022-11-26 00:28:59,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:59,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 4164 transitions. [2022-11-26 00:28:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:59,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:59,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:59,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-26 00:28:59,252 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1334440334, now seen corresponding path program 41 times [2022-11-26 00:28:59,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:59,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854659459] [2022-11-26 00:28:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:59,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:59,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:59,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854659459] [2022-11-26 00:28:59,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854659459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:59,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:59,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:28:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271381645] [2022-11-26 00:28:59,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:59,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:59,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:28:59,608 INFO L87 Difference]: Start difference. First operand 1688 states and 4164 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:59,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:59,950 INFO L93 Difference]: Finished difference Result 1704 states and 4186 transitions. [2022-11-26 00:28:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:28:59,950 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:28:59,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:59,953 INFO L225 Difference]: With dead ends: 1704 [2022-11-26 00:28:59,953 INFO L226 Difference]: Without dead ends: 1688 [2022-11-26 00:28:59,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:28:59,955 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:59,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:28:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2022-11-26 00:28:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1684. [2022-11-26 00:28:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 2.4682115270350566) internal successors, (4154), 1683 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 4154 transitions. [2022-11-26 00:28:59,989 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 4154 transitions. Word has length 32 [2022-11-26 00:28:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:59,989 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 4154 transitions. [2022-11-26 00:28:59,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 4154 transitions. [2022-11-26 00:28:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:28:59,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:59,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:59,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-26 00:28:59,993 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:28:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash 444717784, now seen corresponding path program 42 times [2022-11-26 00:28:59,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:59,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160022613] [2022-11-26 00:28:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:59,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:00,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:00,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160022613] [2022-11-26 00:29:00,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160022613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:00,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:00,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:00,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805474704] [2022-11-26 00:29:00,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:00,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:00,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:00,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:00,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:00,333 INFO L87 Difference]: Start difference. First operand 1684 states and 4154 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:00,697 INFO L93 Difference]: Finished difference Result 1692 states and 4164 transitions. [2022-11-26 00:29:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:29:00,697 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:00,700 INFO L225 Difference]: With dead ends: 1692 [2022-11-26 00:29:00,700 INFO L226 Difference]: Without dead ends: 1662 [2022-11-26 00:29:00,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:29:00,701 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:00,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-11-26 00:29:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1662. [2022-11-26 00:29:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 2.477423239012643) internal successors, (4115), 1661 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 4115 transitions. [2022-11-26 00:29:00,733 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 4115 transitions. Word has length 32 [2022-11-26 00:29:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:00,733 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 4115 transitions. [2022-11-26 00:29:00,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 4115 transitions. [2022-11-26 00:29:00,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:00,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:00,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:00,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-26 00:29:00,737 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:00,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:00,737 INFO L85 PathProgramCache]: Analyzing trace with hash -989842300, now seen corresponding path program 43 times [2022-11-26 00:29:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:00,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124603012] [2022-11-26 00:29:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:00,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:01,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:01,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124603012] [2022-11-26 00:29:01,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124603012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:01,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:01,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:01,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761806078] [2022-11-26 00:29:01,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:01,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:01,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:01,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:01,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:01,063 INFO L87 Difference]: Start difference. First operand 1662 states and 4115 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:01,492 INFO L93 Difference]: Finished difference Result 2960 states and 7032 transitions. [2022-11-26 00:29:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:01,492 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:01,497 INFO L225 Difference]: With dead ends: 2960 [2022-11-26 00:29:01,498 INFO L226 Difference]: Without dead ends: 2952 [2022-11-26 00:29:01,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:01,498 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:01,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:29:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-11-26 00:29:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1666. [2022-11-26 00:29:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 2.475075075075075) internal successors, (4121), 1665 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4121 transitions. [2022-11-26 00:29:01,543 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4121 transitions. Word has length 32 [2022-11-26 00:29:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:01,543 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 4121 transitions. [2022-11-26 00:29:01,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4121 transitions. [2022-11-26 00:29:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:01,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:01,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:01,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-26 00:29:01,547 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -752808922, now seen corresponding path program 44 times [2022-11-26 00:29:01,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:01,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858563622] [2022-11-26 00:29:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:01,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:01,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:01,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858563622] [2022-11-26 00:29:01,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858563622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:01,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:01,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:01,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355489977] [2022-11-26 00:29:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:01,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:01,842 INFO L87 Difference]: Start difference. First operand 1666 states and 4121 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:02,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:02,136 INFO L93 Difference]: Finished difference Result 1686 states and 4149 transitions. [2022-11-26 00:29:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:02,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:02,139 INFO L225 Difference]: With dead ends: 1686 [2022-11-26 00:29:02,139 INFO L226 Difference]: Without dead ends: 1674 [2022-11-26 00:29:02,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:29:02,140 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:02,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2022-11-26 00:29:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1662. [2022-11-26 00:29:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 2.4750150511739917) internal successors, (4111), 1661 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:02,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 4111 transitions. [2022-11-26 00:29:02,173 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 4111 transitions. Word has length 32 [2022-11-26 00:29:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:02,173 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 4111 transitions. [2022-11-26 00:29:02,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:02,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 4111 transitions. [2022-11-26 00:29:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:02,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:02,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:02,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-26 00:29:02,177 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:02,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1999684348, now seen corresponding path program 45 times [2022-11-26 00:29:02,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:02,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524817503] [2022-11-26 00:29:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:02,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:02,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:02,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524817503] [2022-11-26 00:29:02,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524817503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:02,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:02,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:02,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422316466] [2022-11-26 00:29:02,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:02,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:02,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:02,491 INFO L87 Difference]: Start difference. First operand 1662 states and 4111 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:02,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:02,763 INFO L93 Difference]: Finished difference Result 1678 states and 4133 transitions. [2022-11-26 00:29:02,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:02,764 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:02,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:02,767 INFO L225 Difference]: With dead ends: 1678 [2022-11-26 00:29:02,767 INFO L226 Difference]: Without dead ends: 1662 [2022-11-26 00:29:02,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:02,768 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:02,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-11-26 00:29:02,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1658. [2022-11-26 00:29:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1657 states have (on average 2.474954737477369) internal successors, (4101), 1657 states have internal predecessors, (4101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 4101 transitions. [2022-11-26 00:29:02,799 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 4101 transitions. Word has length 32 [2022-11-26 00:29:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:02,799 INFO L495 AbstractCegarLoop]: Abstraction has 1658 states and 4101 transitions. [2022-11-26 00:29:02,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 4101 transitions. [2022-11-26 00:29:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:02,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:02,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:02,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-26 00:29:02,803 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:02,804 INFO L85 PathProgramCache]: Analyzing trace with hash 514270390, now seen corresponding path program 46 times [2022-11-26 00:29:02,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:02,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203462308] [2022-11-26 00:29:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:02,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:03,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:03,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203462308] [2022-11-26 00:29:03,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203462308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:03,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:03,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:03,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765604170] [2022-11-26 00:29:03,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:03,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:03,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:03,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:03,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:03,097 INFO L87 Difference]: Start difference. First operand 1658 states and 4101 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:03,341 INFO L93 Difference]: Finished difference Result 1666 states and 4111 transitions. [2022-11-26 00:29:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:29:03,342 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:03,345 INFO L225 Difference]: With dead ends: 1666 [2022-11-26 00:29:03,345 INFO L226 Difference]: Without dead ends: 1630 [2022-11-26 00:29:03,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:29:03,345 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:03,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:03,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2022-11-26 00:29:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2022-11-26 00:29:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 2.487415592387968) internal successors, (4052), 1629 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 4052 transitions. [2022-11-26 00:29:03,377 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 4052 transitions. Word has length 32 [2022-11-26 00:29:03,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:03,377 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 4052 transitions. [2022-11-26 00:29:03,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 4052 transitions. [2022-11-26 00:29:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:03,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:03,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:03,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-26 00:29:03,382 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:03,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:03,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1190628562, now seen corresponding path program 47 times [2022-11-26 00:29:03,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:03,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678232733] [2022-11-26 00:29:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:03,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:03,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:03,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678232733] [2022-11-26 00:29:03,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678232733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:03,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:03,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:29:03,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008238344] [2022-11-26 00:29:03,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:03,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:29:03,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:29:03,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:29:03,620 INFO L87 Difference]: Start difference. First operand 1630 states and 4052 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:03,892 INFO L93 Difference]: Finished difference Result 2682 states and 6255 transitions. [2022-11-26 00:29:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:29:03,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:03,897 INFO L225 Difference]: With dead ends: 2682 [2022-11-26 00:29:03,897 INFO L226 Difference]: Without dead ends: 2360 [2022-11-26 00:29:03,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:29:03,897 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:03,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2022-11-26 00:29:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1798. [2022-11-26 00:29:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1797 states have (on average 2.4290484140233723) internal successors, (4365), 1797 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 4365 transitions. [2022-11-26 00:29:03,938 