./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/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_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- 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 00:11:52,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:11:52,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:11:53,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:11:53,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:11:53,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:11:53,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:11:53,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:11:53,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:11:53,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:11:53,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:11:53,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:11:53,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:11:53,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:11:53,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:11:53,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:11:53,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:11:53,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:11:53,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:11:53,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:11:53,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:11:53,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:11:53,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:11:53,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:11:53,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:11:53,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:11:53,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:11:53,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:11:53,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:11:53,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:11:53,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:11:53,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:11:53,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:11:53,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:11:53,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:11:53,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:11:53,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:11:53,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:11:53,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:11:53,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:11:53,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:11:53,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-26 00:11:53,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:11:53,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:11:53,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:11:53,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:11:53,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:11:53,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:11:53,099 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:11:53,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:11:53,100 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:11:53,100 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:11:53,101 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:11:53,101 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:11:53,101 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:11:53,101 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:11:53,102 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:11:53,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:11:53,102 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:11:53,102 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:11:53,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:11:53,103 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:11:53,103 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:11:53,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:11:53,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:11:53,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:11:53,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:11:53,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:11:53,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:11:53,105 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:11:53,105 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:11:53,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:11:53,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:11:53,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:11:53,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:11:53,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:11:53,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:11:53,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:11:53,107 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:11:53,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:11:53,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:11:53,108 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:11:53,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:11:53,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:11:53,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:11:53,108 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_e922b380-ed92-4953-bb10-b49fa6a8ce8c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2022-11-26 00:11:53,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:11:53,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:11:53,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:11:53,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:11:53,452 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:11:53,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-26 00:11:56,629 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:11:56,915 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:11:56,916 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-26 00:11:56,929 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/data/389f9024a/98571ceeb21b4d0191c1c055d0466b71/FLAG85c9d9ec5 [2022-11-26 00:11:56,946 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/data/389f9024a/98571ceeb21b4d0191c1c055d0466b71 [2022-11-26 00:11:56,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:11:56,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:11:56,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:11:56,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:11:56,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:11:56,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:11:56" (1/1) ... [2022-11-26 00:11:56,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526e63d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:56, skipping insertion in model container [2022-11-26 00:11:56,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:11:56" (1/1) ... [2022-11-26 00:11:56,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:11:57,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:11:57,185 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:11:57,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,367 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_e922b380-ed92-4953-bb10-b49fa6a8ce8c/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-26 00:11:57,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:11:57,407 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:11:57,435 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:11:57,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,475 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_e922b380-ed92-4953-bb10-b49fa6a8ce8c/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-26 00:11:57,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:11:57,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:11:57,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:11:57,534 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:11:57,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57 WrapperNode [2022-11-26 00:11:57,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:11:57,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:11:57,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:11:57,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:11:57,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,598 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2022-11-26 