./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/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_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh --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-2329fc7 [2022-12-14 14:00:29,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:00:29,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:00:30,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:00:30,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:00:30,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:00:30,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:00:30,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:00:30,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:00:30,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:00:30,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:00:30,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:00:30,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:00:30,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:00:30,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:00:30,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:00:30,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:00:30,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:00:30,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:00:30,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:00:30,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:00:30,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:00:30,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:00:30,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:00:30,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:00:30,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:00:30,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:00:30,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:00:30,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:00:30,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:00:30,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:00:30,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:00:30,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:00:30,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:00:30,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:00:30,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:00:30,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:00:30,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:00:30,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:00:30,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:00:30,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:00:30,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 14:00:30,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:00:30,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:00:30,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:00:30,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:00:30,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:00:30,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:00:30,064 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:00:30,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:00:30,065 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:00:30,065 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:00:30,065 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:00:30,065 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:00:30,065 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:00:30,066 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:00:30,066 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:00:30,066 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:00:30,066 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:00:30,066 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:00:30,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:00:30,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:00:30,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:00:30,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:00:30,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:00:30,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:00:30,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:00:30,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:00:30,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:00:30,069 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:00:30,069 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:00:30,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:00:30,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:00:30,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:00:30,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:00:30,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:00:30,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:00:30,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:00:30,070 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:00:30,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:00:30,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:00:30,071 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:00:30,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:00:30,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:00:30,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:00:30,071 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_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2022-12-14 14:00:30,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:00:30,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:00:30,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:00:30,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:00:30,284 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:00:30,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-12-14 14:00:32,811 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:00:33,045 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:00:33,046 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-12-14 14:00:33,058 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/data/d0edba020/1f6929d89cb946b5b0b3fd823e63735f/FLAG2253a8b3b [2022-12-14 14:00:33,386 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/data/d0edba020/1f6929d89cb946b5b0b3fd823e63735f [2022-12-14 14:00:33,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:00:33,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:00:33,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:00:33,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:00:33,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:00:33,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7affba3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33, skipping insertion in model container [2022-12-14 14:00:33,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:00:33,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:00:33,545 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:00:33,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,637 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_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-12-14 14:00:33,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:00:33,651 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:00:33,662 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:00:33,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,680 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_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-12-14 14:00:33,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:00:33,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:00:33,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:00:33,706 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:00:33,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33 WrapperNode [2022-12-14 14:00:33,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:00:33,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:00:33,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:00:33,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:00:33,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,738 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2022-12-14 