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 4365 transitions. Word has length 32 [2022-11-26 00:29:03,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:03,938 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 4365 transitions. [2022-11-26 00:29:03,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 4365 transitions. [2022-11-26 00:29:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:03,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:03,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:03,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-26 00:29:03,942 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:03,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1497368704, now seen corresponding path program 48 times [2022-11-26 00:29:03,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:03,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860434811] [2022-11-26 00:29:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:04,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:04,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860434811] [2022-11-26 00:29:04,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860434811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:04,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:04,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:29:04,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557486201] [2022-11-26 00:29:04,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:04,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:29:04,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:29:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:29:04,188 INFO L87 Difference]: Start difference. First operand 1798 states and 4365 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:04,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:04,618 INFO L93 Difference]: Finished difference Result 1812 states and 3786 transitions. [2022-11-26 00:29:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:04,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:04,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:04,620 INFO L225 Difference]: With dead ends: 1812 [2022-11-26 00:29:04,620 INFO L226 Difference]: Without dead ends: 1040 [2022-11-26 00:29:04,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:29:04,620 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:04,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-11-26 00:29:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 862. [2022-11-26 00:29:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.2067363530778166) internal successors, (1900), 861 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1900 transitions. [2022-11-26 00:29:04,638 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1900 transitions. Word has length 32 [2022-11-26 00:29:04,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:04,638 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1900 transitions. [2022-11-26 00:29:04,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1900 transitions. [2022-11-26 00:29:04,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:04,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:04,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-26 00:29:04,640 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:04,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2053230440, now seen corresponding path program 49 times [2022-11-26 00:29:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:04,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132832641] [2022-11-26 00:29:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:04,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:04,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132832641] [2022-11-26 00:29:04,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132832641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:04,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:04,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:04,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773880502] [2022-11-26 00:29:04,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:04,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:04,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:04,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:04,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:04,929 INFO L87 Difference]: Start difference. First operand 862 states and 1900 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:05,503 INFO L93 Difference]: Finished difference Result 920 states and 1884 transitions. [2022-11-26 00:29:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:29:05,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:05,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:05,505 INFO L225 Difference]: With dead ends: 920 [2022-11-26 00:29:05,505 INFO L226 Difference]: Without dead ends: 544 [2022-11-26 00:29:05,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:29:05,505 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:05,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:29:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-26 00:29:05,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 466. [2022-11-26 00:29:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 2.1268817204301076) internal successors, (989), 465 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 989 transitions. [2022-11-26 00:29:05,514 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 989 transitions. Word has length 32 [2022-11-26 00:29:05,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:05,515 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 989 transitions. [2022-11-26 00:29:05,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:05,515 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 989 transitions. [2022-11-26 00:29:05,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:05,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:05,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:05,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-26 00:29:05,517 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:05,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash 257441894, now seen corresponding path program 50 times [2022-11-26 00:29:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:05,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837795896] [2022-11-26 00:29:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:05,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:05,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:05,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837795896] [2022-11-26 00:29:05,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837795896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:05,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:05,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:05,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511507935] [2022-11-26 00:29:05,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:05,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:05,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:05,843 INFO L87 Difference]: Start difference. First operand 466 states and 989 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:06,224 INFO L93 Difference]: Finished difference Result 612 states and 1229 transitions. [2022-11-26 00:29:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:29:06,224 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:06,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:06,225 INFO L225 Difference]: With dead ends: 612 [2022-11-26 00:29:06,225 INFO L226 Difference]: Without dead ends: 600 [2022-11-26 00:29:06,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:29:06,226 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:06,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-11-26 00:29:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 470. [2022-11-26 00:29:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 2.1108742004264394) internal successors, (990), 469 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 990 transitions. [2022-11-26 00:29:06,236 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 990 transitions. Word has length 32 [2022-11-26 00:29:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:06,237 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 990 transitions. [2022-11-26 00:29:06,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 990 transitions. [2022-11-26 00:29:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:06,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:06,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:06,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-26 00:29:06,238 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash 833780454, now seen corresponding path program 51 times [2022-11-26 00:29:06,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:06,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091115200] [2022-11-26 00:29:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:06,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:06,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:06,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091115200] [2022-11-26 00:29:06,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091115200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:06,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:06,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843026712] [2022-11-26 00:29:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:06,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:06,566 INFO L87 Difference]: Start difference. First operand 470 states and 990 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:07,016 INFO L93 Difference]: Finished difference Result 532 states and 1095 transitions. [2022-11-26 00:29:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:07,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:07,017 INFO L225 Difference]: With dead ends: 532 [2022-11-26 00:29:07,017 INFO L226 Difference]: Without dead ends: 516 [2022-11-26 00:29:07,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:29:07,018 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:07,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:29:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-26 00:29:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 462. [2022-11-26 00:29:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 2.108459869848156) internal successors, (972), 461 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 972 transitions. [2022-11-26 00:29:07,027 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 972 transitions. Word has length 32 [2022-11-26 00:29:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:07,027 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 972 transitions. [2022-11-26 00:29:07,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 972 transitions. [2022-11-26 00:29:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:07,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:07,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:07,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-26 00:29:07,029 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:07,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:07,029 INFO L85 PathProgramCache]: Analyzing trace with hash 883914386, now seen corresponding path program 52 times [2022-11-26 00:29:07,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:07,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765561678] [2022-11-26 00:29:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:07,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:07,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:07,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765561678] [2022-11-26 00:29:07,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765561678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:07,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:07,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:07,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325587530] [2022-11-26 00:29:07,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:07,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:07,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:07,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:07,342 INFO L87 Difference]: Start difference. First operand 462 states and 972 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:07,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:07,708 INFO L93 Difference]: Finished difference Result 478 states and 996 transitions. [2022-11-26 00:29:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:29:07,709 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:07,710 INFO L225 Difference]: With dead ends: 478 [2022-11-26 00:29:07,710 INFO L226 Difference]: Without dead ends: 458 [2022-11-26 00:29:07,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:29:07,710 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:07,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-26 00:29:07,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 454. [2022-11-26 00:29:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 2.1059602649006623) internal successors, (954), 453 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 954 transitions. [2022-11-26 00:29:07,719 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 954 transitions. Word has length 32 [2022-11-26 00:29:07,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:07,719 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 954 transitions. [2022-11-26 00:29:07,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 954 transitions. [2022-11-26 00:29:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:07,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:07,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:07,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-26 00:29:07,721 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:07,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1056092776, now seen corresponding path program 53 times [2022-11-26 00:29:07,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:07,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023510134] [2022-11-26 00:29:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:07,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:08,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:08,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023510134] [2022-11-26 00:29:08,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023510134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:08,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:08,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790251479] [2022-11-26 00:29:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:08,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:08,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:08,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:08,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:08,049 INFO L87 Difference]: Start difference. First operand 454 states and 954 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:08,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:08,412 INFO L93 Difference]: Finished difference Result 474 states and 984 transitions. [2022-11-26 00:29:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:08,412 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:08,413 INFO L225 Difference]: With dead ends: 474 [2022-11-26 00:29:08,413 INFO L226 Difference]: Without dead ends: 450 [2022-11-26 00:29:08,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:29:08,414 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:08,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-26 00:29:08,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 446. [2022-11-26 00:29:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.103370786516854) internal successors, (936), 445 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 936 transitions. [2022-11-26 00:29:08,422 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 936 transitions. Word has length 32 [2022-11-26 00:29:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:08,422 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 936 transitions. [2022-11-26 00:29:08,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 936 transitions. [2022-11-26 00:29:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:08,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:08,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:08,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-26 00:29:08,424 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:08,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1330360086, now seen corresponding path program 54 times [2022-11-26 00:29:08,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:08,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781441127] [2022-11-26 00:29:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:08,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:08,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:08,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781441127] [2022-11-26 00:29:08,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781441127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:08,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:08,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:08,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285286324] [2022-11-26 00:29:08,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:08,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:08,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:08,717 INFO L87 Difference]: Start difference. First operand 446 states and 936 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:09,088 INFO L93 Difference]: Finished difference Result 526 states and 1064 transitions. [2022-11-26 00:29:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:09,090 INFO L225 Difference]: With dead ends: 526 [2022-11-26 00:29:09,090 INFO L226 Difference]: Without dead ends: 508 [2022-11-26 00:29:09,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:29:09,091 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:09,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-11-26 00:29:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 454. [2022-11-26 00:29:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 2.0838852097130243) internal successors, (944), 453 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 944 transitions. [2022-11-26 00:29:09,099 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 944 transitions. Word has length 32 [2022-11-26 00:29:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:09,100 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 944 transitions. [2022-11-26 00:29:09,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 944 transitions. [2022-11-26 00:29:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:09,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:09,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:09,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-26 