00:11:57,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:11:57,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:11:57,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:11:57,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:11:57,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:11:57,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:11:57,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:11:57,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:11:57,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (1/1) ... [2022-11-26 00:11:57,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:11:57,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:11:57,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:11:57,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:11:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:11:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:11:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-26 00:11:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:11:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-26 00:11:57,711 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-26 00:11:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:11:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:11:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:11:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-26 00:11:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:11:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:11:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-26 00:11:57,716 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-26 00:11:57,717 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 00:11:57,857 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:11:57,859 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:11:58,080 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:11:58,186 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:11:58,186 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:11:58,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:58 BoogieIcfgContainer [2022-11-26 00:11:58,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:11:58,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:11:58,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:11:58,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:11:58,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:11:56" (1/3) ... [2022-11-26 00:11:58,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b70faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:11:58, skipping insertion in model container [2022-11-26 00:11:58,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:57" (2/3) ... [2022-11-26 00:11:58,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b70faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:11:58, skipping insertion in model container [2022-11-26 00:11:58,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:58" (3/3) ... [2022-11-26 00:11:58,200 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-11-26 00:11:58,211 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 00:11:58,223 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:11:58,224 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-26 00:11:58,224 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:11:58,321 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-26 00:11:58,367 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:11:58,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 120 transitions, 272 flow [2022-11-26 00:11:58,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 120 transitions, 272 flow [2022-11-26 00:11:58,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 120 transitions, 272 flow [2022-11-26 00:11:58,531 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-11-26 00:11:58,531 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-26 00:11:58,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 116 events. 2/116 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-11-26 00:11:58,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 3096 [2022-11-26 00:12:03,323 INFO L134 LiptonReduction]: Checked pairs total: 9724 [2022-11-26 00:12:03,324 INFO L136 LiptonReduction]: Total number of compositions: 81 [2022-11-26 00:12:03,333 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 49 transitions, 130 flow [2022-11-26 00:12:03,672 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6190 states, 6166 states have (on average 3.7291599091793706) internal successors, (22994), 6189 states have internal predecessors, (22994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:03,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:12:03,701 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@17d61260, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:12:03,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-26 00:12:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 6190 states, 6166 states have (on average 3.7291599091793706) internal successors, (22994), 6189 states have internal predecessors, (22994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:12:03,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:03,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:12:03,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:03,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:03,738 INFO L85 PathProgramCache]: Analyzing trace with hash 400948664, now seen corresponding path program 1 times [2022-11-26 00:12:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:03,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904529611] [2022-11-26 00:12:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:03,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:04,093 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 00:12:04,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:04,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904529611] [2022-11-26 00:12:04,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904529611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:04,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:04,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:12:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483728763] [2022-11-26 00:12:04,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:04,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:12:04,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:04,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:12:04,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:12:04,157 INFO L87 Difference]: Start difference. First operand has 6190 states, 6166 states have (on average 3.7291599091793706) internal successors, (22994), 6189 states have internal predecessors, (22994), 0 states have call successors, (0), 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 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 00:12:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:04,493 INFO L93 Difference]: Finished difference Result 11114 states and 39708 transitions. [2022-11-26 00:12:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:12:04,496 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 00:12:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:04,614 INFO L225 Difference]: With dead ends: 11114 [2022-11-26 00:12:04,614 INFO L226 Difference]: Without dead ends: 11114 [2022-11-26 00:12:04,615 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 00:12:04,619 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:04,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 24 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11114 states. [2022-11-26 00:12:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11114 to 10176. [2022-11-26 00:12:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10176 states, 10155 states have (on average 3.70192023633678) internal successors, (37593), 10175 states have internal predecessors, (37593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10176 states to 10176 states and 37593 transitions. [2022-11-26 00:12:05,425 INFO L78 Accepts]: Start accepts. Automaton has 10176 states and 37593 transitions. Word has length 5 [2022-11-26 00:12:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:05,427 INFO L495 AbstractCegarLoop]: Abstraction has 10176 states and 37593 transitions. [2022-11-26 00:12:05,432 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 00:12:05,433 INFO L276 IsEmpty]: Start isEmpty. Operand 10176 states and 37593 transitions. [2022-11-26 00:12:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:12:05,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:05,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:12:05,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:12:05,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:05,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash 400948666, now seen corresponding path program 1 times [2022-11-26 00:12:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:05,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921939245] [2022-11-26 00:12:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:05,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:05,592 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 00:12:05,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:05,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921939245] [2022-11-26 00:12:05,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921939245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:05,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:05,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:12:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408019068] [2022-11-26 00:12:05,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:05,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:12:05,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:05,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:12:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:12:05,596 INFO L87 Difference]: Start difference. First operand 10176 states and 37593 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 00:12:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:05,973 INFO L93 Difference]: Finished difference Result 8558 states and 29365 transitions. [2022-11-26 00:12:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:12:05,974 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 00:12:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:06,123 INFO L225 Difference]: With dead ends: 8558 [2022-11-26 00:12:06,124 INFO L226 Difference]: Without dead ends: 8128 [2022-11-26 00:12:06,125 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 00:12:06,126 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 31 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:06,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 18 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8128 states. [2022-11-26 00:12:06,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8128 to 7776. [2022-11-26 00:12:06,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7776 states, 7765 states have (on average 3.50328396651642) internal successors, (27203), 7775 states have internal predecessors, (27203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7776 states to 7776 states and 27203 transitions. [2022-11-26 00:12:06,560 INFO L78 Accepts]: Start accepts. Automaton has 7776 states and 27203 transitions. Word has length 5 [2022-11-26 00:12:06,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:06,560 INFO L495 AbstractCegarLoop]: Abstraction has 7776 states and 27203 transitions. [2022-11-26 00:12:06,561 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 00:12:06,561 INFO L276 IsEmpty]: Start isEmpty. Operand 7776 states and 27203 transitions. [2022-11-26 00:12:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:12:06,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:06,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:06,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:12:06,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash 330176792, now seen corresponding path program 1 times [2022-11-26 00:12:06,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:06,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535840605] [2022-11-26 00:12:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:06,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:06,672 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 00:12:06,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:06,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535840605] [2022-11-26 00:12:06,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535840605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:06,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:06,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:12:06,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732260959] [2022-11-26 00:12:06,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:06,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:12:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:12:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:12:06,675 INFO L87 Difference]: Start difference. First operand 7776 states and 27203 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:07,016 INFO L93 Difference]: Finished difference Result 8220 states and 28797 transitions. [2022-11-26 00:12:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:12:07,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:12:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:07,083 INFO L225 Difference]: With dead ends: 8220 [2022-11-26 00:12:07,084 INFO L226 Difference]: Without dead ends: 7668 [2022-11-26 00:12:07,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:12:07,092 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:07,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 32 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:07,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7668 states. [2022-11-26 00:12:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7668 to 6052. [2022-11-26 00:12:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6052 states, 6043 states have (on average 3.582161178222737) internal successors, (21647), 6051 states have internal predecessors, (21647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6052 states to 6052 states and 21647 transitions. [2022-11-26 00:12:07,463 INFO L78 Accepts]: Start accepts. Automaton has 6052 states and 21647 transitions. Word has length 10 [2022-11-26 00:12:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:07,464 INFO L495 AbstractCegarLoop]: Abstraction has 6052 states and 21647 transitions. [2022-11-26 00:12:07,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6052 states and 21647 transitions. [2022-11-26 00:12:07,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:12:07,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:07,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:07,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:12:07,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash -536567853, now seen corresponding path program 1 times [2022-11-26 00:12:07,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:07,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496206278] [2022-11-26 00:12:07,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:07,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:07,696 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 00:12:07,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:07,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496206278] [2022-11-26 00:12:07,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496206278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:07,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:07,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:12:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542046875] [2022-11-26 00:12:07,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:07,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:12:07,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:12:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:12:07,699 INFO L87 Difference]: Start difference. First operand 6052 states and 21647 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:07,909 INFO L93 Difference]: Finished difference Result 5774 states and 19927 transitions. [2022-11-26 00:12:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:12:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-26 00:12:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:07,950 INFO L225 Difference]: With dead ends: 5774 [2022-11-26 00:12:07,950 INFO L226 Difference]: Without dead ends: 5774 [2022-11-26 00:12:07,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:12:07,951 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:07,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 18 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5774 states. [2022-11-26 00:12:08,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5774 to 3600. [2022-11-26 00:12:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3592 states have (on average 3.3285077951002227) internal successors, (11956), 3599 states have internal predecessors, (11956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 11956 transitions. [2022-11-26 00:12:08,310 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 