14:00:33,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:00:33,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:00:33,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:00:33,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:00:33,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:00:33,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:00:33,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:00:33,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:00:33,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (1/1) ... [2022-12-14 14:00:33,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:00:33,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:00:33,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:00:33,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:00:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:00:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:00:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 14:00:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:00:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-12-14 14:00:33,816 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-12-14 14:00:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:00:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:00:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:00:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 14:00:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:00:33,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:00:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-12-14 14:00:33,817 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-12-14 14:00:33,818 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 14:00:33,924 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:00:33,926 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:00:34,069 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:00:34,110 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:00:34,110 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 14:00:34,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:00:34 BoogieIcfgContainer [2022-12-14 14:00:34,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:00:34,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:00:34,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:00:34,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:00:34,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:00:33" (1/3) ... [2022-12-14 14:00:34,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb6ec4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:00:34, skipping insertion in model container [2022-12-14 14:00:34,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:00:33" (2/3) ... [2022-12-14 14:00:34,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb6ec4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:00:34, skipping insertion in model container [2022-12-14 14:00:34,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:00:34" (3/3) ... [2022-12-14 14:00:34,118 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-12-14 14:00:34,123 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 14:00:34,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:00:34,131 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 14:00:34,131 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 14:00:34,184 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 14:00:34,207 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 14:00:34,217 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 120 transitions, 272 flow [2022-12-14 14:00:34,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 120 transitions, 272 flow [2022-12-14 14:00:34,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 120 transitions, 272 flow [2022-12-14 14:00:34,266 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-12-14 14:00:34,266 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-14 14:00:34,271 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. [2022-12-14 14:00:34,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 3096 [2022-12-14 14:00:36,728 INFO L134 LiptonReduction]: Checked pairs total: 9672 [2022-12-14 14:00:36,728 INFO L136 LiptonReduction]: Total number of compositions: 79 [2022-12-14 14:00:36,734 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 49 transitions, 130 flow [2022-12-14 14:00:36,910 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) [2022-12-14 14:00:36,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:00:36,933 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;@5aab7288, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:00:36,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-12-14 14:00:36,952 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) [2022-12-14 14:00:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 14:00:36,957 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:36,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 14:00:36,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:36,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:36,962 INFO L85 PathProgramCache]: Analyzing trace with hash 399103530, now seen corresponding path program 1 times [2022-12-14 14:00:36,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:36,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815429421] [2022-12-14 14:00:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:36,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:37,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:37,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815429421] [2022-12-14 14:00:37,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815429421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:37,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:37,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:00:37,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877340778] [2022-12-14 14:00:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:37,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:00:37,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:37,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:00:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:00:37,185 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) [2022-12-14 14:00:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:37,405 INFO L93 Difference]: Finished difference Result 11192 states and 38059 transitions. [2022-12-14 14:00:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:00:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 14:00:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:37,470 INFO L225 Difference]: With dead ends: 11192 [2022-12-14 14:00:37,470 INFO L226 Difference]: Without dead ends: 10762 [2022-12-14 14:00:37,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:00:37,473 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:37,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 24 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2022-12-14 14:00:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 9658. [2022-12-14 14:00:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9658 states, 9638 states have (on average 3.5591409006017845) internal successors, (34303), 9657 states have internal predecessors, (34303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9658 states to 9658 states and 34303 transitions. [2022-12-14 14:00:37,857 INFO L78 Accepts]: Start accepts. Automaton has 9658 states and 34303 transitions. Word has length 5 [2022-12-14 14:00:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:37,857 INFO L495 AbstractCegarLoop]: Abstraction has 9658 states and 34303 transitions. [2022-12-14 14:00:37,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9658 states and 34303 transitions. [2022-12-14 14:00:37,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 14:00:37,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:37,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:37,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:00:37,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:37,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash -486950970, now seen corresponding path program 1 times [2022-12-14 14:00:37,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:37,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076828256] [2022-12-14 14:00:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:37,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:37,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:37,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076828256] [2022-12-14 