00:29:09,101 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash 499243042, now seen corresponding path program 55 times [2022-11-26 00:29:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:09,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423311758] [2022-11-26 00:29:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:09,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:09,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:09,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423311758] [2022-11-26 00:29:09,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423311758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:09,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:09,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:09,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106017328] [2022-11-26 00:29:09,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:09,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:09,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:09,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:09,415 INFO L87 Difference]: Start difference. First operand 454 states and 944 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:09,746 INFO L93 Difference]: Finished difference Result 614 states and 1188 transitions. [2022-11-26 00:29:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:09,748 INFO L225 Difference]: With dead ends: 614 [2022-11-26 00:29:09,748 INFO L226 Difference]: Without dead ends: 590 [2022-11-26 00:29:09,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:09,748 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:09,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-11-26 00:29:09,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 442. [2022-11-26 00:29:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 2.072562358276644) internal successors, (914), 441 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 914 transitions. [2022-11-26 00:29:09,759 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 914 transitions. Word has length 32 [2022-11-26 00:29:09,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:09,760 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 914 transitions. [2022-11-26 00:29:09,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:09,760 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 914 transitions. [2022-11-26 00:29:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:09,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:09,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:09,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-26 00:29:09,762 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:09,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:09,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1780359214, now seen corresponding path program 56 times [2022-11-26 00:29:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:09,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257818366] [2022-11-26 00:29:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:09,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:10,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:10,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257818366] [2022-11-26 00:29:10,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257818366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:10,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:10,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807466192] [2022-11-26 00:29:10,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:10,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:10,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:10,050 INFO L87 Difference]: Start difference. First operand 442 states and 914 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:10,362 INFO L93 Difference]: Finished difference Result 486 states and 980 transitions. [2022-11-26 00:29:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:10,363 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:10,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:10,364 INFO L225 Difference]: With dead ends: 486 [2022-11-26 00:29:10,364 INFO L226 Difference]: Without dead ends: 444 [2022-11-26 00:29:10,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:10,365 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:10,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:10,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-26 00:29:10,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 430. [2022-11-26 00:29:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 2.0606060606060606) internal successors, (884), 429 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 884 transitions. [2022-11-26 00:29:10,372 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 884 transitions. Word has length 32 [2022-11-26 00:29:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:10,372 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 884 transitions. [2022-11-26 00:29:10,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:10,372 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 884 transitions. [2022-11-26 00:29:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:10,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:10,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:10,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-26 00:29:10,374 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:10,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2102802216, now seen corresponding path program 57 times [2022-11-26 00:29:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:10,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379351667] [2022-11-26 00:29:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:10,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:10,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:10,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379351667] [2022-11-26 00:29:10,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379351667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:10,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:10,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:10,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402755179] [2022-11-26 00:29:10,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:10,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:10,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:10,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:10,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:10,659 INFO L87 Difference]: Start difference. First operand 430 states and 884 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:10,923 INFO L93 Difference]: Finished difference Result 474 states and 950 transitions. [2022-11-26 00:29:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:29:10,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:10,925 INFO L225 Difference]: With dead ends: 474 [2022-11-26 00:29:10,925 INFO L226 Difference]: Without dead ends: 412 [2022-11-26 00:29:10,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:29:10,925 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:10,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-26 00:29:10,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 400. [2022-11-26 00:29:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 2.0676691729323307) internal successors, (825), 399 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 825 transitions. [2022-11-26 00:29:10,932 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 825 transitions. Word has length 32 [2022-11-26 00:29:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:10,933 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 825 transitions. [2022-11-26 00:29:10,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 825 transitions. [2022-11-26 00:29:10,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:10,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:10,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:10,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-26 00:29:10,935 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1681517734, now seen corresponding path program 58 times [2022-11-26 00:29:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:10,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046082218] [2022-11-26 00:29:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:11,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:11,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046082218] [2022-11-26 00:29:11,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046082218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:11,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:11,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:11,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498781815] [2022-11-26 00:29:11,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:11,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:11,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:11,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:11,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:11,272 INFO L87 Difference]: Start difference. First operand 400 states and 825 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:11,628 INFO L93 Difference]: Finished difference Result 436 states and 883 transitions. [2022-11-26 00:29:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:11,628 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:11,629 INFO L225 Difference]: With dead ends: 436 [2022-11-26 00:29:11,629 INFO L226 Difference]: Without dead ends: 428 [2022-11-26 00:29:11,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:29:11,630 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:11,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-26 00:29:11,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 402. [2022-11-26 00:29:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.0598503740648377) internal successors, (826), 401 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 826 transitions. [2022-11-26 00:29:11,638 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 826 transitions. Word has length 32 [2022-11-26 00:29:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:11,638 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 826 transitions. [2022-11-26 00:29:11,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:11,638 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 826 transitions. [2022-11-26 00:29:11,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:11,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:11,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:11,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-26 00:29:11,640 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:11,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:11,640 INFO L85 PathProgramCache]: Analyzing trace with hash -757102326, now seen corresponding path program 59 times [2022-11-26 00:29:11,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:11,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797828086] [2022-11-26 00:29:11,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:11,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:11,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:11,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797828086] [2022-11-26 00:29:11,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797828086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:11,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:11,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:11,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807034165] [2022-11-26 00:29:11,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:11,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:11,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:11,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:11,938 INFO L87 Difference]: Start difference. First operand 402 states and 826 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:12,342 INFO L93 Difference]: Finished difference Result 500 states and 979 transitions. [2022-11-26 00:29:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:29:12,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:12,344 INFO L225 Difference]: With dead ends: 500 [2022-11-26 00:29:12,344 INFO L226 Difference]: Without dead ends: 488 [2022-11-26 00:29:12,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:29:12,345 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:12,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:12,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-26 00:29:12,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 398. [2022-11-26 00:29:12,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 2.0554156171284634) internal successors, (816), 397 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 816 transitions. [2022-11-26 00:29:12,352 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 816 transitions. Word has length 32 [2022-11-26 00:29:12,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:12,352 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 816 transitions. [2022-11-26 00:29:12,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 816 transitions. [2022-11-26 00:29:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:12,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:12,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:12,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-26 00:29:12,354 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:12,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1118129636, now seen corresponding path program 60 times [2022-11-26 00:29:12,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:12,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706041985] [2022-11-26 00:29:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:12,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:12,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:12,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706041985] [2022-11-26 00:29:12,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706041985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:12,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:12,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:12,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633536716] [2022-11-26 00:29:12,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:12,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:12,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:12,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:12,654 INFO L87 Difference]: Start difference. First operand 398 states and 816 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:13,027 INFO L93 Difference]: Finished difference Result 412 states and 835 transitions. [2022-11-26 00:29:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:29:13,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:13,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:13,028 INFO L225 Difference]: With dead ends: 412 [2022-11-26 00:29:13,028 INFO L226 Difference]: Without dead ends: 396 [2022-11-26 00:29:13,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:29:13,029 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:13,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-26 00:29:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2022-11-26 00:29:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 2.05089058524173) internal successors, (806), 393 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 806 transitions. [2022-11-26 00:29:13,036 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 806 transitions. Word has length 32 [2022-11-26 00:29:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:13,036 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 806 transitions. [2022-11-26 00:29:13,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 806 transitions. [2022-11-26 00:29:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:13,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:13,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-26 00:29:13,038 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:13,038 INFO L85 PathProgramCache]: Analyzing trace with hash -387277400, now seen corresponding path program 61 times [2022-11-26 00:29:13,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413324440] [2022-11-26 00:29:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:13,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:13,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:13,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413324440] [2022-11-26 00:29:13,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413324440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:13,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:13,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:13,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157835338] [2022-11-26 00:29:13,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:13,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:13,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:13,356 INFO L87 Difference]: Start difference. First operand 394 states and 806 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:13,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:13,702 INFO L93 Difference]: Finished difference Result 400 states and 813 transitions. [2022-11-26 00:29:13,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:29:13,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:13,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:13,703 INFO L225 Difference]: With dead ends: 400 [2022-11-26 00:29:13,703 INFO L226 Difference]: Without dead ends: 370 [2022-11-26 00:29:13,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:29:13,704 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:13,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-26 00:29:13,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-11-26 00:29:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 2.0704607046070462) internal successors, (764), 369 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 764 transitions. [2022-11-26 00:29:13,713 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 764 transitions. Word has length 32 [2022-11-26 00:29:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:13,713 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 764 transitions. [2022-11-26 00:29:13,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:13,714 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 764 transitions. [2022-11-26 00:29:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:13,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:13,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:13,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-26 00:29:13,717 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash -482622320, now seen corresponding path program 62 times [2022-11-26 