11956 transitions. Word has length 15 [2022-11-26 00:12:08,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:08,310 INFO L495 AbstractCegarLoop]: Abstraction has 3600 states and 11956 transitions. [2022-11-26 00:12:08,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 11956 transitions. [2022-11-26 00:12:08,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:12:08,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:08,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:08,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:12:08,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:08,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:08,315 INFO L85 PathProgramCache]: Analyzing trace with hash 546697126, now seen corresponding path program 1 times [2022-11-26 00:12:08,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:08,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517881930] [2022-11-26 00:12:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:08,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:08,414 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 00:12:08,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:08,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517881930] [2022-11-26 00:12:08,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517881930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:08,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:08,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:12:08,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746146579] [2022-11-26 00:12:08,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:08,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:12:08,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:12:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:12:08,416 INFO L87 Difference]: Start difference. First operand 3600 states and 11956 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:08,599 INFO L93 Difference]: Finished difference Result 3576 states and 10734 transitions. [2022-11-26 00:12:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:12:08,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-11-26 00:12:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:08,613 INFO L225 Difference]: With dead ends: 3576 [2022-11-26 00:12:08,614 INFO L226 Difference]: Without dead ends: 3326 [2022-11-26 00:12:08,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:12:08,615 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 77 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:08,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 40 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2022-11-26 00:12:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3250. [2022-11-26 00:12:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 3232 states have (on average 3.0841584158415842) internal successors, (9968), 3249 states have internal predecessors, (9968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 9968 transitions. [2022-11-26 00:12:08,701 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 9968 transitions. Word has length 16 [2022-11-26 00:12:08,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:08,702 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 9968 transitions. [2022-11-26 00:12:08,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 9968 transitions. [2022-11-26 00:12:08,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:12:08,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:08,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:08,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:12:08,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:08,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:08,706 INFO L85 PathProgramCache]: Analyzing trace with hash 546697128, now seen corresponding path program 1 times [2022-11-26 00:12:08,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:08,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195351176] [2022-11-26 00:12:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:08,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:08,810 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 00:12:08,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:08,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195351176] [2022-11-26 00:12:08,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195351176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:08,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:08,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:12:08,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727703451] [2022-11-26 00:12:08,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:08,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:12:08,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:08,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:12:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:12:08,812 INFO L87 Difference]: Start difference. First operand 3250 states and 9968 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:08,984 INFO L93 Difference]: Finished difference Result 3650 states and 11074 transitions. [2022-11-26 00:12:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:12:08,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-11-26 00:12:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:08,998 INFO L225 Difference]: With dead ends: 3650 [2022-11-26 00:12:08,998 INFO L226 Difference]: Without dead ends: 3030 [2022-11-26 00:12:08,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:12:09,003 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:09,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 52 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:09,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2022-11-26 00:12:09,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3030. [2022-11-26 00:12:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3016 states have (on average 3.102785145888594) internal successors, (9358), 3029 states have internal predecessors, (9358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 9358 transitions. [2022-11-26 00:12:09,175 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 9358 transitions. Word has length 16 [2022-11-26 00:12:09,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:09,176 INFO L495 AbstractCegarLoop]: Abstraction has 3030 states and 9358 transitions. [2022-11-26 00:12:09,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 9358 transitions. [2022-11-26 00:12:09,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:12:09,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:09,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:09,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:12:09,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:09,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1716272258, now seen corresponding path program 1 times [2022-11-26 00:12:09,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:09,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831992246] [2022-11-26 00:12:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:09,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:12:09,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:09,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831992246] [2022-11-26 00:12:09,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831992246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:09,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:09,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:12:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134232479] [2022-11-26 00:12:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:09,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:12:09,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:12:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:12:09,298 INFO L87 Difference]: Start difference. First operand 3030 states and 9358 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:09,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:09,476 INFO L93 Difference]: Finished difference Result 3544 states and 10715 transitions. [2022-11-26 00:12:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:12:09,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-11-26 00:12:09,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:09,491 INFO L225 Difference]: With dead ends: 3544 [2022-11-26 00:12:09,492 INFO L226 Difference]: Without dead ends: 3544 [2022-11-26 00:12:09,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:12:09,493 