./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fafa05b72e6925548935fa790281a49d4bca5cad8ef15917dd3e0ea4e3ccb38f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:22:25,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:22:25,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:22:25,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:22:25,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:22:25,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:22:25,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:22:25,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:22:25,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:22:25,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:22:25,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:22:25,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:22:25,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:22:25,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:22:25,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:22:25,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:22:25,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:22:25,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:22:25,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:22:25,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:22:25,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:22:25,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:22:25,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:22:25,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:22:25,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:22:25,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:22:25,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:22:25,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:22:25,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:22:25,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:22:25,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:22:25,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:22:25,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:22:25,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:22:25,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:22:25,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:22:25,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:22:25,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:22:25,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:22:25,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:22:25,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:22:25,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:22:25,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:22:25,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:22:25,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:22:25,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:22:25,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:22:25,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:22:25,914 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:22:25,914 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:22:25,915 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:22:25,915 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:22:25,915 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:22:25,916 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:22:25,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:22:25,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:22:25,917 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:22:25,917 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:22:25,918 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:22:25,918 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:22:25,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:22:25,919 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:22:25,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:22:25,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:22:25,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:22:25,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:22:25,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:22:25,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:22:25,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:22:25,922 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:22:25,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:22:25,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:22:25,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:22:25,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:22:25,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:22:25,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:22:25,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:22:25,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:22:25,925 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:22:25,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:22:25,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:22:25,926 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:22:25,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:22:25,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:22:25,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:22:25,927 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_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fafa05b72e6925548935fa790281a49d4bca5cad8ef15917dd3e0ea4e3ccb38f [2022-11-25 23:22:26,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:22:26,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:22:26,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:22:26,265 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:22:26,266 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:22:26,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2022-11-25 23:22:29,983 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:22:30,195 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:22:30,196 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2022-11-25 23:22:30,205 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/data/61da98ffa/f1d311174212437d8c7fe8a91d62ab6d/FLAG9580dd82d [2022-11-25 23:22:30,224 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/data/61da98ffa/f1d311174212437d8c7fe8a91d62ab6d [2022-11-25 23:22:30,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:22:30,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:22:30,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:22:30,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:22:30,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:22:30,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3f4568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30, skipping insertion in model container [2022-11-25 23:22:30,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:22:30,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:22:30,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:22:30,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:22:30,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:22:30,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:22:30,512 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_c8c866ab-e14c-479f-a376-33d0899b5794/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c[2252,2265] [2022-11-25 23:22:30,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:22:30,526 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:22:30,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:22:30,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:22:30,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:22:30,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:22:30,560 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_c8c866ab-e14c-479f-a376-33d0899b5794/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c[2252,2265] [2022-11-25 23:22:30,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:22:30,577 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:22:30,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30 WrapperNode [2022-11-25 23:22:30,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:22:30,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:22:30,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:22:30,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:22:30,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,649 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2022-11-25 23:22:30,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:22:30,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:22:30,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:22:30,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:22:30,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,679 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:22:30,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:22:30,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:22:30,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:22:30,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (1/1) ... [2022-11-25 23:22:30,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:22:30,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:22:30,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:22:30,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:22:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:22:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 23:22:30,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 23:22:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 23:22:30,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 23:22:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:22:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:22:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:22:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 23:22:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 23:22:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:22:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:22:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:22:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:22:30,779 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:22:30,890 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:22:30,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:22:31,325 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:22:31,547 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:22:31,547 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 