00:29:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:13,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422452777] [2022-11-26 00:29:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:13,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:14,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:14,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422452777] [2022-11-26 00:29:14,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422452777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:14,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:14,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:14,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765940112] [2022-11-26 00:29:14,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:14,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:14,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:14,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:14,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:14,032 INFO L87 Difference]: Start difference. First operand 370 states and 764 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:14,312 INFO L93 Difference]: Finished difference Result 386 states and 786 transitions. [2022-11-26 00:29:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:14,313 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:14,314 INFO L225 Difference]: With dead ends: 386 [2022-11-26 00:29:14,314 INFO L226 Difference]: Without dead ends: 374 [2022-11-26 00:29:14,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:14,314 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:14,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-26 00:29:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 370. [2022-11-26 00:29:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 2.059620596205962) internal successors, (760), 369 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 760 transitions. [2022-11-26 00:29:14,319 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 760 transitions. Word has length 32 [2022-11-26 00:29:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:14,319 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 760 transitions. [2022-11-26 00:29:14,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 760 transitions. [2022-11-26 00:29:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:14,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:14,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:14,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-26 00:29:14,320 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash -12132866, now seen corresponding path program 63 times [2022-11-26 00:29:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:14,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487173743] [2022-11-26 00:29:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:14,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:14,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:14,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487173743] [2022-11-26 00:29:14,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487173743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:14,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:14,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807613246] [2022-11-26 00:29:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:14,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:14,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:14,560 INFO L87 Difference]: Start difference. First operand 370 states and 760 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:14,988 INFO L93 Difference]: Finished difference Result 430 states and 848 transitions. [2022-11-26 00:29:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:14,989 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:14,989 INFO L225 Difference]: With dead ends: 430 [2022-11-26 00:29:14,989 INFO L226 Difference]: Without dead ends: 420 [2022-11-26 00:29:14,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:29:14,990 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:14,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-26 00:29:14,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 370. [2022-11-26 00:29:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 2.043360433604336) internal successors, (754), 369 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 754 transitions. [2022-11-26 00:29:14,996 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 754 transitions. Word has length 32 [2022-11-26 00:29:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:14,996 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 754 transitions. [2022-11-26 00:29:14,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 754 transitions. [2022-11-26 00:29:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:14,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:14,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:14,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-26 00:29:14,998 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1037975086, now seen corresponding path program 64 times [2022-11-26 00:29:14,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:14,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175424803] [2022-11-26 00:29:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:15,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:15,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175424803] [2022-11-26 00:29:15,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175424803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:15,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:15,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:15,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987224640] [2022-11-26 00:29:15,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:15,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:15,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:15,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:15,254 INFO L87 Difference]: Start difference. First operand 370 states and 754 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:15,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:15,513 INFO L93 Difference]: Finished difference Result 450 states and 874 transitions. [2022-11-26 00:29:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:15,514 INFO L225 Difference]: With dead ends: 450 [2022-11-26 00:29:15,514 INFO L226 Difference]: Without dead ends: 434 [2022-11-26 00:29:15,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:15,514 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:15,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-26 00:29:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 366. [2022-11-26 00:29:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 2.0383561643835617) internal successors, (744), 365 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 744 transitions. [2022-11-26 00:29:15,522 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 744 transitions. Word has length 32 [2022-11-26 00:29:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:15,522 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 744 transitions. [2022-11-26 00:29:15,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 744 transitions. [2022-11-26 00:29:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:15,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:15,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:15,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-26 00:29:15,523 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1950068560, now seen corresponding path program 65 times [2022-11-26 00:29:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:15,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938873079] [2022-11-26 00:29:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:15,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:15,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938873079] [2022-11-26 00:29:15,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938873079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:15,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:15,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:15,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165859965] [2022-11-26 00:29:15,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:15,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:15,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:15,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:15,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:15,771 INFO L87 Difference]: Start difference. First operand 366 states and 744 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:15,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:15,984 INFO L93 Difference]: Finished difference Result 374 states and 754 transitions. [2022-11-26 00:29:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:29:15,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:15,985 INFO L225 Difference]: With dead ends: 374 [2022-11-26 00:29:15,986 INFO L226 Difference]: Without dead ends: 336 [2022-11-26 00:29:15,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:29:15,986 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:15,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:15,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-26 00:29:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2022-11-26 00:29:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.062686567164179) internal successors, (691), 335 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 691 transitions. [2022-11-26 00:29:15,991 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 691 transitions. Word has length 32 [2022-11-26 00:29:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:15,991 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 691 transitions. [2022-11-26 00:29:15,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 691 transitions. [2022-11-26 00:29:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:15,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:15,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:15,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-26 00:29:15,993 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:15,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1516704806, now seen corresponding path program 66 times [2022-11-26 00:29:15,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:15,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211613515] [2022-11-26 00:29:15,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:15,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:16,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:16,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211613515] [2022-11-26 00:29:16,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211613515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:16,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:16,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840072440] [2022-11-26 00:29:16,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:16,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:16,328 INFO L87 Difference]: Start difference. First operand 336 states and 691 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:16,662 INFO L93 Difference]: Finished difference Result 430 states and 840 transitions. [2022-11-26 00:29:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:29:16,663 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:16,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:16,664 INFO L225 Difference]: With dead ends: 430 [2022-11-26 00:29:16,664 INFO L226 Difference]: Without dead ends: 418 [2022-11-26 00:29:16,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:29:16,664 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:16,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:16,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-26 00:29:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 328. [2022-11-26 00:29:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.0458715596330275) internal successors, (669), 327 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 669 transitions. [2022-11-26 00:29:16,670 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 669 transitions. Word has length 32 [2022-11-26 00:29:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:16,670 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 669 transitions. [2022-11-26 00:29:16,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 669 transitions. [2022-11-26 00:29:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:16,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:16,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:16,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-26 00:29:16,672 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash 886172216, now seen corresponding path program 67 times [2022-11-26 00:29:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:16,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711736712] [2022-11-26 00:29:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:16,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:16,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711736712] [2022-11-26 00:29:16,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711736712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:16,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:16,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:16,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195029032] [2022-11-26 00:29:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:16,936 INFO L87 Difference]: Start difference. First operand 328 states and 669 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:17,276 INFO L93 Difference]: Finished difference Result 380 states and 751 transitions. [2022-11-26 00:29:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:17,277 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:17,278 INFO L225 Difference]: With dead ends: 380 [2022-11-26 00:29:17,278 INFO L226 Difference]: Without dead ends: 364 [2022-11-26 00:29:17,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:29:17,279 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:17,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-26 00:29:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 320. [2022-11-26 00:29:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 2.040752351097179) internal successors, (651), 319 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 651 transitions. [2022-11-26 00:29:17,285 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 651 transitions. Word has length 32 [2022-11-26 00:29:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:17,286 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 651 transitions. [2022-11-26 00:29:17,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 651 transitions. [2022-11-26 00:29:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:17,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:17,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:17,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-26 00:29:17,287 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:17,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1137089182, now seen corresponding path program 68 times [2022-11-26 00:29:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:17,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109090757] [2022-11-26 00:29:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:17,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:17,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:17,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109090757] [2022-11-26 00:29:17,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109090757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:17,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:17,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:17,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420969231] [2022-11-26 00:29:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:17,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:17,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:17,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:17,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:17,578 INFO L87 Difference]: Start difference. First operand 320 states and 651 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:17,974 INFO L93 Difference]: Finished difference Result 332 states and 667 transitions. [2022-11-26 00:29:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:29:17,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:17,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:17,975 INFO L225 Difference]: With dead ends: 332 [2022-11-26 00:29:17,975 INFO L226 Difference]: Without dead ends: 312 [2022-11-26 00:29:17,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:29:17,975 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:17,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:17,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-26 00:29:17,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2022-11-26 00:29:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 2.035369774919614) internal successors, (633), 311 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 633 transitions. [2022-11-26 00:29:17,981 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 633 transitions. Word has length 32 [2022-11-26 00:29:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:17,981 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 633 transitions. [2022-11-26 00:29:17,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 633 transitions. [2022-11-26 00:29:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:17,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:17,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:17,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-26 00:29:17,983 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1946070360, now seen corresponding path program 69 times [2022-11-26 00:29:17,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:17,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732666952] [2022-11-26 00:29:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:17,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:18,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:18,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732666952] [2022-11-26 00:29:18,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732666952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:18,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:18,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:18,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450337204] [2022-11-26 00:29:18,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:18,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:18,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:18,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:18,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:18,274 INFO L87 Difference]: Start difference. First operand 312 states and 633 