14:00:37,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076828256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:37,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:37,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:00:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329656084] [2022-12-14 14:00:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:37,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:00:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:37,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:00:37,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:00:37,956 INFO L87 Difference]: Start difference. First operand 9658 states and 34303 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) [2022-12-14 14:00:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:38,119 INFO L93 Difference]: Finished difference Result 5426 states and 16452 transitions. [2022-12-14 14:00:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:00:38,120 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 [2022-12-14 14:00:38,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:38,150 INFO L225 Difference]: With dead ends: 5426 [2022-12-14 14:00:38,150 INFO L226 Difference]: Without dead ends: 5426 [2022-12-14 14:00:38,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:00:38,151 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:38,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 28 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2022-12-14 14:00:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 4970. [2022-12-14 14:00:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 4938 states have (on average 3.1607938436614016) internal successors, (15608), 4969 states have internal predecessors, (15608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:38,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 15608 transitions. [2022-12-14 14:00:38,320 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 15608 transitions. Word has length 10 [2022-12-14 14:00:38,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:38,321 INFO L495 AbstractCegarLoop]: Abstraction has 4970 states and 15608 transitions. [2022-12-14 14:00:38,321 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) [2022-12-14 14:00:38,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 15608 transitions. [2022-12-14 14:00:38,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 14:00:38,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:38,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:38,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:00:38,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:38,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:38,323 INFO L85 PathProgramCache]: Analyzing trace with hash -486950969, now seen corresponding path program 1 times [2022-12-14 14:00:38,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:38,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296088199] [2022-12-14 14:00:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:38,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:38,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:38,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296088199] [2022-12-14 14:00:38,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296088199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:38,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:38,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:00:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456471572] [2022-12-14 14:00:38,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:38,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:00:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:38,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:00:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:00:38,425 INFO L87 Difference]: Start difference. First operand 4970 states and 15608 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) [2022-12-14 14:00:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:38,529 INFO L93 Difference]: Finished difference Result 4514 states and 13578 transitions. [2022-12-14 14:00:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:00:38,529 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 [2022-12-14 14:00:38,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:38,554 INFO L225 Difference]: With dead ends: 4514 [2022-12-14 14:00:38,554 INFO L226 Difference]: Without dead ends: 3962 [2022-12-14 14:00:38,555 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 [2022-12-14 14:00:38,556 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:38,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 26 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:38,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2022-12-14 14:00:38,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3704. [2022-12-14 14:00:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3680 states have (on average 3.1793478260869565) internal successors, (11700), 3703 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 11700 transitions. [2022-12-14 14:00:38,665 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 11700 transitions. Word has length 10 [2022-12-14 14:00:38,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:38,666 INFO L495 AbstractCegarLoop]: Abstraction has 3704 states and 11700 transitions. [2022-12-14 14:00:38,666 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) [2022-12-14 14:00:38,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 11700 transitions. [2022-12-14 14:00:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 14:00:38,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:38,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:38,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:00:38,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:38,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2131140447, now seen corresponding path program 1 times [2022-12-14 14:00:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:38,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903028670] [2022-12-14 14:00:38,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:38,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:38,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:38,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903028670] [2022-12-14 14:00:38,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903028670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:38,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:38,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:00:38,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012392121] [2022-12-14 14:00:38,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:38,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:00:38,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:00:38,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:00:38,734 INFO L87 Difference]: Start difference. First operand 3704 states and 11700 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) [2022-12-14 14:00:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:38,825 INFO L93 Difference]: Finished difference Result 3600 states and 10926 transitions. [2022-12-14 14:00:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:00:38,826 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 [2022-12-14 14:00:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:38,834 INFO L225 Difference]: With dead ends: 3600 [2022-12-14 14:00:38,835 INFO L226 Difference]: Without dead ends: 3600 [2022-12-14 14:00:38,835 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 [2022-12-14 14:00:38,835 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:38,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 17 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2022-12-14 14:00:38,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3600. [2022-12-14 14:00:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3580 states have (on average 3.05195530726257) internal successors, (10926), 3599 states have internal predecessors, (10926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 10926 transitions. [2022-12-14 14:00:38,921 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 10926 transitions. Word has length 15 [2022-12-14 14:00:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:38,922 INFO L495 AbstractCegarLoop]: Abstraction has 3600 states and 10926 transitions. [2022-12-14 14:00:38,922 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) [2022-12-14 