./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 4e7fbc69 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_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/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_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 15:58:45,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:58:45,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:58:45,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:58:45,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:58:45,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:58:45,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:58:45,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:58:45,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:58:45,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:58:45,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:58:45,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:58:45,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:58:45,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:58:45,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:58:45,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:58:45,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:58:45,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:58:45,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:58:45,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:58:45,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:58:45,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:58:45,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:58:45,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:58:45,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:58:45,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:58:45,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:58:45,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:58:45,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:58:45,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:58:45,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:58:45,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:58:45,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:58:45,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:58:45,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:58:45,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:58:45,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:58:45,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:58:45,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:58:45,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:58:45,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:58:45,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 15:58:45,955 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:58:45,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:58:45,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:58:45,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:58:45,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:58:45,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:58:45,956 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:58:45,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:58:45,957 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:58:45,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:58:45,957 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:58:45,957 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:58:45,960 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:58:45,961 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:58:45,961 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:58:45,961 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:58:45,961 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:58:45,962 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:58:45,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:58:45,962 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:58:45,963 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:58:45,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:58:45,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:58:45,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:58:45,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:58:45,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:58:45,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:58:45,965 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:58:45,966 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:58:45,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:58:45,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:58:45,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:58:45,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:58:45,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:58:45,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:58:45,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:58:45,968 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:58:45,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:58:45,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:58:45,969 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:58:45,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:58:45,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:58:45,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:58:45,970 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_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fafa05b72e6925548935fa790281a49d4bca5cad8ef15917dd3e0ea4e3ccb38f [2022-11-23 15:58:46,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:58:46,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:58:46,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:58:46,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:58:46,331 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:58:46,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2022-11-23 15:58:49,373 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:58:49,581 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:58:49,581 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2022-11-23 15:58:49,588 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/data/73b32cb51/b4c03653859d40ef8895f6a5835df418/FLAG06f164a52 [2022-11-23 15:58:49,603 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/data/73b32cb51/b4c03653859d40ef8895f6a5835df418 [2022-11-23 15:58:49,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:58:49,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:58:49,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:58:49,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:58:49,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:58:49,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:49,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ebc5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49, skipping insertion in model container [2022-11-23 15:58:49,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:49,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:58:49,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:58:49,845 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_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c[2252,2265] [2022-11-23 15:58:49,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:58:49,864 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:58:49,904 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_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c[2252,2265] [2022-11-23 15:58:49,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:58:49,920 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:58:49,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49 WrapperNode [2022-11-23 15:58:49,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:58:49,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:58:49,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:58:49,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:58:49,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:49,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:49,979 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2022-11-23 15:58:49,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:58:49,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:58:49,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:58:49,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:58:49,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:49,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:50,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:50,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:50,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:50,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:50,030 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:50,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:50,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:58:50,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:58:50,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:58:50,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:58:50,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (1/1) ... [2022-11-23 15:58:50,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:58:50,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:58:50,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:58:50,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:58:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:58:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 15:58:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 15:58:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 15:58:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 15:58:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:58:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:58:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:58:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 15:58:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 15:58:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:58:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:58:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:58:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:58:50,129 