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:18,601 INFO L93 Difference]: Finished difference Result 328 states and 655 transitions. [2022-11-26 00:29:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:18,601 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:18,602 INFO L225 Difference]: With dead ends: 328 [2022-11-26 00:29:18,602 INFO L226 Difference]: Without dead ends: 304 [2022-11-26 00:29:18,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:29:18,602 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:18,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:18,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-26 00:29:18,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2022-11-26 00:29:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 2.0297029702970297) internal successors, (615), 303 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:18,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 615 transitions. [2022-11-26 00:29:18,608 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 615 transitions. Word has length 32 [2022-11-26 00:29:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:18,608 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 615 transitions. [2022-11-26 00:29:18,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:18,609 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 615 transitions. [2022-11-26 00:29:18,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:18,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:18,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:18,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-26 00:29:18,610 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash -576079466, now seen corresponding path program 70 times [2022-11-26 00:29:18,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:18,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776119062] [2022-11-26 00:29:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:18,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:18,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:18,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776119062] [2022-11-26 00:29:18,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776119062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:18,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:18,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:18,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315232077] [2022-11-26 00:29:18,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:18,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:18,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:18,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:18,864 INFO L87 Difference]: Start difference. First operand 304 states and 615 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:19,081 INFO L93 Difference]: Finished difference Result 362 states and 698 transitions. [2022-11-26 00:29:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:29:19,081 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:19,082 INFO L225 Difference]: With dead ends: 362 [2022-11-26 00:29:19,082 INFO L226 Difference]: Without dead ends: 320 [2022-11-26 00:29:19,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:29:19,083 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:19,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-26 00:29:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 300. [2022-11-26 00:29:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.9966555183946488) internal successors, (597), 299 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 597 transitions. [2022-11-26 00:29:19,088 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 597 transitions. Word has length 32 [2022-11-26 00:29:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:19,089 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 597 transitions. [2022-11-26 00:29:19,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 597 transitions. [2022-11-26 00:29:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:19,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:19,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:19,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-26 00:29:19,090 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:19,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:19,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1224135584, now seen corresponding path program 71 times [2022-11-26 00:29:19,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:19,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599632957] [2022-11-26 00:29:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:19,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:19,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599632957] [2022-11-26 00:29:19,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599632957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:19,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:19,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100440935] [2022-11-26 00:29:19,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:19,418 INFO L87 Difference]: Start difference. First operand 300 states and 597 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:19,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:19,704 INFO L93 Difference]: Finished difference Result 424 states and 787 transitions. [2022-11-26 00:29:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:19,704 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:19,705 INFO L225 Difference]: With dead ends: 424 [2022-11-26 00:29:19,705 INFO L226 Difference]: Without dead ends: 412 [2022-11-26 00:29:19,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:19,706 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:19,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-26 00:29:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 302. [2022-11-26 00:29:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.9667774086378738) internal successors, (592), 301 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 592 transitions. [2022-11-26 00:29:19,711 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 592 transitions. Word has length 32 [2022-11-26 00:29:19,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:19,711 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 592 transitions. [2022-11-26 00:29:19,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:19,712 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 592 transitions. [2022-11-26 00:29:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:19,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:19,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:19,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-26 00:29:19,713 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:19,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1599889690, now seen corresponding path program 72 times [2022-11-26 00:29:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:19,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943979510] [2022-11-26 00:29:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:19,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:19,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943979510] [2022-11-26 00:29:19,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943979510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:19,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:19,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386154198] [2022-11-26 00:29:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:19,970 INFO L87 Difference]: Start difference. First operand 302 states and 592 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:20,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:20,311 INFO L93 Difference]: Finished difference Result 384 states and 707 transitions. [2022-11-26 00:29:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:20,311 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:20,312 INFO L225 Difference]: With dead ends: 384 [2022-11-26 00:29:20,312 INFO L226 Difference]: Without dead ends: 344 [2022-11-26 00:29:20,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:29:20,313 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:20,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-26 00:29:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 290. [2022-11-26 00:29:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.9031141868512111) internal successors, (550), 289 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 550 transitions. [2022-11-26 00:29:20,318 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 550 transitions. Word has length 32 [2022-11-26 00:29:20,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:20,318 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 550 transitions. [2022-11-26 00:29:20,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:20,318 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 550 transitions. [2022-11-26 00:29:20,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:20,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:20,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:20,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-26 00:29:20,319 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:20,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash -415641694, now seen corresponding path program 73 times [2022-11-26 00:29:20,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:20,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223693103] [2022-11-26 00:29:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:20,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:20,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:20,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223693103] [2022-11-26 00:29:20,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223693103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:20,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:20,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306149534] [2022-11-26 00:29:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:20,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:20,538 INFO L87 Difference]: Start difference. First operand 290 states and 550 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:20,787 INFO L93 Difference]: Finished difference Result 316 states and 585 transitions. [2022-11-26 00:29:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:20,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:20,788 INFO L225 Difference]: With dead ends: 316 [2022-11-26 00:29:20,788 INFO L226 Difference]: Without dead ends: 254 [2022-11-26 00:29:20,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:20,789 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:20,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-26 00:29:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 246. [2022-11-26 00:29:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.9183673469387754) internal successors, (470), 245 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 470 transitions. [2022-11-26 00:29:20,794 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 470 transitions. Word has length 32 [2022-11-26 00:29:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:20,794 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 470 transitions. [2022-11-26 00:29:20,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 470 transitions. [2022-11-26 00:29:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:20,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:20,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:20,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-26 00:29:20,796 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:20,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:20,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2044549014, now seen corresponding path program 74 times [2022-11-26 00:29:20,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:20,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465356293] [2022-11-26 00:29:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:20,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:21,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:21,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465356293] [2022-11-26 00:29:21,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465356293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:21,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:21,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:21,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737683585] [2022-11-26 00:29:21,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:21,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:21,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:21,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:21,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:21,087 INFO L87 Difference]: Start difference. First operand 246 states and 470 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:21,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:21,393 INFO L93 Difference]: Finished difference Result 324 states and 591 transitions. [2022-11-26 00:29:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:29:21,394 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:21,394 INFO L225 Difference]: With dead ends: 324 [2022-11-26 00:29:21,394 INFO L226 Difference]: Without dead ends: 316 [2022-11-26 00:29:21,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:29:21,395 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:21,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-26 00:29:21,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 248. [2022-11-26 00:29:21,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.9068825910931173) internal successors, (471), 247 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 471 transitions. [2022-11-26 00:29:21,402 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 471 transitions. Word has length 32 [2022-11-26 00:29:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:21,402 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 471 transitions. [2022-11-26 00:29:21,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 471 transitions. [2022-11-26 00:29:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:21,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:21,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:21,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-26 00:29:21,406 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:21,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:21,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2013384904, now seen corresponding path program 75 times [2022-11-26 00:29:21,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:21,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836376147] [2022-11-26 00:29:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:21,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:21,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:21,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836376147] [2022-11-26 00:29:21,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836376147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:21,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:21,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:21,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122615050] [2022-11-26 00:29:21,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:21,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:21,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:21,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:21,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:21,648 INFO L87 Difference]: Start difference. First operand 248 states and 471 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:21,927 INFO L93 Difference]: Finished difference Result 270 states and 502 transitions. [2022-11-26 00:29:21,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:21,928 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:21,928 INFO L225 Difference]: With dead ends: 270 [2022-11-26 00:29:21,928 INFO L226 Difference]: Without dead ends: 258 [2022-11-26 00:29:21,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:29:21,929 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:21,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:21,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-26 00:29:21,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 244. [2022-11-26 00:29:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.897119341563786) internal successors, (461), 243 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 461 transitions. [2022-11-26 00:29:21,934 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 461 transitions. Word has length 32 [2022-11-26 00:29:21,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:21,934 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 461 transitions. [2022-11-26 00:29:21,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:21,934 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 461 transitions. [2022-11-26 00:29:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:21,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:21,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:21,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-26 00:29:21,935 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2070836922, now seen corresponding path program 76 times [2022-11-26 00:29:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:21,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378127149] [2022-11-26 00:29:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:22,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:22,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378127149] [2022-11-26 00:29:22,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378127149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:22,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:22,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:22,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205172487] [2022-11-26 00:29:22,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:22,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:22,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:22,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:22,241 INFO L87 Difference]: Start difference. First operand 244 states and 461 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:22,631 INFO L93 Difference]: Finished difference Result 258 states and 480 transitions. [2022-11-26 00:29:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:29:22,632 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:22,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:22,632 INFO L225 Difference]: With dead ends: 258 [2022-11-26 00:29:22,633 INFO L226 Difference]: Without dead ends: 242 [2022-11-26 00:29:22,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:29:22,633 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:22,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:29:22,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-26 