14:00:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 10926 transitions. [2022-12-14 14:00:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:00:38,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:38,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:38,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:00:38,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2115578885, now seen corresponding path program 1 times [2022-12-14 14:00:38,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:38,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900006615] [2022-12-14 14:00:38,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:39,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:39,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900006615] [2022-12-14 14:00:39,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900006615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:39,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:39,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:00:39,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847425355] [2022-12-14 14:00:39,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:39,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:00:39,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:39,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:00:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:00:39,017 INFO L87 Difference]: Start difference. First operand 3600 states and 10926 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) [2022-12-14 14:00:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:39,165 INFO L93 Difference]: Finished difference Result 3576 states and 10734 transitions. [2022-12-14 14:00:39,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:00:39,165 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 [2022-12-14 14:00:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:39,179 INFO L225 Difference]: With dead ends: 3576 [2022-12-14 14:00:39,179 INFO L226 Difference]: Without dead ends: 3326 [2022-12-14 14:00:39,179 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 [2022-12-14 14:00:39,180 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 88 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:39,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 53 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2022-12-14 14:00:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3250. [2022-12-14 14:00:39,251 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) [2022-12-14 14:00:39,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 9968 transitions. [2022-12-14 14:00:39,262 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 9968 transitions. Word has length 16 [2022-12-14 14:00:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:39,263 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 9968 transitions. [2022-12-14 14:00:39,263 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) [2022-12-14 14:00:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 9968 transitions. [2022-12-14 14:00:39,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:00:39,265 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:39,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:39,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:00:39,265 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:39,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2115578884, now seen corresponding path program 1 times [2022-12-14 14:00:39,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:39,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239800858] [2022-12-14 14:00:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:39,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:39,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:39,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239800858] [2022-12-14 14:00:39,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239800858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:39,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:39,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:00:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133861411] [2022-12-14 14:00:39,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:39,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:00:39,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:00:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:00:39,360 INFO L87 Difference]: Start difference. First operand 3250 states and 9968 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) [2022-12-14 14:00:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:39,498 INFO L93 Difference]: Finished difference Result 3726 states and 11220 transitions. [2022-12-14 14:00:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:00:39,498 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 [2022-12-14 14:00:39,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:39,510 INFO L225 Difference]: With dead ends: 3726 [2022-12-14 14:00:39,510 INFO L226 Difference]: Without dead ends: 3106 [2022-12-14 14:00:39,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:39,511 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 92 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:39,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 57 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:39,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-12-14 14:00:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 3030. [2022-12-14 14:00:39,579 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) [2022-12-14 14:00:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 9358 transitions. [2022-12-14 14:00:39,589 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 9358 transitions. Word has length 16 [2022-12-14 14:00:39,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:39,589 INFO L495 AbstractCegarLoop]: Abstraction has 3030 states and 9358 transitions. [2022-12-14 14:00:39,589 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) [2022-12-14 14:00:39,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 9358 transitions. [2022-12-14 14:00:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:00:39,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:39,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:39,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:00:39,593 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:39,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2045097189, now seen corresponding path program 1 times [2022-12-14 14:00:39,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:39,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975558042] [2022-12-14 14:00:39,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:39,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:39,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:39,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975558042] [2022-12-14 14:00:39,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975558042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:39,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:39,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:00:39,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767190728] [2022-12-14 14:00:39,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:39,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:00:39,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:00:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:00:39,665 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) [2022-12-14 14:00:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:39,783 INFO L93 Difference]: Finished difference Result 2950 states and 9082 transitions. [2022-12-14 14:00:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:00:39,784 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 [2022-12-14 14:00:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:39,790 INFO L225 Difference]: With dead ends: 2950 [2022-12-14 14:00:39,790 INFO L226 Difference]: Without dead ends: 2750 [2022-12-14 14:00:39,790 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 [2022-12-14 14:00:39,791 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:39,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 51 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:39,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2022-12-14 14:00:39,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2750. [2022-12-14 14:00:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2738 states have (on average 3.1344046749452157) internal successors, (8582), 2749 states have internal predecessors, (8582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:39,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 8582 transitions. [2022-12-14 14:00:39,839 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 8582 transitions. Word has length 16 [2022-12-14 14:00:39,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:39,840 INFO L495 AbstractCegarLoop]: Abstraction has 2750 states and 8582 transitions. [2022-12-14 14:00:39,840 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) [2022-12-14 14:00:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 8582 transitions. [2022-12-14 14:00:39,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:00:39,842 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:39,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:39,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:00:39,842 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:39,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:39,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2045097187, now seen corresponding path program 1 times [2022-12-14 14:00:39,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:39,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700165417] [2022-12-14 14:00:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:39,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:39,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:39,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700165417] [2022-12-14 14:00:39,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700165417] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:39,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:39,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:00:39,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112367408] [2022-12-14 14:00:39,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:39,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:00:39,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:39,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:00:39,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:00:39,906 INFO L87 Difference]: Start difference. First operand 2750 states and 8582 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) [2022-12-14 14:00:40,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:40,000 INFO L93 Difference]: Finished difference Result 3110 states and 9602 transitions. [2022-12-14 14:00:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:00:40,000 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 [2022-12-14 14:00:40,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:40,006 INFO L225 Difference]: With dead ends: 3110 [2022-12-14 14:00:40,006 INFO L226 Difference]: Without dead ends: 2630 [2022-12-14 14:00:40,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:40,007 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:40,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 65 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2022-12-14 14:00:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2630. [2022-12-14 14:00:40,050 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) [2022-12-14 14:00:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 8242 transitions. [2022-12-14 14:00:40,055 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 8242 transitions. Word has length 16 [2022-12-14 14:00:40,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:40,055 INFO L495 AbstractCegarLoop]: Abstraction has 2630 states and 8242 transitions. [2022-12-14 14:00:40,055 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) [2022-12-14 14:00:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 8242 transitions. [2022-12-14 14:00:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 14:00:40,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:40,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:40,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 14:00:40,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:40,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1226388574, now seen corresponding path program 1 times [2022-12-14 14:00:40,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:40,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967541878] [2022-12-14 14:00:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:40,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:40,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:40,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967541878] [2022-12-14 14:00:40,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967541878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:40,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:40,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:00:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672277367] [2022-12-14 14:00:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:40,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:00:40,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:00:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:00:40,113 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) [2022-12-14 14:00:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:40,195 INFO L93 Difference]: Finished difference Result 2580 states and 8118 transitions. [2022-12-14 14:00:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:00:40,195 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 [2022-12-14 14:00:40,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:40,201 INFO L225 Difference]: With dead ends: 2580 [2022-12-14 14:00:40,201 INFO L226 Difference]: Without dead ends: 2130 [2022-12-14 14:00:40,201 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 [2022-12-14 14:00:40,202 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 86 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:40,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 55 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2022-12-14 14:00:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 2130. [2022-12-14 14:00:40,229 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) [2022-12-14 14:00:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 6688 transitions. [2022-12-14 14:00:40,233 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 6688 transitions. Word has length 21 [2022-12-14 14:00:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:40,234 INFO L495 AbstractCegarLoop]: Abstraction has 2130 states and 6688 transitions. [2022-12-14 14:00:40,234 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) [2022-12-14 14:00:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 6688 transitions. [2022-12-14 14:00:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 14:00:40,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:40,237 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] [2022-12-14 14:00:40,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 14:00:40,237 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 14:00:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1226371666, now seen corresponding path program 1 times [2022-12-14 14:00:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:40,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493994496] [2022-12-14 14:00:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:40,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:40,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493994496] [2022-12-14 14:00:40,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493994496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:40,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:40,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:00:40,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451028661] [2022-12-14 14:00:40,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:40,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:00:40,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:00:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:00:40,294 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) [2022-12-14 14:00:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:40,362 INFO L93 Difference]: Finished difference Result 2090 states and 6588 transitions. [2022-12-14 