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 15:58:50,224 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:58:50,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:58:50,557 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:58:50,856 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:58:50,856 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:58:50,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:50 BoogieIcfgContainer [2022-11-23 15:58:50,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:58:50,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:58:50,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:58:50,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:58:50,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:58:49" (1/3) ... [2022-11-23 15:58:50,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f83d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:58:50, skipping insertion in model container [2022-11-23 15:58:50,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:49" (2/3) ... [2022-11-23 15:58:50,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f83d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:58:50, skipping insertion in model container [2022-11-23 15:58:50,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:50" (3/3) ... [2022-11-23 15:58:50,883 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled-atomic.wvr.c [2022-11-23 15:58:50,893 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 15:58:50,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:58:50,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-23 15:58:50,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 15:58:50,986 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 15:58:51,039 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 15:58:51,053 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 119 transitions, 254 flow [2022-11-23 15:58:51,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 119 transitions, 254 flow [2022-11-23 15:58:51,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 119 transitions, 254 flow [2022-11-23 15:58:51,169 INFO L130 PetriNetUnfolder]: 7/117 cut-off events. [2022-11-23 15:58:51,169 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 15:58:51,175 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. [2022-11-23 15:58:51,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2022-11-23 15:58:55,996 INFO L134 LiptonReduction]: Checked pairs total: 1947 [2022-11-23 15:58:55,996 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-11-23 15:58:56,005 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 35 transitions, 86 flow [2022-11-23 15:58:56,047 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) [2022-11-23 15:58:56,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:58:56,074 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;@14e49bbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:58:56,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-23 15:58:56,078 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) [2022-11-23 15:58:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:58:56,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:56,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:58:56,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-23 15:58:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:56,091 INFO L85 PathProgramCache]: Analyzing trace with hash 558542, now seen corresponding path program 1 times [2022-11-23 15:58:56,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:56,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102937206] [2022-11-23 15:58:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:56,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:58:56,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102937206] [2022-11-23 15:58:56,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102937206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:56,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:58:56,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:58:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103529614] [2022-11-23 15:58:56,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:56,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:58:56,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:58:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:58:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:58:56,427 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) [2022-11-23 15:58:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:58:56,540 INFO L93 Difference]: Finished difference Result 80 states and 176 transitions. [2022-11-23 15:58:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:58:56,545 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 [2022-11-23 15:58:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:58:56,558 INFO L225 Difference]: With dead ends: 80 [2022-11-23 15:58:56,559 INFO L226 Difference]: Without dead ends: 80 [2022-11-23 15:58:56,560 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 [2022-11-23 15:58:56,566 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 [2022-11-23 15:58:56,568 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] [2022-11-23 15:58:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-23 15:58:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-23 15:58:56,619 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) [2022-11-23 15:58:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2022-11-23 15:58:56,626 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 3 [2022-11-23 15:58:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:58:56,628 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2022-11-23 15:58:56,633 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) [2022-11-23 15:58:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2022-11-23 15:58:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:58:56,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:56,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:58:56,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:58:56,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-23 15:58:56,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:56,637 INFO L85 PathProgramCache]: Analyzing trace with hash 558420, now seen corresponding path program 1 times [2022-11-23 15:58:56,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:56,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179355285] [2022-11-23 15:58:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:56,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:58:56,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179355285] [2022-11-23 15:58:56,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179355285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:56,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:58:56,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:58:56,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344897994] [2022-11-23 15:58:56,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:56,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:58:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:58:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:58:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:58:56,772 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) [2022-11-23 15:58:56,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:58:56,809 INFO L93 Difference]: Finished difference Result 40 states and 80 transitions. [2022-11-23 15:58:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:58:56,810 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 [2022-11-23 15:58:56,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:58:56,811 INFO L225 Difference]: With dead ends: 40 [2022-11-23 15:58:56,811 INFO L226 Difference]: Without dead ends: 40 [2022-11-23 15:58:56,811 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 [2022-11-23 15:58:56,812 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 [2022-11-23 15:58:56,813 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] [2022-11-23 15:58:56,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-23 15:58:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-23 15:58:56,817 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) [2022-11-23 15:58:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 80 transitions. [2022-11-23 15:58:56,817 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 80 transitions. Word has length 3 [2022-11-23 15:58:56,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:58:56,818 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 80 transitions. [2022-11-23 15:58:56,818 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) [2022-11-23 15:58:56,818 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 80 transitions. [2022-11-23 15:58:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:58:56,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:56,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:58:56,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:58:56,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-23 15:58:56,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:56,820 INFO L85 PathProgramCache]: Analyzing trace with hash 558538, now seen corresponding path program 1 times [2022-11-23 15:58:56,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:56,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421233903] [2022-11-23 15:58:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:56,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:56,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:58:56,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421233903] [2022-11-23 15:58:56,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421233903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:56,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:58:56,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:58:56,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522101488] [2022-11-23 15:58:56,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:56,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:58:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:58:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:58:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:58:56,952 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) [2022-11-23 15:58:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:58:57,011 INFO L93 Difference]: Finished difference Result 62 states and 129 transitions. [2022-11-23 15:58:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:58:57,012 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 [2022-11-23 15:58:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:58:57,015 INFO L225 Difference]: With dead ends: 62 [2022-11-23 15:58:57,015 INFO L226 Difference]: Without dead ends: 62 [2022-11-23 15:58:57,016 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 [2022-11-23 15:58:57,017 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:58:57,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:58:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-23 15:58:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2022-11-23 15:58:57,023 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) [2022-11-23 15:58:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 111 transitions. [2022-11-23 15:58:57,024 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 111 transitions. Word has length 3 [2022-11-23 15:58:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:58:57,024 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 111 transitions. [2022-11-23 15:58:57,025 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) [2022-11-23 15:58:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 111 transitions. [2022-11-23 15:58:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:58:57,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:57,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:58:57,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:58:57,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-23 15:58:57,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:57,032 INFO L85 PathProgramCache]: Analyzing trace with hash 17315340, now seen corresponding path program 1 times [2022-11-23 15:58:57,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213396534] [2022-11-23 15:58:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:57,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:57,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:58:57,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213396534] [2022-11-23 15:58:57,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213396534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:58:57,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398713815] [2022-11-23 15:58:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:57,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:58:57,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:58:57,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:58:57,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:58:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:57,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:58:57,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:58:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:57,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:58:57,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398713815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:57,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:58:57,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-23 15:58:57,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107032815] [2022-11-23 15:58:57,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:57,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:58:57,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:58:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:58:57,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:58:57,332 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) [2022-11-23 15:58:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:58:57,361 INFO L93 Difference]: Finished difference Result 34 states and 83 transitions. [2022-11-23 15:58:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:58:57,362 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 [2022-11-23 15:58:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:58:57,363 INFO L225 Difference]: With dead ends: 34 [2022-11-23 15:58:57,363 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 15:58:57,363 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 [2022-11-23 15:58:57,364 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 [2022-11-23 15:58:57,365 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] [2022-11-23 15:58:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 15:58:57,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2022-11-23 15:58:57,384 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) [2022-11-23 15:58:57,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 47 transitions. [2022-11-23 15:58:57,385 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 47 transitions. Word has length 4 [2022-11-23 15:58:57,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:58:57,385 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 47 transitions. [2022-11-23 15:58:57,385 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) [2022-11-23 15:58:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 47 transitions. [2022-11-23 15:58:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:58:57,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:57,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:58:57,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:58:57,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:58:57,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-23 15:58:57,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:57,594 INFO L85 PathProgramCache]: Analyzing trace with hash 536796617, now seen corresponding path program 1 times [2022-11-23 15:58:57,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:57,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479735253] [2022-11-23 15:58:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:57,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:57,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:58:57,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479735253] [2022-11-23 15:58:57,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479735253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:57,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:58:57,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:58:57,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036639193] [2022-11-23 15:58:57,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:57,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:58:57,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:58:57,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:58:57,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:58:57,671 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) [2022-11-23 15:58:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:58:57,710 INFO L93 Difference]: Finished difference Result 30 states and 61 transitions. [2022-11-23 15:58:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:58:57,710 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 [2022-11-23 15:58:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:58:57,712 INFO L225 Difference]: With dead ends: 30 [2022-11-23 15:58:57,712 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 15:58:57,712 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 [2022-11-23 15:58:57,716 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 [2022-11-23 15:58:57,716 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] [2022-11-23 15:58:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 15:58:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-23 15:58:57,724 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) [2022-11-23 15:58:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 61 transitions. [2022-11-23 15:58:57,725 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 61 transitions. Word has length 5 [2022-11-23 15:58:57,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:58:57,725 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 61 transitions. [2022-11-23 15:58:57,725 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) [2022-11-23 15:58:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 61 transitions. [2022-11-23 15:58:57,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:58:57,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:57,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:58:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:58:57,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-23 15:58:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash -539173626, now seen corresponding path program 1 times [2022-11-23 15:58:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:57,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297508142] [2022-11-23 15:58:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:57,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:57,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:58:57,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297508142] [2022-11-23 15:58:57,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297508142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:58:57,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543640520] [2022-11-23 15:58:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:57,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:58:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:58:57,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:58:57,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:58:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:57,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:58:57,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:58:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:57,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:58:57,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543640520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:57,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:58:57,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-23 15:58:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070919146] [2022-11-23 15:58:57,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:57,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:58:57,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:58:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:58:57,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:58:57,904 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) [2022-11-23 15:58:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:58:57,926 INFO L93 Difference]: Finished difference Result 18 states and 38 transitions. [2022-11-23 15:58:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:58:57,927 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 [2022-11-23 15:58:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:58:57,927 INFO L225 Difference]: With dead ends: 18 [2022-11-23 15:58:57,927 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:58:57,927 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 [2022-11-23 15:58:57,930 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 [2022-11-23 15:58:57,931 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] [2022-11-23 15:58:57,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:58:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:58:57,933 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) [2022-11-23 15:58:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:58:57,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-11-23 15:58:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:58:57,933 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:58:57,933 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) [2022-11-23 15:58:57,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:58:57,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:58:57,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 42 remaining) [2022-11-23 15:58:57,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 42 remaining) [2022-11-23 15:58:57,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 42 remaining) [2022-11-23 15:58:57,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 42 remaining) [2022-11-23 15:58:57,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 42 remaining) [2022-11-23 15:58:57,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 42 remaining) [2022-11-23 15:58:57,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 42 remaining) [2022-11-23 15:58:57,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 42 remaining) [2022-11-23 15:58:57,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 42 remaining) [2022-11-23 15:58:57,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 42 remaining) [2022-11-23 15:58:57,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 42 remaining) [2022-11-23 15:58:57,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 42 remaining) [2022-11-23 15:58:57,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 42 remaining) [2022-11-23 15:58:57,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 42 remaining) [2022-11-23 15:58:57,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 42 remaining) [2022-11-23 15:58:57,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 42 remaining) [2022-11-23 15:58:57,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 42 remaining) [2022-11-23 15:58:57,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 42 remaining) [2022-11-23 15:58:57,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 42 remaining) [2022-11-23 15:58:57,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 42 remaining) [2022-11-23 15:58:57,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 42 remaining) [2022-11-23 15:58:57,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 42 remaining) [2022-11-23 15:58:57,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 42 remaining) [2022-11-23 15:58:57,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 42 remaining) [2022-11-23 15:58:57,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 42 remaining) [2022-11-23 15:58:57,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 42 remaining) [2022-11-23 15:58:57,950 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 42 remaining) [2022-11-23 15:58:57,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 42 remaining) [2022-11-23 15:58:57,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 42 remaining) [2022-11-23 15:58:57,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 42 remaining) [2022-11-23 15:58:57,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 42 remaining) [2022-11-23 15:58:57,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 42 remaining) [2022-11-23 15:58:57,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 42 remaining) [2022-11-23 15:58:57,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 42 remaining) [2022-11-23 15:58:57,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 42 remaining) [2022-11-23 15:58:57,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 42 remaining) [2022-11-23 15:58:57,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 42 remaining) [2022-11-23 15:58:57,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 42 remaining) [2022-11-23 15:58:57,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 42 remaining) [2022-11-23 15:58:57,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 42 remaining) [2022-11-23 15:58:57,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 42 remaining) [2022-11-23 15:58:57,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 42 remaining) [2022-11-23 15:58:57,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:58:58,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:58:58,162 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-23 15:58:58,168 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 15:58:58,168 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:58:58,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:58:58 BasicIcfg [2022-11-23 15:58:58,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:58:58,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:58:58,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:58:58,172 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:58:58,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:50" (3/4) ... [2022-11-23 15:58:58,176 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:58:58,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-23 15:58:58,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-23 15:58:58,189 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-23 15:58:58,190 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 15:58:58,190 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 15:58:58,190 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:58:58,227 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:58:58,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:58:58,228 INFO L158 Benchmark]: Toolchain (without parser) took 8621.07ms. Allocated memory was 165.7MB in the beginning and 220.2MB in the end (delta: 54.5MB). Free memory was 120.0MB in the beginning and 164.4MB in the end (delta: -44.3MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-11-23 15:58:58,229 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 165.7MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:58:58,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.25ms. Allocated memory is still 165.7MB. Free memory was 120.0MB in the beginning and 109.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:58:58,229 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.03ms. Allocated memory is still 165.7MB. Free memory was 109.3MB in the beginning and 107.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:58:58,229 INFO L158 Benchmark]: Boogie Preprocessor took 53.46ms. Allocated memory is still 165.7MB. Free memory was 107.4MB in the beginning and 105.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:58:58,230 INFO L158 Benchmark]: RCFGBuilder took 833.05ms. Allocated memory is still 165.7MB. Free memory was 105.7MB in the beginning and 77.9MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 15:58:58,230 INFO L158 Benchmark]: TraceAbstraction took 7300.25ms. Allocated memory was 165.7MB in the beginning and 220.2MB in the end (delta: 54.5MB). Free memory was 77.3MB in the beginning and 167.5MB in the end (delta: -90.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:58:58,230 INFO L158 Benchmark]: Witness Printer took 55.98ms. Allocated memory is still 220.2MB. Free memory was 167.5MB in the beginning and 164.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:58:58,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 165.7MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.25ms. Allocated memory is still 165.7MB. Free memory was 120.0MB in the beginning and 109.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.03ms. Allocated memory is still 165.7MB. Free memory was 109.3MB in the beginning and 107.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.46ms. Allocated memory is still 165.7MB. Free memory was 107.4MB in the beginning and 105.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 833.05ms. Allocated memory is still 165.7MB. Free memory was 105.7MB in the beginning and 77.9MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 7300.25ms. Allocated memory was 165.7MB in the beginning and 220.2MB in the end (delta: 54.5MB). Free memory was 77.3MB in the beginning and 167.5MB in the end (delta: -90.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 55.98ms. Allocated memory is still 220.2MB. Free memory was 167.5MB in the beginning and 164.4MB 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: 4.9s, 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: 7.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, 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, 0.1s 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! [2022-11-23 15:58:58,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72bdb951-b6c8-4f10-a52b-be5ddc9b12b2/bin/utaipan-Q6hlc19bkW/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