00:29:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 240. [2022-11-26 00:29:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.887029288702929) internal successors, (451), 239 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:22,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 451 transitions. [2022-11-26 00:29:22,637 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 451 transitions. Word has length 32 [2022-11-26 00:29:22,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:22,638 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 451 transitions. [2022-11-26 00:29:22,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:22,638 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 451 transitions. [2022-11-26 00:29:22,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:22,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:22,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:22,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-26 00:29:22,639 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:22,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2069269464, now seen corresponding path program 77 times [2022-11-26 00:29:22,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:22,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903118103] [2022-11-26 00:29:22,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:22,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:22,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:22,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903118103] [2022-11-26 00:29:22,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903118103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:22,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:22,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:22,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990767067] [2022-11-26 00:29:22,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:22,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:22,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:22,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:22,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:22,915 INFO L87 Difference]: Start difference. First operand 240 states and 451 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:23,196 INFO L93 Difference]: Finished difference Result 246 states and 458 transitions. [2022-11-26 00:29:23,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:29:23,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:23,197 INFO L225 Difference]: With dead ends: 246 [2022-11-26 00:29:23,197 INFO L226 Difference]: Without dead ends: 218 [2022-11-26 00:29:23,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:29:23,198 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:23,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-26 00:29:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-26 00:29:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.903225806451613) internal successors, (413), 217 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 413 transitions. [2022-11-26 00:29:23,201 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 413 transitions. Word has length 32 [2022-11-26 00:29:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:23,201 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 413 transitions. [2022-11-26 00:29:23,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 413 transitions. [2022-11-26 00:29:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:23,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:23,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:23,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-26 00:29:23,203 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:23,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash 497143476, now seen corresponding path program 78 times [2022-11-26 00:29:23,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:23,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667864790] [2022-11-26 00:29:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:23,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:23,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667864790] [2022-11-26 00:29:23,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667864790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:23,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:23,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957824400] [2022-11-26 00:29:23,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:23,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:23,491 INFO L87 Difference]: Start difference. First operand 218 states and 413 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:23,647 INFO L93 Difference]: Finished difference Result 230 states and 429 transitions. [2022-11-26 00:29:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:29:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:23,648 INFO L225 Difference]: With dead ends: 230 [2022-11-26 00:29:23,648 INFO L226 Difference]: Without dead ends: 214 [2022-11-26 00:29:23,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:29:23,648 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:23,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:29:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-26 00:29:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2022-11-26 00:29:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.892018779342723) internal successors, (403), 213 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 403 transitions. [2022-11-26 00:29:23,652 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 403 transitions. Word has length 32 [2022-11-26 00:29:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:23,652 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 403 transitions. [2022-11-26 00:29:23,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:23,652 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 403 transitions. [2022-11-26 00:29:23,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:23,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:23,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:23,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-26 00:29:23,653 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:23,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:23,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1818655242, now seen corresponding path program 79 times [2022-11-26 00:29:23,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:23,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096275965] [2022-11-26 00:29:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:23,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:23,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:23,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096275965] [2022-11-26 00:29:23,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096275965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:23,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:23,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801475488] [2022-11-26 00:29:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:23,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:23,959 INFO L87 Difference]: Start difference. First operand 214 states and 403 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:24,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:24,186 INFO L93 Difference]: Finished difference Result 264 states and 478 transitions. [2022-11-26 00:29:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:29:24,187 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:24,187 INFO L225 Difference]: With dead ends: 264 [2022-11-26 00:29:24,187 INFO L226 Difference]: Without dead ends: 252 [2022-11-26 00:29:24,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:29:24,188 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:24,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-26 00:29:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 212. [2022-11-26 00:29:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.8767772511848342) internal successors, (396), 211 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:24,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 396 transitions. [2022-11-26 00:29:24,192 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 396 transitions. Word has length 32 [2022-11-26 00:29:24,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:24,192 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 396 transitions. [2022-11-26 00:29:24,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 396 transitions. [2022-11-26 00:29:24,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:24,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:24,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:24,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-26 00:29:24,193 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:24,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2097552634, now seen corresponding path program 80 times [2022-11-26 00:29:24,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:24,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353846298] [2022-11-26 00:29:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:24,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:24,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:24,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353846298] [2022-11-26 00:29:24,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353846298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:24,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:24,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:24,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462337014] [2022-11-26 00:29:24,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:24,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:24,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:24,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:24,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:24,467 INFO L87 Difference]: Start difference. First operand 212 states and 396 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:24,652 INFO L93 Difference]: Finished difference Result 218 states and 403 transitions. [2022-11-26 00:29:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:29:24,652 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:24,653 INFO L225 Difference]: With dead ends: 218 [2022-11-26 00:29:24,653 INFO L226 Difference]: Without dead ends: 184 [2022-11-26 00:29:24,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:29:24,653 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:24,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-26 00:29:24,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-26 00:29:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.901639344262295) internal successors, (348), 183 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 348 transitions. [2022-11-26 00:29:24,656 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 348 transitions. Word has length 32 [2022-11-26 00:29:24,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:24,656 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 348 transitions. [2022-11-26 00:29:24,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 348 transitions. [2022-11-26 00:29:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:24,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:24,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:24,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-26 00:29:24,657 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2094693398, now seen corresponding path program 81 times [2022-11-26 00:29:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:24,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929948128] [2022-11-26 00:29:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:24,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:24,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929948128] [2022-11-26 00:29:24,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929948128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:24,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:24,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:24,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030548555] [2022-11-26 00:29:24,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:24,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:24,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:24,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:24,886 INFO L87 Difference]: Start difference. First operand 184 states and 348 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:25,119 INFO L93 Difference]: Finished difference Result 214 states and 391 transitions. [2022-11-26 00:29:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:29:25,119 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:25,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:25,119 INFO L225 Difference]: With dead ends: 214 [2022-11-26 00:29:25,120 INFO L226 Difference]: Without dead ends: 206 [2022-11-26 00:29:25,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:29:25,120 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:25,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-26 00:29:25,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 180. [2022-11-26 00:29:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.8770949720670391) internal successors, (336), 179 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 336 transitions. [2022-11-26 00:29:25,124 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 336 transitions. Word has length 32 [2022-11-26 00:29:25,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:25,124 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 336 transitions. [2022-11-26 00:29:25,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 336 transitions. [2022-11-26 00:29:25,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:25,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:25,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:25,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-26 00:29:25,125 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:25,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:25,125 INFO L85 PathProgramCache]: Analyzing trace with hash 318616342, now seen corresponding path program 82 times [2022-11-26 00:29:25,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:25,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339495453] [2022-11-26 00:29:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:25,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:25,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:25,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339495453] [2022-11-26 00:29:25,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339495453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:25,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:25,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:25,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903037135] [2022-11-26 00:29:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:25,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:25,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:25,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:25,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:25,391 INFO L87 Difference]: Start difference. First operand 180 states and 336 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:25,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:25,679 INFO L93 Difference]: Finished difference Result 204 states and 370 transitions. [2022-11-26 00:29:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:25,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:25,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:25,683 INFO L225 Difference]: With dead ends: 204 [2022-11-26 00:29:25,683 INFO L226 Difference]: Without dead ends: 192 [2022-11-26 00:29:25,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:29:25,684 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:25,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-26 00:29:25,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 176. [2022-11-26 00:29:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.8628571428571428) internal successors, (326), 175 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 326 transitions. [2022-11-26 00:29:25,687 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 326 transitions. Word has length 32 [2022-11-26 00:29:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:25,688 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 326 transitions. [2022-11-26 00:29:25,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 326 transitions. [2022-11-26 00:29:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:25,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:25,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:25,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-26 00:29:25,689 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:25,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:25,690 INFO L85 PathProgramCache]: Analyzing trace with hash 261164324, now seen corresponding path program 83 times [2022-11-26 00:29:25,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:25,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460042400] [2022-11-26 00:29:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:25,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:25,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:25,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460042400] [2022-11-26 00:29:25,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460042400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:25,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:25,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:25,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231826632] [2022-11-26 00:29:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:25,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:25,904 INFO L87 Difference]: Start difference. First operand 176 states and 326 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:26,229 INFO L93 Difference]: Finished difference Result 188 states and 342 transitions. [2022-11-26 00:29:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:29:26,230 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:26,230 INFO L225 Difference]: With dead ends: 188 [2022-11-26 00:29:26,230 INFO L226 Difference]: Without dead ends: 172 [2022-11-26 00:29:26,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:29:26,231 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:26,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:26,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-26 00:29:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-11-26 00:29:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.847953216374269) internal successors, (316), 171 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 316 transitions. [2022-11-26 00:29:26,233 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 316 transitions. Word has length 32 [2022-11-26 00:29:26,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:26,233 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 316 transitions. [2022-11-26 00:29:26,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 316 transitions. [2022-11-26 00:29:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:26,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:26,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:26,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-26 00:29:26,234 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2126575656, now seen corresponding path program 84 times [2022-11-26 00:29:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:26,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085317996] [2022-11-26 00:29:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:26,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:26,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:26,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085317996] [2022-11-26 00:29:26,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085317996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:26,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:26,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:26,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95681570] [2022-11-26 00:29:26,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:26,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:26,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:26,466 INFO L87 Difference]: Start difference. First operand 172 states and 316 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:26,742 INFO L93 Difference]: Finished difference Result 188 states and 338 transitions. [2022-11-26 00:29:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:26,742 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:26,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:26,743 INFO L225 Difference]: With dead ends: 188 [2022-11-26 00:29:26,743 INFO L226 Difference]: Without dead ends: 168 [2022-11-26 00:29:26,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:29:26,743 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:26,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-26 00:29:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-26 00:29:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.8323353293413174) internal successors, (306), 167 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 306 transitions. [2022-11-26 00:29:26,746 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 306 transitions. Word has length 32 [2022-11-26 00:29:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:26,747 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 306 transitions. [2022-11-26 00:29:26,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 306 transitions. [2022-11-26 00:29:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:26,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:26,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:26,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-26 00:29:26,748 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:26,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:26,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1441196806, now seen corresponding path program 85 times [2022-11-26 00:29:26,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:26,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012155846] [2022-11-26 00:29:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:26,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:27,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:27,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012155846] [2022-11-26 00:29:27,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012155846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:27,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:27,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:27,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608730564] [2022-11-26 00:29:27,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:27,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:27,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:27,025 INFO L87 Difference]: Start difference. First operand 168 states and 306 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:27,251 INFO L93 Difference]: Finished difference Result 222 states and 381 transitions. [2022-11-26 00:29:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:29:27,252 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:27,252 INFO L225 Difference]: With dead ends: 222 [2022-11-26 00:29:27,252 INFO L226 Difference]: Without dead ends: 180 [2022-11-26 00:29:27,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:29:27,253 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:27,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-26 00:29:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 164. [2022-11-26 00:29:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.7668711656441718) internal successors, (288), 163 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 288 transitions. [2022-11-26 00:29:27,256 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 288 transitions. Word has length 32 [2022-11-26 00:29:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:27,256 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 288 transitions. [2022-11-26 00:29:27,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:27,257 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 288 transitions. [2022-11-26 00:29:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:27,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:27,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:27,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-11-26 00:29:27,258 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:27,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:27,258 INFO L85 PathProgramCache]: Analyzing trace with hash -865000652, now seen corresponding path program 86 times [2022-11-26 00:29:27,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:27,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179652627] [2022-11-26 00:29:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:27,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:27,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:27,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179652627] [2022-11-26 00:29:27,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179652627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:27,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:27,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:27,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389799981] [2022-11-26 00:29:27,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:27,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:27,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:27,522 INFO L87 Difference]: Start difference. First operand 164 states and 288 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:27,745 INFO L93 Difference]: Finished difference Result 192 states and 324 transitions. [2022-11-26 00:29:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:27,745 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:27,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:27,746 INFO L225 Difference]: With dead ends: 192 [2022-11-26 00:29:27,746 INFO L226 Difference]: Without dead ends: 168 [2022-11-26 00:29:27,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:27,746 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:27,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:27,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-26 00:29:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 146. [2022-11-26 00:29:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.717241379310345) internal successors, (249), 145 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 249 transitions. [2022-11-26 00:29:27,748 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 249 transitions. Word has length 32 [2022-11-26 00:29:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:27,749 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 249 transitions. [2022-11-26 00:29:27,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 249 transitions. [2022-11-26 00:29:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:27,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:27,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:27,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-26 00:29:27,749 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:27,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1150364388, now seen corresponding path program 87 times [2022-11-26 00:29:27,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:27,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591459524] [2022-11-26 00:29:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:27,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:27,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:27,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591459524] [2022-11-26 00:29:27,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591459524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:27,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:27,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:27,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587083848] [2022-11-26 00:29:27,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:27,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:27,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:27,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:27,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:27,958 INFO L87 Difference]: Start difference. First operand 146 states and 249 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:28,199 INFO L93 Difference]: Finished difference Result 164 states and 270 transitions. [2022-11-26 00:29:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:29:28,199 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:28,200 INFO L225 Difference]: With dead ends: 164 [2022-11-26 00:29:28,200 INFO L226 Difference]: Without dead ends: 106 [2022-11-26 00:29:28,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:29:28,200 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:28,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-26 00:29:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-26 00:29:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.6857142857142857) internal successors, (177), 105 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 177 transitions. [2022-11-26 00:29:28,202 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 177 transitions. Word has length 32 [2022-11-26 00:29:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:28,202 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 177 transitions. [2022-11-26 00:29:28,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 177 transitions. [2022-11-26 00:29:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:28,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:28,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:28,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-26 00:29:28,203 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1712338712, now seen corresponding path program 88 times [2022-11-26 00:29:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:28,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515139576] [2022-11-26 00:29:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:28,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:28,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515139576] [2022-11-26 00:29:28,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515139576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:28,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:28,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:28,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104753773] [2022-11-26 00:29:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:28,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:28,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:28,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:28,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:28,452 INFO L87 Difference]: Start difference. First operand 106 states and 177 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:28,703 INFO L93 Difference]: Finished difference Result 118 states and 193 transitions. [2022-11-26 00:29:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 00:29:28,704 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:28,704 INFO L225 Difference]: With dead ends: 118 [2022-11-26 00:29:28,704 INFO L226 Difference]: Without dead ends: 102 [2022-11-26 00:29:28,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:29:28,705 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:28,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-26 00:29:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-26 00:29:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.6534653465346534) internal successors, (167), 101 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) [2022-11-26 00:29:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 167 transitions. [2022-11-26 00:29:28,707 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 167 transitions. Word has length 32 [2022-11-26 00:29:28,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:28,708 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 167 transitions. [2022-11-26 00:29:28,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 167 transitions. [2022-11-26 00:29:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:28,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:28,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:28,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-26 00:29:28,709 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:28,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:28,709 INFO L85 PathProgramCache]: Analyzing trace with hash -888031158, now seen corresponding path program 89 times [2022-11-26 00:29:28,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:28,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144959577] [2022-11-26 00:29:28,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:28,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:28,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:28,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144959577] [2022-11-26 00:29:28,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144959577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:28,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:28,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417593873] [2022-11-26 00:29:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:28,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:28,952 INFO L87 Difference]: Start difference. First operand 102 states and 167 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:29,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:29,166 INFO L93 Difference]: Finished difference Result 120 states and 192 transitions. [2022-11-26 00:29:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:29:29,166 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:29,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:29,167 INFO L225 Difference]: With dead ends: 120 [2022-11-26 00:29:29,167 INFO L226 Difference]: Without dead ends: 112 [2022-11-26 00:29:29,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:29:29,167 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:29,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:29,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-26 00:29:29,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2022-11-26 00:29:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.597938144329897) internal successors, (155), 97 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 155 transitions. [2022-11-26 00:29:29,169 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 155 transitions. Word has length 32 [2022-11-26 00:29:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:29,169 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 155 transitions. [2022-11-26 00:29:29,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:29,170 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 155 transitions. [2022-11-26 00:29:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:29,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:29,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:29,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-11-26 00:29:29,171 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:29,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1669392682, now seen corresponding path program 90 times [2022-11-26 00:29:29,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:29,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100777128] [2022-11-26 00:29:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:29,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:29,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100777128] [2022-11-26 00:29:29,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100777128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:29,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:29,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:29,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169028878] [2022-11-26 00:29:29,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:29,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:29,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:29,451 INFO L87 Difference]: Start difference. First operand 98 states and 155 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:29,744 INFO L93 Difference]: Finished difference Result 106 states and 165 transitions. [2022-11-26 00:29:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:29,744 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:29,745 INFO L225 Difference]: With dead ends: 106 [2022-11-26 00:29:29,745 INFO L226 Difference]: Without dead ends: 94 [2022-11-26 00:29:29,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:29:29,745 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:29,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-26 00:29:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-26 00:29:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.5591397849462365) internal successors, (145), 93 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 145 transitions. [2022-11-26 00:29:29,747 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 145 transitions. Word has length 32 [2022-11-26 00:29:29,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:29,747 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 145 transitions. [2022-11-26 00:29:29,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:29,747 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 145 transitions. [2022-11-26 00:29:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:29,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:29,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:29,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-11-26 00:29:29,748 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:29,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:29,748 INFO L85 PathProgramCache]: Analyzing trace with hash -174072756, now seen corresponding path program 91 times [2022-11-26 00:29:29,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:29,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147599807] [2022-11-26 00:29:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:29,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:29,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147599807] [2022-11-26 00:29:29,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147599807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:29,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:29,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:29,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454127212] [2022-11-26 00:29:29,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:29,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:29,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:29,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:29,991 INFO L87 Difference]: Start difference. First operand 94 states and 145 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:30,208 INFO L93 Difference]: Finished difference Result 94 states and 143 transitions. [2022-11-26 00:29:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:29:30,208 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:30,209 INFO L225 Difference]: With dead ends: 94 [2022-11-26 00:29:30,209 INFO L226 Difference]: Without dead ends: 68 [2022-11-26 00:29:30,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:29:30,209 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:30,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:30,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-26 00:29:30,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-26 00:29:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 67 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 102 transitions. [2022-11-26 00:29:30,211 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 102 transitions. Word has length 32 [2022-11-26 00:29:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:30,211 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 102 transitions. [2022-11-26 00:29:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 102 transitions. [2022-11-26 00:29:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:30,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:30,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:30,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-11-26 00:29:30,212 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1876239852, now seen corresponding path program 92 times [2022-11-26 00:29:30,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:30,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193310053] [2022-11-26 00:29:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:30,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:30,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:30,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193310053] [2022-11-26 00:29:30,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193310053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:30,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:30,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:30,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165610351] [2022-11-26 00:29:30,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:30,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:30,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:30,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:30,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:30,466 INFO L87 Difference]: Start difference. First operand 68 states and 102 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:30,677 INFO L93 Difference]: Finished difference Result 80 states and 118 transitions. [2022-11-26 00:29:30,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:29:30,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:30,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:30,678 INFO L225 Difference]: With dead ends: 80 [2022-11-26 00:29:30,678 INFO L226 Difference]: Without dead ends: 64 [2022-11-26 00:29:30,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:29:30,679 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:30,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:30,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-26 00:29:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-26 00:29:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 63 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2022-11-26 00:29:30,680 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 32 [2022-11-26 00:29:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:30,681 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2022-11-26 00:29:30,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2022-11-26 00:29:30,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:30,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:30,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:30,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-11-26 00:29:30,681 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1712667164, now seen corresponding path program 93 times [2022-11-26 00:29:30,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:30,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754389260] [2022-11-26 00:29:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:30,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:30,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:30,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754389260] [2022-11-26 00:29:30,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754389260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:30,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:30,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:30,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189104799] [2022-11-26 00:29:30,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:30,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:30,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:30,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:30,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:30,882 INFO L87 Difference]: Start difference. First operand 64 states and 92 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:31,045 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2022-11-26 00:29:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:29:31,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:31,046 INFO L225 Difference]: With dead ends: 68 [2022-11-26 00:29:31,046 INFO L226 Difference]: Without dead ends: 56 [2022-11-26 00:29:31,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:29:31,046 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:31,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:29:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-26 00:29:31,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-26 00:29:31,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 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) [2022-11-26 00:29:31,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2022-11-26 00:29:31,048 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 32 [2022-11-26 00:29:31,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:31,048 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2022-11-26 00:29:31,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2022-11-26 00:29:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:29:31,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:31,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:31,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-11-26 00:29:31,049 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-11-26 00:29:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2136688438, now seen corresponding path program 94 times [2022-11-26 00:29:31,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:31,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32681052] [2022-11-26 00:29:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:31,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:31,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32681052] [2022-11-26 00:29:31,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32681052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:31,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:31,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:29:31,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305746102] [2022-11-26 00:29:31,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:31,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:29:31,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:31,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:29:31,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:29:31,263 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:31,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:31,380 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-11-26 00:29:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:29:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-26 00:29:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:31,381 INFO L225 Difference]: With dead ends: 42 [2022-11-26 00:29:31,381 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:29:31,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:29:31,381 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:31,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:29:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:29:31,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:29:31,382 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) [2022-11-26 00:29:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:29:31,383 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2022-11-26 00:29:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:31,383 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:29:31,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:29:31,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:29:31,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2022-11-26 00:29:31,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2022-11-26 00:29:31,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2022-11-26 00:29:31,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2022-11-26 00:29:31,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2022-11-26 00:29:31,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2022-11-26 00:29:31,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2022-11-26 00:29:31,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2022-11-26 00:29:31,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2022-11-26 00:29:31,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2022-11-26 00:29:31,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2022-11-26 00:29:31,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (6 of 27 remaining) [2022-11-26 00:29:31,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK (5 of 27 remaining) [2022-11-26 00:29:31,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 27 remaining) [2022-11-26 00:29:31,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 27 remaining) [2022-11-26 00:29:31,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 27 remaining) [2022-11-26 00:29:31,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 27 remaining) [2022-11-26 00:29:31,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 27 remaining) [2022-11-26 00:29:31,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-11-26 00:29:31,392 INFO L445 BasicCegarLoop]: Path program histogram: [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:31,394 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-26 00:29:31,395 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:29:31,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:29:31 BasicIcfg [2022-11-26 00:29:31,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:29:31,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:29:31,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:29:31,398 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:29:31,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:07" (3/4) ... [2022-11-26 00:29:31,401 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:29:31,415 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-26 00:29:31,415 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-26 00:29:31,415 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-26 00:29:31,416 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-11-26 00:29:31,417 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread5 [2022-11-26 00:29:31,422 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2022-11-26 00:29:31,423 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-26 00:29:31,423 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-26 00:29:31,424 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:29:31,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:29:31,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:29:31,481 INFO L158 Benchmark]: Toolchain (without parser) took 85700.93ms. Allocated memory was 178.3MB in the beginning and 721.4MB in the end (delta: 543.2MB). Free memory was 148.6MB in the beginning and 658.7MB in the end (delta: -510.2MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-11-26 00:29:31,481 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:29:31,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.07ms. Allocated memory is still 178.3MB. Free memory was 148.6MB in the beginning and 132.5MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:29:31,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.70ms. Allocated memory is still 178.3MB. Free memory was 132.5MB in the beginning and 130.2MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:29:31,481 INFO L158 Benchmark]: Boogie Preprocessor took 27.81ms. Allocated memory is still 178.3MB. Free memory was 130.2MB in the beginning and 128.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:29:31,482 INFO L158 Benchmark]: RCFGBuilder took 913.24ms. Allocated memory is still 178.3MB. Free memory was 128.3MB in the beginning and 99.6MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-26 00:29:31,482 INFO L158 Benchmark]: TraceAbstraction took 84313.32ms. Allocated memory was 178.3MB in the beginning and 721.4MB in the end (delta: 543.2MB). Free memory was 99.0MB in the beginning and 661.9MB in the end (delta: -562.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:29:31,483 INFO L158 Benchmark]: Witness Printer took 82.97ms. Allocated memory is still 721.4MB. Free memory was 661.9MB in the beginning and 658.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:29:31,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.07ms. Allocated memory is still 178.3MB. Free memory was 148.6MB in the beginning and 132.5MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.70ms. Allocated memory is still 178.3MB. Free memory was 132.5MB in the beginning and 130.2MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.81ms. Allocated memory is still 178.3MB. Free memory was 130.2MB in the beginning and 128.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 913.24ms. Allocated memory is still 178.3MB. Free memory was 128.3MB in the beginning and 99.6MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 84313.32ms. Allocated memory was 178.3MB in the beginning and 721.4MB in the end (delta: 543.2MB). Free memory was 99.0MB in the beginning and 661.9MB in the end (delta: -562.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 82.97ms. Allocated memory is still 721.4MB. Free memory was 661.9MB in the beginning and 658.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.9s, 203 PlacesBefore, 75 PlacesAfterwards, 189 TransitionsBefore, 59 TransitionsAfterwards, 2702 CoEnabledTransitionPairs, 7 FixpointIterations, 100 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 174 TotalNumberOfCompositions, 6842 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3345, independent: 3218, independent conditional: 0, independent unconditional: 3218, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1632, independent: 1588, independent conditional: 0, independent unconditional: 1588, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1632, independent: 1531, independent conditional: 0, independent unconditional: 1531, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 101, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 289, independent: 125, independent conditional: 0, independent unconditional: 125, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3345, independent: 1630, independent conditional: 0, independent unconditional: 1630, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 1632, unknown conditional: 0, unknown unconditional: 1632] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 149, Positive conditional cache size: 0, Positive unconditional cache size: 149, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 168]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 139]: 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 11 procedures, 229 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 84.1s, OverallIterations: 105, TraceHistogramMax: 1, PathProgramHistogramMax: 94, EmptinessCheckTime: 0.3s, AutomataDifference: 37.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5143 SdHoareTripleChecker+Valid, 29.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5143 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 24.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2649 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39771 IncrementalHoareTripleChecker+Invalid, 42420 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2649 mSolverCounterUnsat, 0 mSDtfsCounter, 39771 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1380 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2820 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2688occurred in iteration=25, InterpolantAutomatonStates: 1341, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 105 MinimizatonAttempts, 28948 StatesRemovedByMinimization, 75 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 25.5s InterpolantComputationTime, 3079 NumberOfCodeBlocks, 3079 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 2974 ConstructedInterpolants, 0 QuantifiedInterpolants, 13158 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 105 InterpolantComputations, 105 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 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-26 00:29:31,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_424009e0-a735-47cb-8375-fec3fb039beb/bin/utaipan-ByfvJB40ur/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