23:22:31,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:22:31 BoogieIcfgContainer [2022-11-25 23:22:31,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:22:31,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:22:31,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:22:31,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:22:31,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:22:30" (1/3) ... [2022-11-25 23:22:31,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701d7236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:22:31, skipping insertion in model container [2022-11-25 23:22:31,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:22:30" (2/3) ... [2022-11-25 23:22:31,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701d7236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:22:31, skipping insertion in model container [2022-11-25 23:22:31,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:22:31" (3/3) ... [2022-11-25 23:22:31,562 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled-atomic.wvr.c [2022-11-25 23:22:31,573 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:22:31,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:22:31,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-25 23:22:31,587 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:22:31,698 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 23:22:31,759 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:22:31,788 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 119 transitions, 254 flow [2022-11-25 23:22:31,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 119 transitions, 254 flow [2022-11-25 23:22:31,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 119 transitions, 254 flow [2022-11-25 23:22:31,879 INFO L130 PetriNetUnfolder]: 7/117 cut-off events. [2022-11-25 23:22:31,880 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 23:22:31,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 117 events. 7/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 141 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-11-25 23:22:31,888 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2022-11-25 23:22:37,963 INFO L134 LiptonReduction]: Checked pairs total: 1947 [2022-11-25 23:22:37,963 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-11-25 23:22:37,974 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 35 transitions, 86 flow [2022-11-25 23:22:38,037 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 334 states, 214 states have (on average 3.7803738317757007) internal successors, (809), 333 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:38,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:22:38,071 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;@5df3847b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:22:38,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-25 23:22:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 214 states have (on average 3.7803738317757007) internal successors, (809), 333 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:22:38,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:22:38,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:22:38,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-25 23:22:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:22:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash 558542, now seen corresponding path program 1 times [2022-11-25 23:22:38,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:22:38,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959962562] [2022-11-25 23:22:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:38,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:22:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:38,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:38,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959962562] [2022-11-25 23:22:38,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959962562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:22:38,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:22:38,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:22:38,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703549059] [2022-11-25 23:22:38,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:22:38,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:22:38,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:22:38,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:22:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:38,559 INFO L87 Difference]: Start difference. First operand has 334 states, 214 states have (on average 3.7803738317757007) internal successors, (809), 333 states have internal predecessors, (809), 0 states have call successors, (0), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:22:38,672 INFO L93 Difference]: Finished difference Result 80 states and 176 transitions. [2022-11-25 23:22:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:22:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 23:22:38,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:22:38,688 INFO L225 Difference]: With dead ends: 80 [2022-11-25 23:22:38,689 INFO L226 Difference]: Without dead ends: 80 [2022-11-25 23:22:38,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:38,698 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:22:38,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:22:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-25 23:22:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-25 23:22:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 2.983050847457627) internal successors, (176), 79 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2022-11-25 23:22:38,761 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 3 [2022-11-25 23:22:38,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:22:38,764 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2022-11-25 23:22:38,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2022-11-25 23:22:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:22:38,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:22:38,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:22:38,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:22:38,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-25 23:22:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:22:38,776 INFO L85 PathProgramCache]: Analyzing trace with hash 558420, now seen corresponding path program 1 times [2022-11-25 23:22:38,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:22:38,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505315436] [2022-11-25 23:22:38,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:22:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:38,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:38,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505315436] [2022-11-25 23:22:38,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505315436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:22:38,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:22:38,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:22:38,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674919560] [2022-11-25 23:22:38,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:22:38,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:22:38,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:22:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:22:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:38,881 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:38,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:22:38,915 INFO L93 Difference]: Finished difference Result 40 states and 80 transitions. [2022-11-25 23:22:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:22:38,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 23:22:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:22:38,916 INFO L225 Difference]: With dead ends: 40 [2022-11-25 23:22:38,916 INFO L226 Difference]: Without dead ends: 40 [2022-11-25 23:22:38,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:38,918 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:22:38,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:22:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-25 23:22:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-25 23:22:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 39 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 80 transitions. [2022-11-25 23:22:38,925 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 80 transitions. Word has length 3 [2022-11-25 23:22:38,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:22:38,925 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 80 transitions. [2022-11-25 23:22:38,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 80 transitions. [2022-11-25 23:22:38,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:22:38,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:22:38,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:22:38,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:22:38,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-25 23:22:38,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:22:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash 558538, now seen corresponding path program 1 times [2022-11-25 23:22:38,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:22:38,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748836589] [2022-11-25 23:22:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:38,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:22:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:38,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:38,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748836589] [2022-11-25 23:22:38,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748836589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:22:38,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:22:38,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:22:38,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51969103] [2022-11-25 23:22:38,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:22:38,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:22:38,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:22:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:22:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:38,998 INFO L87 Difference]: Start difference. First