14:00:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:00:40,362 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 [2022-12-14 14:00:40,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:40,362 INFO L225 Difference]: With dead ends: 2090 [2022-12-14 14:00:40,362 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 14:00:40,362 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 [2022-12-14 14:00:40,363 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:40,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 50 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 14:00:40,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 14:00:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 14:00:40,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-12-14 14:00:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:40,364 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 14:00:40,364 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) [2022-12-14 14:00:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 14:00:40,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 14:00:40,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-12-14 14:00:40,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-12-14 14:00:40,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-12-14 14:00:40,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-12-14 14:00:40,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2022-12-14 14:00:40,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2022-12-14 14:00:40,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2022-12-14 14:00:40,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2022-12-14 14:00:40,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-12-14 14:00:40,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-12-14 14:00:40,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2022-12-14 14:00:40,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2022-12-14 14:00:40,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-12-14 14:00:40,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-12-14 14:00:40,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-12-14 14:00:40,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-12-14 14:00:40,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 14:00:40,372 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:40,376 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 14:00:40,376 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:00:40,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:00:40 BasicIcfg [2022-12-14 14:00:40,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:00:40,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:00:40,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:00:40,379 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:00:40,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:00:34" (3/4) ... [2022-12-14 14:00:40,382 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 14:00:40,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2022-12-14 14:00:40,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2022-12-14 14:00:40,391 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-12-14 14:00:40,391 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 14:00:40,391 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 14:00:40,391 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 14:00:40,416 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:00:40,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:00:40,417 INFO L158 Benchmark]: Toolchain (without parser) took 7027.19ms. Allocated memory was 142.6MB in the beginning and 364.9MB in the end (delta: 222.3MB). Free memory was 105.8MB in the beginning and 139.6MB in the end (delta: -33.8MB). Peak memory consumption was 189.4MB. Max. memory is 16.1GB. [2022-12-14 14:00:40,417 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 76.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:00:40,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.47ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 84.2MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 14:00:40,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.94ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 81.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:00:40,418 INFO L158 Benchmark]: Boogie Preprocessor took 17.56ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 80.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:00:40,418 INFO L158 Benchmark]: RCFGBuilder took 355.46ms. Allocated memory is still 142.6MB. Free memory was 80.6MB in the beginning and 111.3MB in the end (delta: -30.7MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-12-14 14:00:40,418 INFO L158 Benchmark]: TraceAbstraction took 6265.23ms. Allocated memory was 142.6MB in the beginning and 364.9MB in the end (delta: 222.3MB). Free memory was 110.6MB in the beginning and 142.7MB in the end (delta: -32.1MB). Peak memory consumption was 189.8MB. Max. memory is 16.1GB. [2022-12-14 14:00:40,418 INFO L158 Benchmark]: Witness Printer took 37.62ms. Allocated memory is still 364.9MB. Free memory was 142.7MB in the beginning and 139.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:00:40,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 76.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.47ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 84.2MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.94ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 81.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.56ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 80.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 355.46ms. Allocated memory is still 142.6MB. Free memory was 80.6MB in the beginning and 111.3MB in the end (delta: -30.7MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6265.23ms. Allocated memory was 142.6MB in the beginning and 364.9MB in the end (delta: 222.3MB). Free memory was 110.6MB in the beginning and 142.7MB in the end (delta: -32.1MB). Peak memory consumption was 189.8MB. Max. memory is 16.1GB. * Witness Printer took 37.62ms. Allocated memory is still 364.9MB. Free memory was 142.7MB in the beginning and 139.6MB in the end (delta: 3.1MB). 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: 2.5s, 131 PlacesBefore, 62 PlacesAfterwards, 120 TransitionsBefore, 49 TransitionsAfterwards, 3096 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 79 TotalNumberOfCompositions, 9672 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5014, independent: 4779, independent conditional: 0, independent unconditional: 4779, dependent: 235, dependent conditional: 0, dependent unconditional: 235, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1977, independent: 1918, independent conditional: 0, independent unconditional: 1918, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1977, independent: 1886, independent conditional: 0, independent unconditional: 1886, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 91, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 144, independent: 61, independent conditional: 0, independent unconditional: 61, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5014, independent: 2861, independent conditional: 0, independent unconditional: 2861, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 1977, unknown conditional: 0, unknown unconditional: 1977] , Statistics on independence cache: Total cache size (in pairs): 518, Positive cache size: 484, Positive conditional cache size: 0, Positive unconditional cache size: 484, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, 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: 6.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 595 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 595 mSDsluCounter, 426 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 275 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1206 IncrementalHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 151 mSDtfsCounter, 1206 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9658occurred 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: 1.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 1970 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 382 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! [2022-12-14 14:00:40,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a08dff0d-769a-49af-8e32-bf2d54d6c8cd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE