./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/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_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/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_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/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 e73cda23545f4a54d3eef0093038f0fb79909f0b7b9d845db14abda8dd1f5281 --- 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 09:47:04,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:47:04,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:47:04,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:47:04,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:47:04,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:47:04,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:47:04,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:47:04,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:47:04,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:47:04,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:47:04,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:47:04,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:47:04,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:47:04,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:47:04,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:47:04,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:47:04,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:47:04,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:47:04,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:47:04,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:47:04,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:47:04,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:47:04,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:47:04,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:47:04,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:47:04,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:47:04,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:47:04,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:47:04,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:47:04,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:47:04,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:47:04,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:47:04,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:47:04,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:47:04,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:47:04,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:47:04,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:47:04,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:47:04,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:47:04,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:47:04,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 09:47:04,791 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:47:04,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:47:04,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:47:04,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:47:04,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:47:04,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:47:04,793 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:47:04,793 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:47:04,793 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:47:04,794 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:47:04,794 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:47:04,794 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:47:04,794 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:47:04,794 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:47:04,795 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:47:04,795 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:47:04,795 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:47:04,795 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:47:04,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:47:04,796 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:47:04,796 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 09:47:04,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:47:04,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:47:04,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:47:04,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:47:04,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:47:04,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:47:04,798 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 09:47:04,798 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:47:04,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:47:04,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:47:04,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:47:04,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:47:04,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:47:04,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:47:04,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:47:04,799 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:47:04,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:47:04,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:47:04,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:47:04,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:47:04,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:47:04,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:47:04,801 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_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e73cda23545f4a54d3eef0093038f0fb79909f0b7b9d845db14abda8dd1f5281 [2022-12-14 09:47:05,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:47:05,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:47:05,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:47:05,026 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:47:05,027 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:47:05,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-12-14 09:47:07,593 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:47:07,835 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:47:07,836 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/sv-benchmarks/c/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-12-14 09:47:07,847 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/data/aa3c1b5b9/f20c7ec6fa2c4535bda66d48e915fe44/FLAG30c1bd058 [2022-12-14 09:47:08,169 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/data/aa3c1b5b9/f20c7ec6fa2c4535bda66d48e915fe44 [2022-12-14 09:47:08,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:47:08,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:47:08,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:47:08,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:47:08,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:47:08,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c82549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08, skipping insertion in model container [2022-12-14 09:47:08,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:47:08,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:47:08,345 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_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/sv-benchmarks/c/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] [2022-12-14 09:47:08,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:47:08,508 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:47:08,517 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_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/sv-benchmarks/c/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] [2022-12-14 09:47:08,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:47:08,568 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:47:08,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:47:08,594 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:47:08,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08 WrapperNode [2022-12-14 09:47:08,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:47:08,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:47:08,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:47:08,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:47:08,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,640 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-12-14 09:47:08,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:47:08,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:47:08,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:47:08,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:47:08,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,664 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:47:08,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:47:08,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:47:08,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:47:08,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (1/1) ... [2022-12-14 09:47:08,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:47:08,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:47:08,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:47:08,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:47:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:47:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 09:47:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:47:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:47:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:47:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-14 09:47:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-14 09:47:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-14 09:47:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-14 09:47:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-14 09:47:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-14 09:47:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:47:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 09:47:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:47:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:47:08,737 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 09:47:08,842 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:47:08,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:47:09,089 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:47:09,162 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:47:09,162 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 09:47:09,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:47:09 BoogieIcfgContainer [2022-12-14 09:47:09,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:47:09,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:47:09,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:47:09,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:47:09,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:47:08" (1/3) ... [2022-12-14 09:47:09,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fabe034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:47:09, skipping insertion in model container [2022-12-14 09:47:09,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:47:08" (2/3) ... [2022-12-14 09:47:09,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fabe034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:47:09, skipping insertion in model container [2022-12-14 09:47:09,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:47:09" (3/3) ... [2022-12-14 09:47:09,169 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-12-14 09:47:09,175 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 09:47:09,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:47:09,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 09:47:09,183 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 09:47:09,220 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 09:47:09,243 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:47:09,253 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 119 transitions, 253 flow [2022-12-14 09:47:09,255 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 119 transitions, 253 flow [2022-12-14 09:47:09,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 253 flow [2022-12-14 09:47:09,291 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-12-14 09:47:09,291 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 09:47:09,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-12-14 09:47:09,297 INFO L119 LiptonReduction]: Number of co-enabled transitions 2592 [2022-12-14 09:47:13,144 INFO L134 LiptonReduction]: Checked pairs total: 8614 [2022-12-14 09:47:13,145 INFO L136 LiptonReduction]: Total number of compositions: 103 [2022-12-14 09:47:13,150 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 31 transitions, 77 flow [2022-12-14 09:47:13,208 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1482 states, 1456 states have (on average 3.556318681318681) internal successors, (5178), 1481 states have internal predecessors, (5178), 0 states have call successors, (0), 0 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 09:47:13,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:47:13,226 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;@14552dc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:47:13,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-14 09:47:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 1482 states, 1456 states have (on average 3.556318681318681) internal successors, (5178), 1481 states have internal predecessors, (5178), 0 states have call successors, (0), 0 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 09:47:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 09:47:13,234 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:47:13,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 09:47:13,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 09:47:13,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:47:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash 498821603, now seen corresponding path program 1 times [2022-12-14 09:47:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:47:13,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537729940] [2022-12-14 09:47:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:47:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:47:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:47:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:47:13,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:47:13,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537729940] [2022-12-14 09:47:13,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537729940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:47:13,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:47:13,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 09:47:13,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113339021] [2022-12-14 09:47:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:47:13,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:47:13,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:47:13,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:47:13,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:47:13,476 INFO L87 Difference]: Start difference. First operand has 1482 states, 1456 states have (on average 3.556318681318681) internal successors, (5178), 1481 states have internal predecessors, (5178), 0 states have call successors, (0), 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 09:47:13,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:47:13,582 INFO L93 Difference]: Finished difference Result 830 states and 2428 transitions. [2022-12-14 09:47:13,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:47:13,584 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 09:47:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:47:13,596 INFO L225 Difference]: With dead ends: 830 [2022-12-14 09:47:13,596 INFO L226 Difference]: Without dead ends: 830 [2022-12-14 09:47:13,597 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 09:47:13,599 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:47:13,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:47:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-12-14 09:47:13,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2022-12-14 09:47:13,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 812 states have (on average 2.9901477832512313) internal successors, (2428), 829 states have internal predecessors, (2428), 0 states have call successors, (0), 0 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 09:47:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2428 transitions. [2022-12-14 09:47:13,658 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2428 transitions. Word has length 5 [2022-12-14 09:47:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:47:13,658 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 2428 transitions. [2022-12-14 09:47:13,658 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 09:47:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2428 transitions. [2022-12-14 09:47:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 09:47:13,660 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:47:13,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:47:13,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:47:13,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 09:47:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:47:13,661 INFO L85 PathProgramCache]: Analyzing trace with hash 991214596, now seen corresponding path program 1 times [2022-12-14 09:47:13,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:47:13,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531069213] [2022-12-14 09:47:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:47:13,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:47:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:47:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:47:13,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:47:13,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531069213] [2022-12-14 09:47:13,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531069213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:47:13,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:47:13,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:47:13,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974669514] [2022-12-14 09:47:13,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:47:13,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:47:13,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:47:13,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:47:13,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:47:13,773 INFO L87 Difference]: Start difference. First operand 830 states and 2428 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:47:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:47:13,864 INFO L93 Difference]: Finished difference Result 682 states and 2036 transitions. [2022-12-14 09:47:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:47:13,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 09:47:13,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:47:13,871 INFO L225 Difference]: With dead ends: 682 [2022-12-14 09:47:13,871 INFO L226 Difference]: Without dead ends: 682 [2022-12-14 09:47:13,872 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 09:47:13,872 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:47:13,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 12 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:47:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-12-14 09:47:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2022-12-14 09:47:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 676 states have (on average 3.0118343195266273) internal successors, (2036), 681 states have internal predecessors, (2036), 0 states have call successors, (0), 0 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 09:47:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2036 transitions. [2022-12-14 09:47:13,890 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2036 transitions. Word has length 11 [2022-12-14 09:47:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:47:13,890 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 2036 transitions. [2022-12-14 09:47:13,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:47:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2036 transitions. [2022-12-14 09:47:13,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 09:47:13,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:47:13,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:47:13,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:47:13,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 09:47:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:47:13,893 INFO L85 PathProgramCache]: Analyzing trace with hash 662879795, now seen corresponding path program 1 times [2022-12-14 09:47:13,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:47:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767258620] [2022-12-14 09:47:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:47:13,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:47:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:47:13,962 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 09:47:13,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:47:13,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767258620] [2022-12-14 09:47:13,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767258620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:47:13,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:47:13,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:47:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030527601] [2022-12-14 09:47:13,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:47:13,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:47:13,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:47:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:47:13,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:47:13,965 INFO L87 Difference]: Start difference. First operand 682 states and 2036 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:47:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:47:14,050 INFO L93 Difference]: Finished difference Result 570 states and 1731 transitions. [2022-12-14 09:47:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:47:14,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 09:47:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:47:14,053 INFO L225 Difference]: With dead ends: 570 [2022-12-14 09:47:14,053 INFO L226 Difference]: Without dead ends: 570 [2022-12-14 09:47:14,053 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 09:47:14,054 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:47:14,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 9 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:47:14,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-12-14 09:47:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-12-14 09:47:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 567 states have (on average 3.052910052910053) internal successors, (1731), 569 states have internal predecessors, (1731), 0 states have call successors, (0), 0 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 09:47:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1731 transitions. [2022-12-14 09:47:14,066 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1731 transitions. Word has length 12 [2022-12-14 09:47:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:47:14,067 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 1731 transitions. [2022-12-14 09:47:14,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:47:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1731 transitions. [2022-12-14 09:47:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 09:47:14,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:47:14,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:47:14,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:47:14,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 09:47:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:47:14,069 INFO L85 PathProgramCache]: Analyzing trace with hash -930133309, now seen corresponding path program 1 times [2022-12-14 09:47:14,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:47:14,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814414473] [2022-12-14 09:47:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:47:14,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:47:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:47:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:47:14,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:47:14,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814414473] [2022-12-14 09:47:14,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814414473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:47:14,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:47:14,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:47:14,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118515686] [2022-12-14 09:47:14,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:47:14,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:47:14,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:47:14,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:47:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:47:14,176 INFO L87 Difference]: Start difference. First operand 570 states and 1731 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 09:47:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:47:14,263 INFO L93 Difference]: Finished difference Result 558 states and 1710 transitions. [2022-12-14 09:47:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:47:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-12-14 09:47:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:47:14,264 INFO L225 Difference]: With dead ends: 558 [2022-12-14 09:47:14,265 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:47:14,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:47:14,266 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:47:14,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 9 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:47:14,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:47:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:47:14,267 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 09:47:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:47:14,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-12-14 09:47:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:47:14,268 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:47:14,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 09:47:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:47:14,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:47:14,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 15 remaining) [2022-12-14 09:47:14,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-12-14 09:47:14,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-12-14 09:47:14,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-12-14 09:47:14,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-12-14 09:47:14,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-12-14 09:47:14,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 15 remaining) [2022-12-14 09:47:14,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 15 remaining) [2022-12-14 09:47:14,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 15 remaining) [2022-12-14 09:47:14,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-12-14 09:47:14,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-12-14 09:47:14,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-12-14 09:47:14,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-12-14 09:47:14,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-12-14 09:47:14,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-12-14 09:47:14,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:47:14,277 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-14 09:47:14,281 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 09:47:14,281 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:47:14,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:47:14 BasicIcfg [2022-12-14 09:47:14,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:47:14,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:47:14,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:47:14,285 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:47:14,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:47:09" (3/4) ... [2022-12-14 09:47:14,288 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:47:14,293 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-14 09:47:14,293 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-14 09:47:14,293 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-14 09:47:14,297 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2022-12-14 09:47:14,297 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 09:47:14,298 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 09:47:14,298 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:47:14,324 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:47:14,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:47:14,325 INFO L158 Benchmark]: Toolchain (without parser) took 6152.59ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 98.2MB in the beginning and 91.3MB in the end (delta: 6.9MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2022-12-14 09:47:14,325 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:47:14,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.41ms. Allocated memory is still 132.1MB. Free memory was 97.8MB in the beginning and 71.7MB in the end (delta: 26.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 09:47:14,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.20ms. Allocated memory is still 132.1MB. Free memory was 71.7MB in the beginning and 68.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 09:47:14,326 INFO L158 Benchmark]: Boogie Preprocessor took 27.83ms. Allocated memory is still 132.1MB. Free memory was 68.8MB in the beginning and 67.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:47:14,326 INFO L158 Benchmark]: RCFGBuilder took 494.23ms. Allocated memory is still 132.1MB. Free memory was 67.1MB in the beginning and 79.3MB in the end (delta: -12.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2022-12-14 09:47:14,326 INFO L158 Benchmark]: TraceAbstraction took 5119.17ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 78.7MB in the beginning and 94.4MB in the end (delta: -15.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-12-14 09:47:14,326 INFO L158 Benchmark]: Witness Printer took 39.83ms. Allocated memory is still 159.4MB. Free memory was 94.4MB in the beginning and 91.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 09:47:14,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.41ms. Allocated memory is still 132.1MB. Free memory was 97.8MB in the beginning and 71.7MB in the end (delta: 26.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.20ms. Allocated memory is still 132.1MB. Free memory was 71.7MB in the beginning and 68.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.83ms. Allocated memory is still 132.1MB. Free memory was 68.8MB in the beginning and 67.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.23ms. Allocated memory is still 132.1MB. Free memory was 67.1MB in the beginning and 79.3MB in the end (delta: -12.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5119.17ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 78.7MB in the beginning and 94.4MB in the end (delta: -15.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Witness Printer took 39.83ms. Allocated memory is still 159.4MB. Free memory was 94.4MB in the beginning and 91.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 127 PlacesBefore, 40 PlacesAfterwards, 119 TransitionsBefore, 31 TransitionsAfterwards, 2592 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 103 TotalNumberOfCompositions, 8614 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3436, independent: 3180, independent conditional: 0, independent unconditional: 3180, dependent: 256, dependent conditional: 0, dependent unconditional: 256, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1723, independent: 1665, independent conditional: 0, independent unconditional: 1665, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1723, independent: 1618, independent conditional: 0, independent unconditional: 1618, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 105, independent: 47, independent conditional: 0, independent unconditional: 47, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 493, independent: 51, independent conditional: 0, independent unconditional: 51, dependent: 443, dependent conditional: 0, dependent unconditional: 443, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3436, independent: 1515, independent conditional: 0, independent unconditional: 1515, dependent: 198, dependent conditional: 0, dependent unconditional: 198, unknown: 1723, unknown conditional: 0, unknown unconditional: 1723] , Statistics on independence cache: Total cache size (in pairs): 186, Positive cache size: 160, Positive conditional cache size: 0, Positive unconditional cache size: 160, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, 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: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 785]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 785]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 805]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 805]: 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, 151 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 15 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1482occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 09:47:14,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52955d08-b8fd-4f34-a1f5-ea6cf8523f37/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