operand 40 states and 80 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:22:39,045 INFO L93 Difference]: Finished difference Result 62 states and 129 transitions. [2022-11-25 23:22:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:22:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 23:22:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:22:39,048 INFO L225 Difference]: With dead ends: 62 [2022-11-25 23:22:39,048 INFO L226 Difference]: Without dead ends: 62 [2022-11-25 23:22:39,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:39,050 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:22:39,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:22:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-25 23:22:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2022-11-25 23:22:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 47 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 111 transitions. [2022-11-25 23:22:39,058 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 111 transitions. Word has length 3 [2022-11-25 23:22:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:22:39,058 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 111 transitions. [2022-11-25 23:22:39,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,059 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 111 transitions. [2022-11-25 23:22:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:22:39,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:22:39,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:22:39,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:22:39,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-25 23:22:39,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:22:39,061 INFO L85 PathProgramCache]: Analyzing trace with hash 17315340, now seen corresponding path program 1 times [2022-11-25 23:22:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:22:39,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761344208] [2022-11-25 23:22:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:39,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:22:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:39,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761344208] [2022-11-25 23:22:39,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761344208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:22:39,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389119514] [2022-11-25 23:22:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:39,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:22:39,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:22:39,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:22:39,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:22:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:39,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:22:39,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:22:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:39,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:22:39,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389119514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:22:39,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:22:39,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-25 23:22:39,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613575447] [2022-11-25 23:22:39,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:22:39,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:22:39,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:22:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:22:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:22:39,286 INFO L87 Difference]: Start difference. First operand 48 states and 111 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:22:39,346 INFO L93 Difference]: Finished difference Result 34 states and 83 transitions. [2022-11-25 23:22:39,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:22:39,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-25 23:22:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:22:39,347 INFO L225 Difference]: With dead ends: 34 [2022-11-25 23:22:39,347 INFO L226 Difference]: Without dead ends: 30 [2022-11-25 23:22:39,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:22:39,349 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:22:39,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:22:39,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-25 23:22:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2022-11-25 23:22:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 2.35) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 47 transitions. [2022-11-25 23:22:39,353 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 47 transitions. Word has length 4 [2022-11-25 23:22:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:22:39,353 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 47 transitions. [2022-11-25 23:22:39,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 47 transitions. [2022-11-25 23:22:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:22:39,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:22:39,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:22:39,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 23:22:39,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:22:39,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-25 23:22:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:22:39,562 INFO L85 PathProgramCache]: Analyzing trace with hash 536796617, now seen corresponding path program 1 times [2022-11-25 23:22:39,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:22:39,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229769091] [2022-11-25 23:22:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:39,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:22:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:39,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:39,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229769091] [2022-11-25 23:22:39,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229769091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:22:39,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:22:39,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:22:39,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259737874] [2022-11-25 23:22:39,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:22:39,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:22:39,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:22:39,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:22:39,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:39,662 INFO L87 Difference]: Start difference. First operand 24 states and 47 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:22:39,701 INFO L93 Difference]: Finished difference Result 30 states and 61 transitions. [2022-11-25 23:22:39,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:22:39,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:22:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:22:39,704 INFO L225 Difference]: With dead ends: 30 [2022-11-25 23:22:39,704 INFO L226 Difference]: Without dead ends: 30 [2022-11-25 23:22:39,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:22:39,708 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:22:39,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:22:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-25 23:22:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-25 23:22:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 61 transitions. [2022-11-25 23:22:39,724 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 61 transitions. Word has length 5 [2022-11-25 23:22:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:22:39,725 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 61 transitions. [2022-11-25 23:22:39,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 61 transitions. [2022-11-25 23:22:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:22:39,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:22:39,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:22:39,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:22:39,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-25 23:22:39,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:22:39,728 INFO L85 PathProgramCache]: Analyzing trace with hash -539173626, now seen corresponding path program 1 times [2022-11-25 23:22:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:22:39,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793102517] [2022-11-25 23:22:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:22:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:39,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:39,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793102517] [2022-11-25 23:22:39,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793102517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:22:39,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881690875] [2022-11-25 23:22:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:22:39,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:22:39,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:22:39,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:22:39,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:22:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:39,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:22:39,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:22:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:39,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:22:39,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881690875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:22:39,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:22:39,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-25 23:22:39,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328444310] [2022-11-25 23:22:39,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:22:39,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:22:39,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:22:39,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:22:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:22:39,960 INFO L87 Difference]: Start difference. First operand 30 states and 61 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:22:39,986 INFO L93 Difference]: Finished difference Result 18 