./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba --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 c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- 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-b5237d8 [2022-11-22 01:43:22,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:43:22,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:43:22,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:43:22,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:43:22,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:43:22,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:43:22,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:43:22,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:43:22,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:43:22,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:43:22,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:43:22,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:43:22,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:43:22,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:43:22,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:43:22,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:43:22,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:43:22,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:43:22,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:43:22,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:43:22,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:43:22,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:43:22,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:43:22,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:43:22,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:43:22,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:43:22,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:43:22,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:43:22,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:43:22,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:43:22,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:43:22,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:43:22,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:43:22,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:43:22,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:43:22,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:43:22,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:43:22,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:43:22,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:43:22,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:43:22,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:43:22,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:43:22,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:43:22,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:43:22,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:43:22,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:43:22,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:43:22,909 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:43:22,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:43:22,910 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:43:22,910 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:43:22,911 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:43:22,912 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:43:22,912 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:43:22,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:43:22,913 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:43:22,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:43:22,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:43:22,914 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:43:22,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:43:22,916 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:43:22,916 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:43:22,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:43:22,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:43:22,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:43:22,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:43:22,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:43:22,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:43:22,919 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:43:22,920 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:43:22,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:43:22,921 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:43:22,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:43:22,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:43:22,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:43:22,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:43:22,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:43:22,923 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:43:22,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:43:22,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:43:22,924 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:43:22,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:43:22,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:43:22,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:43:22,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2022-11-22 01:43:23,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:43:23,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:43:23,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:43:23,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:43:23,291 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:43:23,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-22 01:43:26,591 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:43:26,864 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:43:26,865 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-22 01:43:26,875 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/data/5aa466782/be2b3198d79d4ea98072c10f42260b1d/FLAG2a8aa2e4a [2022-11-22 01:43:26,893 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/data/5aa466782/be2b3198d79d4ea98072c10f42260b1d [2022-11-22 01:43:26,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:43:26,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:43:26,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:43:26,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:43:26,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:43:26,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:26" (1/1) ... [2022-11-22 01:43:26,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e64a3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:26, skipping insertion in model container [2022-11-22 01:43:26,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:26" (1/1) ... [2022-11-22 01:43:26,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:43:26,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:43:27,161 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_1bd69058-22ff-497c-8ac6-faf030cd2244/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-22 01:43:27,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:43:27,181 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:43:27,225 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_1bd69058-22ff-497c-8ac6-faf030cd2244/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-22 01:43:27,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:43:27,246 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:43:27,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27 WrapperNode [2022-11-22 01:43:27,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:43:27,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:43:27,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:43:27,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:43:27,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,303 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 302 [2022-11-22 01:43:27,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:43:27,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:43:27,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:43:27,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:43:27,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:43:27,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:43:27,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:43:27,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:43:27,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (1/1) ... [2022-11-22 01:43:27,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:43:27,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:27,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:43:27,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd69058-22ff-497c-8ac6-faf030cd2244/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:43:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:43:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:43:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:43:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:43:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 01:43:27,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 01:43:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-22 01:43:27,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-22 01:43:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-22 01:43:27,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-22 01:43:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-22 01:43:27,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-22 01:43:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:43:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-22 01:43:27,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-22 01:43:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-22 01:43:27,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-22 01:43:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 01:43:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 01:43:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:43:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:43:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:43:27,484 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:43:27,630 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:43:27,633 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:43:28,161 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:43:28,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:43:28,379 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:43:28,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:28 BoogieIcfgContainer [2022-11-22 01:43:28,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:43:28,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:43:28,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:43:28,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:43:28,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:43:26" (1/3) ... [2022-11-22 01:43:28,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d264e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:28, skipping insertion in model container [2022-11-22 01:43:28,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:27" (2/3) ... [2022-11-22 01:43:28,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d264e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:28, skipping insertion in model container [2022-11-22 01:43:28,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:28" (3/3) ... [2022-11-22 01:43:28,392 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-11-22 01:43:28,402 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:43:28,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:43:28,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-22 01:43:28,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:43:28,511 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-22 01:43:28,555 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:43:28,572 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 211 transitions, 470 flow [2022-11-22 01:43:28,575 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 211 transitions, 470 flow [2022-11-22 01:43:28,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 211 transitions, 470 flow [2022-11-22 01:43:28,672 INFO L130 PetriNetUnfolder]: 2/205 cut-off events. [2022-11-22 01:43:28,673 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-22 01:43:28,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 205 events. 2/205 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 170 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 159. Up to 2 conditions per place. [2022-11-22 01:43:28,682 INFO L119 LiptonReduction]: Number of co-enabled transitions 6226 [2022-11-22 01:43:40,636 INFO L134 LiptonReduction]: Checked pairs total: 26850 [2022-11-22 01:43:40,636 INFO L136 LiptonReduction]: Total number of compositions: 169 [2022-11-22 01:43:40,644 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 74 transitions, 196 flow [2022-11-22 01:44:12,710 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 748968 states, 733344 states have (on average 5.776796428415587) internal successors, (4236379), 748967 states have internal predecessors, (4236379), 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) [2022-11-22 01:44:12,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:44:12,768 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;@1c40d754, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:44:12,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-11-22 01:44:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 748968 states, 733344 states have (on average 5.776796428415587) internal successors, (4236379), 748967 states have internal predecessors, (4236379), 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) [2022-11-22 01:44:13,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:44:13,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:13,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:44:13,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2022-11-22 01:44:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:13,955 INFO L85 PathProgramCache]: Analyzing trace with hash 929735, now seen corresponding path program 1 times [2022-11-22 01:44:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:13,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925403121] [2022-11-22 01:44:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:13,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:14,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:14,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925403121] [2022-11-22 01:44:14,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925403121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:14,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:14,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:44:14,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635351196] [2022-11-22 01:44:14,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:14,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:44:14,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:14,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:44:14,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:44:15,869 INFO L87 Difference]: Start difference. First operand has 748968 states, 733344 states have (on average 5.776796428415587) internal successors, (4236379), 748967 states have internal predecessors, (4236379), 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)