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:09,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 72 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2022-11-26 00:12:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3190. [2022-11-26 00:12:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 3180 states have (on average 3.1188679245283017) internal successors, (9918), 3189 states have internal predecessors, (9918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 9918 transitions. [2022-11-26 00:12:09,650 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 9918 transitions. Word has length 16 [2022-11-26 00:12:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:09,650 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 9918 transitions. [2022-11-26 00:12:09,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 9918 transitions. [2022-11-26 00:12:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:12:09,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:09,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:09,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:12:09,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1716272260, now seen corresponding path program 1 times [2022-11-26 00:12:09,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:09,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141026811] [2022-11-26 00:12:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:09,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:09,741 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 00:12:09,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:09,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141026811] [2022-11-26 00:12:09,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141026811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:09,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:09,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:12:09,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550621823] [2022-11-26 00:12:09,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:09,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:12:09,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:09,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:12:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:12:09,744 INFO L87 Difference]: Start difference. First operand 3190 states and 9918 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:09,905 INFO L93 Difference]: Finished difference Result 3310 states and 10102 transitions. [2022-11-26 00:12:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:12:09,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-11-26 00:12:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:09,917 INFO L225 Difference]: With dead ends: 3310 [2022-11-26 00:12:09,918 INFO L226 Difference]: Without dead ends: 2630 [2022-11-26 00:12:09,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:12:09,920 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 98 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:09,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 48 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2022-11-26 00:12:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2630. [2022-11-26 00:12:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2622 states have (on average 3.143401983218917) internal successors, (8242), 2629 states have internal predecessors, (8242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 8242 transitions. [2022-11-26 00:12:10,009 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 8242 transitions. Word has length 16 [2022-11-26 00:12:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:10,009 INFO L495 AbstractCegarLoop]: Abstraction has 2630 states and 8242 transitions. [2022-11-26 00:12:10,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 8242 transitions. [2022-11-26 00:12:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-26 00:12:10,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:10,018 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] [2022-11-26 00:12:10,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:12:10,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:10,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1741403383, now seen corresponding path program 1 times [2022-11-26 00:12:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:10,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363517415] [2022-11-26 00:12:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:10,122 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 00:12:10,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:10,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363517415] [2022-11-26 00:12:10,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363517415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:10,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:10,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:12:10,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523518974] [2022-11-26 00:12:10,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:10,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:12:10,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:10,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:12:10,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:12:10,126 INFO L87 Difference]: Start difference. First operand 2630 states and 8242 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:10,280 INFO L93 Difference]: Finished difference Result 2580 states and 8118 transitions. [2022-11-26 00:12:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:12:10,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-26 00:12:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:10,292 INFO L225 Difference]: With dead ends: 2580 [2022-11-26 00:12:10,292 INFO L226 Difference]: Without dead ends: 2130 [2022-11-26 00:12:10,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:12:10,294 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:10,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 55 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:10,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2022-11-26 00:12:10,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 2130. [2022-11-26 00:12:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 2126 states have (on average 3.145813734713076) internal successors, (6688), 2129 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 6688 transitions. [2022-11-26 00:12:10,375 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 6688 transitions. Word has length 21 [2022-11-26 00:12:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:10,375 INFO L495 AbstractCegarLoop]: Abstraction has 2130 states and 6688 transitions. [2022-11-26 00:12:10,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 6688 transitions. [2022-11-26 00:12:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-26 00:12:10,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:10,383 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] [2022-11-26 00:12:10,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:12:10,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-26 00:12:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:10,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1744712522, now seen corresponding path program 1 times [2022-11-26 00:12:10,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:10,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286176869] [2022-11-26 00:12:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:10,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:10,579 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 00:12:10,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:10,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286176869] [2022-11-26 00:12:10,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286176869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:10,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:10,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:12:10,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269446582] [2022-11-26 00:12:10,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:10,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:12:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:10,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:12:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:12:10,582 INFO L87 Difference]: Start difference. First operand 2130 states and 6688 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:10,718 INFO L93 Difference]: Finished difference Result 2090 states and 6588 transitions. [2022-11-26 00:12:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:12:10,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-26 00:12:10,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:10,720 INFO L225 Difference]: With dead ends: 2090 [2022-11-26 00:12:10,720 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:12:10,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:12:10,721 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:10,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 55 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:12:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:12:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:12:10,722 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 00:12:10,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:12:10,723 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-11-26 00:12:10,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:10,723 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:12:10,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:12:10,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:12:10,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-11-26 00:12:10,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-11-26 00:12:10,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-11-26 00:12:10,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-11-26 00:12:10,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2022-11-26 00:12:10,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2022-11-26 00:12:10,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2022-11-26 00:12:10,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2022-11-26 00:12:10,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-11-26 00:12:10,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-11-26 00:12:10,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2022-11-26 00:12:10,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2022-11-26 00:12:10,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-11-26 00:12:10,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-11-26 00:12:10,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-11-26 00:12:10,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-11-26 00:12:10,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:12:10,734 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:10,739 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-26 00:12:10,740 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:12:10,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:12:10 BasicIcfg [2022-11-26 00:12:10,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:12:10,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:12:10,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:12:10,744 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:12:10,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:58" (3/4) ... [2022-11-26 00:12:10,747 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:12:10,754 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2022-11-26 00:12:10,754 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2022-11-26 00:12:10,759 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-26 00:12:10,760 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-26 00:12:10,760 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-26 00:12:10,760 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:12:10,800 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:12:10,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:12:10,801 INFO L158 Benchmark]: Toolchain (without parser) took 13851.12ms. Allocated memory was 172.0MB in the beginning and 1.1GB in the end (delta: 885.0MB). Free memory was 131.7MB in the beginning and 826.6MB in the end (delta: -694.9MB). Peak memory consumption was 193.2MB. Max. memory is 16.1GB. [2022-11-26 00:12:10,802 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 172.0MB. Free memory was 140.6MB in the beginning and 140.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:12:10,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.21ms. Allocated memory is still 172.0MB. Free memory was 131.1MB in the beginning and 109.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-26 00:12:10,803 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.09ms. Allocated memory is still 172.0MB. Free memory was 109.7MB in the beginning and 107.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:12:10,803 INFO L158 Benchmark]: Boogie Preprocessor took 26.80ms. Allocated memory is still 172.0MB. Free memory was 107.4MB in the beginning and 106.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:12:10,803 INFO L158 Benchmark]: RCFGBuilder took 562.98ms. Allocated memory is still 172.0MB. Free memory was 106.0MB in the beginning and 87.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-26 00:12:10,804 INFO L158 Benchmark]: TraceAbstraction took 12550.26ms. Allocated memory was 172.0MB in the beginning and 1.1GB in the end (delta: 885.0MB). Free memory was 86.6MB in the beginning and 829.7MB in the end (delta: -743.2MB). Peak memory consumption was 145.0MB. Max. memory is 16.1GB. [2022-11-26 00:12:10,805 INFO L158 Benchmark]: Witness Printer took 57.26ms. Allocated memory is still 1.1GB. Free memory was 828.7MB in the beginning and 826.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:12:10,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 172.0MB. Free memory was 140.6MB in the beginning and 140.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.21ms. Allocated memory is still 172.0MB. Free memory was 131.1MB in the beginning and 109.7MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.09ms. Allocated memory is still 172.0MB. Free memory was 109.7MB in the beginning and 107.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.80ms. Allocated memory is still 172.0MB. Free memory was 107.4MB in the beginning and 106.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 562.98ms. Allocated memory is still 172.0MB. Free memory was 106.0MB in the beginning and 87.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12550.26ms. Allocated memory was 172.0MB in the beginning and 1.1GB in the end (delta: 885.0MB). Free memory was 86.6MB in the beginning and 829.7MB in the end (delta: -743.2MB). Peak memory consumption was 145.0MB. Max. memory is 16.1GB. * Witness Printer took 57.26ms. Allocated memory is still 1.1GB. Free memory was 828.7MB in the beginning and 826.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 131 PlacesBefore, 62 PlacesAfterwards, 120 TransitionsBefore, 49 TransitionsAfterwards, 3096 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 9724 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5328, independent: 5095, independent conditional: 0, independent unconditional: 5095, dependent: 233, dependent conditional: 0, dependent unconditional: 233, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2027, independent: 1970, independent conditional: 0, independent unconditional: 1970, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2027, independent: 1945, independent conditional: 0, independent unconditional: 1945, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 82, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 214, independent: 87, independent conditional: 0, independent unconditional: 87, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5328, independent: 3125, independent conditional: 0, independent unconditional: 3125, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 2027, unknown conditional: 0, unknown unconditional: 2027] , Statistics on independence cache: Total cache size (in pairs): 549, Positive cache size: 516, Positive conditional cache size: 0, Positive unconditional cache size: 516, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, 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: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 148 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 12.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 579 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 579 mSDsluCounter, 414 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 255 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1104 IncrementalHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 159 mSDtfsCounter, 1104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10176occurred in iteration=1, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 5510 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-26 00:12:10,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e922b380-ed92-4953-bb10-b49fa6a8ce8c/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