states and 38 transitions. [2022-11-25 23:22:39,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:22:39,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-25 23:22:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:22:39,987 INFO L225 Difference]: With dead ends: 18 [2022-11-25 23:22:39,987 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:22:39,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:22:39,989 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:22:39,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:22:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:22:39,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:22:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:22:39,991 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-11-25 23:22:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:22:39,992 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:22:39,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:22:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:22:39,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:22:39,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 42 remaining) [2022-11-25 23:22:39,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 42 remaining) [2022-11-25 23:22:39,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 42 remaining) [2022-11-25 23:22:39,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 42 remaining) [2022-11-25 23:22:39,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 42 remaining) [2022-11-25 23:22:39,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 42 remaining) [2022-11-25 23:22:39,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 42 remaining) [2022-11-25 23:22:39,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 42 remaining) [2022-11-25 23:22:39,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 42 remaining) [2022-11-25 23:22:39,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 42 remaining) [2022-11-25 23:22:39,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 42 remaining) [2022-11-25 23:22:39,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 42 remaining) [2022-11-25 23:22:39,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 42 remaining) [2022-11-25 23:22:39,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 42 remaining) [2022-11-25 23:22:39,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 42 remaining) [2022-11-25 23:22:40,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 42 remaining) [2022-11-25 23:22:40,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 42 remaining) [2022-11-25 23:22:40,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 42 remaining) [2022-11-25 23:22:40,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 42 remaining) [2022-11-25 23:22:40,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 42 remaining) [2022-11-25 23:22:40,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 42 remaining) [2022-11-25 23:22:40,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 42 remaining) [2022-11-25 23:22:40,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 42 remaining) [2022-11-25 23:22:40,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 42 remaining) [2022-11-25 23:22:40,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 42 remaining) [2022-11-25 23:22:40,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 42 remaining) [2022-11-25 23:22:40,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 42 remaining) [2022-11-25 23:22:40,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 42 remaining) [2022-11-25 23:22:40,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 42 remaining) [2022-11-25 23:22:40,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 42 remaining) [2022-11-25 23:22:40,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 42 remaining) [2022-11-25 23:22:40,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 42 remaining) [2022-11-25 23:22:40,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 42 remaining) [2022-11-25 23:22:40,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 42 remaining) [2022-11-25 23:22:40,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 42 remaining) [2022-11-25 23:22:40,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 42 remaining) [2022-11-25 23:22:40,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 42 remaining) [2022-11-25 23:22:40,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 42 remaining) [2022-11-25 23:22:40,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 42 remaining) [2022-11-25 23:22:40,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 42 remaining) [2022-11-25 23:22:40,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 42 remaining) [2022-11-25 23:22:40,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 42 remaining) [2022-11-25 23:22:40,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:22:40,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:22:40,216 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-25 23:22:40,221 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 23:22:40,222 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:22:40,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:22:40 BasicIcfg [2022-11-25 23:22:40,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:22:40,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:22:40,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:22:40,229 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:22:40,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:22:31" (3/4) ... [2022-11-25 23:22:40,232 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:22:40,241 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 23:22:40,241 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 23:22:40,247 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-25 23:22:40,248 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 23:22:40,248 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 23:22:40,248 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:22:40,287 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:22:40,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:22:40,288 INFO L158 Benchmark]: Toolchain (without parser) took 10058.61ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 134.7MB in the beginning and 160.9MB in the end (delta: -26.2MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2022-11-25 23:22:40,288 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 134.2MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:22:40,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.60ms. Allocated memory is still 178.3MB. Free memory was 134.3MB in the beginning and 123.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 23:22:40,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.69ms. Allocated memory is still 178.3MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:22:40,289 INFO L158 Benchmark]: Boogie Preprocessor took 33.89ms. Allocated memory is still 178.3MB. Free memory was 121.3MB in the beginning and 120.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:22:40,289 INFO L158 Benchmark]: RCFGBuilder took 865.87ms. Allocated memory is still 178.3MB. Free memory was 120.0MB in the beginning and 141.2MB in the end (delta: -21.2MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2022-11-25 23:22:40,290 INFO L158 Benchmark]: TraceAbstraction took 8674.06ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 140.1MB in the beginning and 164.1MB in the end (delta: -24.0MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-11-25 23:22:40,290 INFO L158 Benchmark]: Witness Printer took 59.09ms. Allocated memory is still 213.9MB. Free memory was 164.1MB in the beginning and 160.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:22:40,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 134.2MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.60ms. Allocated memory is still 178.3MB. Free memory was 134.3MB in the beginning and 123.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.69ms. Allocated memory is still 178.3MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.89ms. Allocated memory is still 178.3MB. Free memory was 121.3MB in the beginning and 120.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 865.87ms. Allocated memory is still 178.3MB. Free memory was 120.0MB in the beginning and 141.2MB in the end (delta: -21.2MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8674.06ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 140.1MB in the beginning and 164.1MB in the end (delta: -24.0MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 59.09ms. Allocated memory is still 213.9MB. Free memory was 164.1MB in the beginning and 160.9MB 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: 6.2s, 119 PlacesBefore, 40 PlacesAfterwards, 119 TransitionsBefore, 35 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 7 FixpointIterations, 67 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 139 TotalNumberOfCompositions, 1947 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1947, independent: 1947, independent conditional: 0, independent unconditional: 1947, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 593, independent: 593, independent conditional: 0, independent unconditional: 593, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 593, independent: 593, independent conditional: 0, independent unconditional: 593, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1947, independent: 1354, independent conditional: 0, independent unconditional: 1354, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 593, unknown conditional: 0, unknown unconditional: 593] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: 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 5 procedures, 149 locations, 42 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 144 IncrementalHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 2 mSDtfsCounter, 144 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=334occurred in iteration=0, InterpolantAutomatonStates: 18, 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, 6 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 0 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 2/4 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 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 23:22:40,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c866ab-e14c-479f-a376-33d0899b5794/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE