./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:42:28,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:42:28,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:42:28,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:42:28,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:42:28,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:42:28,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:42:28,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:42:28,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:42:28,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:42:28,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:42:28,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:42:28,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:42:28,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:42:28,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:42:28,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:42:28,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:42:28,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:42:28,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:42:28,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:42:28,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:42:28,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:42:28,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:42:28,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:42:28,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:42:28,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:42:28,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:42:28,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:42:28,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:42:28,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:42:28,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:42:28,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:42:28,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:42:28,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:42:28,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:42:28,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:42:28,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:42:28,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:42:28,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:42:28,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:42:28,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:42:28,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:42:28,949 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:42:28,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:42:28,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:42:28,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:42:28,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:42:28,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:42:28,951 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:42:28,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:42:28,951 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:42:28,951 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:42:28,951 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:42:28,952 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:42:28,952 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:42:28,952 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:42:28,952 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:42:28,952 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:42:28,952 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:42:28,952 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:42:28,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:42:28,953 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:42:28,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:42:28,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:42:28,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:42:28,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:42:28,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:42:28,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:42:28,954 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:42:28,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:42:28,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:42:28,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:42:28,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:42:28,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:42:28,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:42:28,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:42:28,956 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:42:28,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:42:28,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:42:28,956 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:42:28,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:42:28,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:42:28,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:42:28,957 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_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2022-12-14 05:42:29,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:42:29,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:42:29,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:42:29,176 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:42:29,176 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:42:29,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-12-14 05:42:31,799 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:42:31,965 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:42:31,965 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-12-14 05:42:31,975 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/data/a6ba5d25d/067b81abcf9b40c9bad3bc220ab58547/FLAGe28a3204c [2022-12-14 05:42:31,985 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/data/a6ba5d25d/067b81abcf9b40c9bad3bc220ab58547 [2022-12-14 05:42:31,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:42:31,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:42:31,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:42:31,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:42:31,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:42:31,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:42:31" (1/1) ... [2022-12-14 05:42:31,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f893145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:31, skipping insertion in model container [2022-12-14 05:42:31,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:42:31" (1/1) ... [2022-12-14 05:42:31,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:42:32,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:42:32,194 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_e0324a11-bb74-4407-b1ac-d22376545e4f/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2022-12-14 05:42:32,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:42:32,232 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:42:32,252 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_e0324a11-bb74-4407-b1ac-d22376545e4f/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2022-12-14 05:42:32,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:42:32,283 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:42:32,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32 WrapperNode [2022-12-14 05:42:32,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:42:32,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:42:32,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:42:32,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:42:32,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,317 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2022-12-14 05:42:32,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:42:32,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:42:32,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:42:32,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:42:32,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,341 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:42:32,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:42:32,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:42:32,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:42:32,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (1/1) ... [2022-12-14 05:42:32,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:42:32,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:42:32,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:42:32,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:42:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-12-14 05:42:32,398 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-12-14 05:42:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-12-14 05:42:32,398 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-12-14 05:42:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:42:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:42:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-12-14 05:42:32,399 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-12-14 05:42:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:42:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:42:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 05:42:32,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 05:42:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:42:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:42:32,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 05:42:32,400 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-12-14 05:42:32,400 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-12-14 05:42:32,400 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-12-14 05:42:32,400 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-12-14 05:42:32,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:42:32,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:42:32,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:42:32,498 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:42:32,500 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:42:32,827 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:42:32,945 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:42:32,945 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2022-12-14 05:42:32,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:42:32 BoogieIcfgContainer [2022-12-14 05:42:32,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:42:32,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:42:32,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:42:32,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:42:32,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:42:31" (1/3) ... [2022-12-14 05:42:32,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180b489c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:42:32, skipping insertion in model container [2022-12-14 05:42:32,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:32" (2/3) ... [2022-12-14 05:42:32,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180b489c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:42:32, skipping insertion in model container [2022-12-14 05:42:32,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:42:32" (3/3) ... [2022-12-14 05:42:32,957 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2022-12-14 05:42:32,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:42:32,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:42:33,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:42:33,033 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;@c61a706, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:42:33,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:42:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 69 states have (on average 1.7971014492753623) internal successors, (124), 89 states have internal predecessors, (124), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-14 05:42:33,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 05:42:33,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:33,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:33,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash -64236935, now seen corresponding path program 1 times [2022-12-14 05:42:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:42:33,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823767292] [2022-12-14 05:42:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:33,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:42:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 05:42:33,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:42:33,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823767292] [2022-12-14 05:42:33,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823767292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:42:33,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:42:33,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:42:33,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596355576] [2022-12-14 05:42:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:42:33,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:42:33,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:42:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:42:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:42:33,376 INFO L87 Difference]: Start difference. First operand has 101 states, 69 states have (on average 1.7971014492753623) internal successors, (124), 89 states have internal predecessors, (124), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:42:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:33,449 INFO L93 Difference]: Finished difference Result 199 states and 351 transitions. [2022-12-14 05:42:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:42:33,451 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-12-14 05:42:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:33,458 INFO L225 Difference]: With dead ends: 199 [2022-12-14 05:42:33,458 INFO L226 Difference]: Without dead ends: 98 [2022-12-14 05:42:33,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:42:33,463 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:33,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:42:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-14 05:42:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-14 05:42:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.338235294117647) internal successors, (91), 86 states have internal predecessors, (91), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 05:42:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2022-12-14 05:42:33,495 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 22 [2022-12-14 05:42:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:42:33,496 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2022-12-14 05:42:33,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:42:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2022-12-14 05:42:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 05:42:33,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:33,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:33,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:42:33,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:33,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2127805175, now seen corresponding path program 1 times [2022-12-14 05:42:33,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:42:33,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130832893] [2022-12-14 05:42:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:33,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:42:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:42:34,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:42:34,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130832893] [2022-12-14 05:42:34,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130832893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:42:34,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:42:34,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 05:42:34,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153283158] [2022-12-14 05:42:34,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:42:34,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 05:42:34,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:42:34,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 05:42:34,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:42:34,009 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:42:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:34,440 INFO L93 Difference]: Finished difference Result 212 states and 277 transitions. [2022-12-14 05:42:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 05:42:34,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-12-14 05:42:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:34,442 INFO L225 Difference]: With dead ends: 212 [2022-12-14 05:42:34,442 INFO L226 Difference]: Without dead ends: 165 [2022-12-14 05:42:34,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:42:34,444 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 71 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:34,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 846 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:42:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-14 05:42:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 129. [2022-12-14 05:42:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 112 states have internal predecessors, (125), 25 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) [2022-12-14 05:42:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 166 transitions. [2022-12-14 05:42:34,456 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 166 transitions. Word has length 23 [2022-12-14 05:42:34,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:42:34,456 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 166 transitions. [2022-12-14 05:42:34,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:42:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 166 transitions. [2022-12-14 05:42:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 05:42:34,457 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:34,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:34,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:42:34,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:34,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash -278638487, now seen corresponding path program 1 times [2022-12-14 05:42:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:42:34,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749223324] [2022-12-14 05:42:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:42:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:34,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:42:34,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749223324] [2022-12-14 05:42:34,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749223324] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:42:34,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960880344] [2022-12-14 05:42:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:34,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:42:34,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:42:34,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:42:34,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:42:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:34,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 05:42:34,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:34,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:35,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960880344] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:35,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1556701254] [2022-12-14 05:42:35,161 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 05:42:35,161 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:42:35,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:42:35,168 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:42:35,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:42:35,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:42:35,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:42:35,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:42:35,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:36,410 INFO L321 Elim1Store]: treesize reduction 237, result has 25.7 percent of original size [2022-12-14 05:42:36,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 355 treesize of output 373 [2022-12-14 05:42:36,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:37,239 INFO L321 Elim1Store]: treesize reduction 235, result has 26.3 percent of original size [2022-12-14 05:42:37,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 243 treesize of output 263 [2022-12-14 05:42:37,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:37,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:42:37,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 9 [2022-12-14 05:42:37,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:42:37,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 05:42:37,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:42:37,978 INFO L321 Elim1Store]: treesize reduction 202, result has 34.6 percent of original size [2022-12-14 05:42:37,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 6489 treesize of output 4435 [2022-12-14 05:42:38,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 362 [2022-12-14 05:42:38,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:42:39,132 INFO L321 Elim1Store]: treesize reduction 52, result has 36.6 percent of original size [2022-12-14 05:42:39,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 285 treesize of output 313 [2022-12-14 05:42:39,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:39,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:39,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:39,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 96 [2022-12-14 05:42:39,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:42:39,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:42:39,533 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:85) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:71) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:85) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:71) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 05:42:39,537 INFO L158 Benchmark]: Toolchain (without parser) took 7548.24ms. Allocated memory was 142.6MB in the beginning and 289.4MB in the end (delta: 146.8MB). Free memory was 101.6MB in the beginning and 233.2MB in the end (delta: -131.6MB). Peak memory consumption was 136.3MB. Max. memory is 16.1GB. [2022-12-14 05:42:39,537 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 106.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:42:39,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.53ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 82.3MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 05:42:39,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.28ms. Allocated memory is still 142.6MB. Free memory was 82.3MB in the beginning and 79.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:42:39,538 INFO L158 Benchmark]: Boogie Preprocessor took 27.19ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 76.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 05:42:39,538 INFO L158 Benchmark]: RCFGBuilder took 603.17ms. Allocated memory was 142.6MB in the beginning and 241.2MB in the end (delta: 98.6MB). Free memory was 76.9MB in the beginning and 204.3MB in the end (delta: -127.4MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2022-12-14 05:42:39,539 INFO L158 Benchmark]: TraceAbstraction took 6584.74ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 203.2MB in the beginning and 233.2MB in the end (delta: -30.0MB). Peak memory consumption was 137.0MB. Max. memory is 16.1GB. [2022-12-14 05:42:39,541 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 106.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.53ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 82.3MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.28ms. Allocated memory is still 142.6MB. Free memory was 82.3MB in the beginning and 79.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.19ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 76.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 603.17ms. Allocated memory was 142.6MB in the beginning and 241.2MB in the end (delta: 98.6MB). Free memory was 76.9MB in the beginning and 204.3MB in the end (delta: -127.4MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6584.74ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 203.2MB in the beginning and 233.2MB in the end (delta: -30.0MB). Peak memory consumption was 137.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 05:42:39,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:42:41,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:42:41,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:42:41,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:42:41,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:42:41,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:42:41,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:42:41,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:42:41,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:42:41,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:42:41,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:42:41,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:42:41,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:42:41,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:42:41,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:42:41,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:42:41,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:42:41,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:42:41,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:42:41,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:42:41,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:42:41,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:42:41,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:42:41,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:42:41,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:42:41,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:42:41,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:42:41,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:42:41,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:42:41,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:42:41,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:42:41,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:42:41,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:42:41,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:42:41,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:42:41,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:42:41,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:42:41,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:42:41,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:42:41,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:42:41,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:42:41,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 05:42:41,253 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:42:41,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:42:41,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:42:41,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:42:41,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:42:41,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:42:41,255 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:42:41,255 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:42:41,255 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:42:41,255 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:42:41,255 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:42:41,256 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:42:41,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:42:41,256 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:42:41,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:42:41,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:42:41,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:42:41,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:42:41,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:42:41,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:42:41,257 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 05:42:41,257 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 05:42:41,257 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:42:41,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:42:41,257 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:42:41,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:42:41,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:42:41,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 05:42:41,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:42:41,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:42:41,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:42:41,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:42:41,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:42:41,263 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 05:42:41,263 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 05:42:41,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:42:41,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:42:41,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 05:42:41,264 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2022-12-14 05:42:41,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:42:41,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:42:41,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:42:41,480 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:42:41,480 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:42:41,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-12-14 05:42:44,076 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:42:44,245 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:42:44,245 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-12-14 05:42:44,255 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/data/bfb7932f1/cb4962c2670144959609b1664cfffa38/FLAG3971bfe82 [2022-12-14 05:42:44,266 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/data/bfb7932f1/cb4962c2670144959609b1664cfffa38 [2022-12-14 05:42:44,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:42:44,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:42:44,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:42:44,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:42:44,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:42:44,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e9b715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44, skipping insertion in model container [2022-12-14 05:42:44,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:42:44,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:42:44,485 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_e0324a11-bb74-4407-b1ac-d22376545e4f/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2022-12-14 05:42:44,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:42:44,534 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:42:44,553 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_e0324a11-bb74-4407-b1ac-d22376545e4f/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2022-12-14 05:42:44,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:42:44,586 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:42:44,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44 WrapperNode [2022-12-14 05:42:44,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:42:44,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:42:44,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:42:44,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:42:44,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,621 INFO L138 Inliner]: procedures = 141, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 229 [2022-12-14 05:42:44,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:42:44,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:42:44,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:42:44,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:42:44,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,647 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:42:44,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:42:44,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:42:44,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:42:44,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (1/1) ... [2022-12-14 05:42:44,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:42:44,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:42:44,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:42:44,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:42:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-12-14 05:42:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-12-14 05:42:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-12-14 05:42:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 05:42:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 05:42:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-12-14 05:42:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-12-14 05:42:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 05:42:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-12-14 05:42:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-12-14 05:42:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:42:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:42:44,835 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:42:44,838 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:42:45,255 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:42:45,262 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:42:45,262 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2022-12-14 05:42:45,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:42:45 BoogieIcfgContainer [2022-12-14 05:42:45,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:42:45,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:42:45,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:42:45,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:42:45,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:42:44" (1/3) ... [2022-12-14 05:42:45,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a42941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:42:45, skipping insertion in model container [2022-12-14 05:42:45,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:44" (2/3) ... [2022-12-14 05:42:45,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a42941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:42:45, skipping insertion in model container [2022-12-14 05:42:45,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:42:45" (3/3) ... [2022-12-14 05:42:45,272 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2022-12-14 05:42:45,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:42:45,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:42:45,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:42:45,346 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;@8b460fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:42:45,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:42:45,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 115 states have internal predecessors, (163), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-14 05:42:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:42:45,360 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:45,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:45,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1604000671, now seen corresponding path program 1 times [2022-12-14 05:42:45,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:42:45,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986043481] [2022-12-14 05:42:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:45,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:42:45,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:42:45,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:42:45,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 05:42:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:45,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 05:42:45,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 05:42:45,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:42:45,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:42:45,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986043481] [2022-12-14 05:42:45,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986043481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:42:45,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:42:45,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:42:45,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402280317] [2022-12-14 05:42:45,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:42:45,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:42:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:42:45,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:42:45,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:42:45,629 INFO L87 Difference]: Start difference. First operand has 127 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 115 states have internal predecessors, (163), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:42:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:45,658 INFO L93 Difference]: Finished difference Result 249 states and 427 transitions. [2022-12-14 05:42:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:42:45,659 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2022-12-14 05:42:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:45,666 INFO L225 Difference]: With dead ends: 249 [2022-12-14 05:42:45,666 INFO L226 Difference]: Without dead ends: 119 [2022-12-14 05:42:45,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:42:45,671 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:45,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:42:45,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-14 05:42:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-12-14 05:42:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.2808988764044944) internal successors, (114), 107 states have internal predecessors, (114), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 05:42:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 148 transitions. [2022-12-14 05:42:45,704 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 148 transitions. Word has length 37 [2022-12-14 05:42:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:42:45,704 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 148 transitions. [2022-12-14 05:42:45,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:42:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 148 transitions. [2022-12-14 05:42:45,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:42:45,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:45,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:45,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:42:45,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:42:45,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:45,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1419477340, now seen corresponding path program 1 times [2022-12-14 05:42:45,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:42:45,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836372342] [2022-12-14 05:42:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:45,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:42:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:42:45,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:42:45,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 05:42:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:46,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 05:42:46,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:46,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:46,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:42:46,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836372342] [2022-12-14 05:42:46,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836372342] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [923830146] [2022-12-14 05:42:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:46,413 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:42:46,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:42:46,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:42:46,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 05:42:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:46,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 05:42:46,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:46,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:42:46,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-14 05:42:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:42:46,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:42:46,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [923830146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:42:46,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:42:46,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 5] total 19 [2022-12-14 05:42:46,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912871834] [2022-12-14 05:42:46,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:42:46,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 05:42:46,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:42:46,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 05:42:46,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2022-12-14 05:42:46,961 INFO L87 Difference]: Start difference. First operand 119 states and 148 transitions. Second operand has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:42:48,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:48,027 INFO L93 Difference]: Finished difference Result 294 states and 377 transitions. [2022-12-14 05:42:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 05:42:48,028 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2022-12-14 05:42:48,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:48,031 INFO L225 Difference]: With dead ends: 294 [2022-12-14 05:42:48,031 INFO L226 Difference]: Without dead ends: 241 [2022-12-14 05:42:48,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:42:48,034 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 186 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:48,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1688 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 05:42:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-14 05:42:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 152. [2022-12-14 05:42:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 118 states have (on average 1.271186440677966) internal successors, (150), 135 states have internal predecessors, (150), 25 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) [2022-12-14 05:42:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 191 transitions. [2022-12-14 05:42:48,052 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 191 transitions. Word has length 37 [2022-12-14 05:42:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:42:48,052 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 191 transitions. [2022-12-14 05:42:48,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:42:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 191 transitions. [2022-12-14 05:42:48,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 05:42:48,053 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:48,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:48,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 05:42:48,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 05:42:48,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:42:48,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:48,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash -855553195, now seen corresponding path program 1 times [2022-12-14 05:42:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:42:48,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014880635] [2022-12-14 05:42:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:48,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:42:48,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:42:48,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:42:48,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 05:42:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:48,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 05:42:48,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:48,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:48,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:42:48,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014880635] [2022-12-14 05:42:48,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014880635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:48,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1268108665] [2022-12-14 05:42:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:48,816 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:42:48,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:42:48,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:42:48,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-12-14 05:42:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:49,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 05:42:49,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:49,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:49,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1268108665] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:49,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124543499] [2022-12-14 05:42:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:49,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:42:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:42:49,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:42:49,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:42:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:49,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 05:42:49,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:49,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:42:49,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124543499] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:49,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:42:49,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 6 [2022-12-14 05:42:49,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502071307] [2022-12-14 05:42:49,505 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:42:49,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:42:49,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:42:49,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:42:49,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:42:49,506 INFO L87 Difference]: Start difference. First operand 152 states and 191 transitions. Second operand has 6 states, 4 states have (on average 8.0) internal successors, (32), 6 states have internal predecessors, (32), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 05:42:49,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:49,616 INFO L93 Difference]: Finished difference Result 280 states and 365 transitions. [2022-12-14 05:42:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:42:49,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.0) internal successors, (32), 6 states have internal predecessors, (32), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 40 [2022-12-14 05:42:49,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:49,618 INFO L225 Difference]: With dead ends: 280 [2022-12-14 05:42:49,618 INFO L226 Difference]: Without dead ends: 131 [2022-12-14 05:42:49,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:42:49,619 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 16 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:49,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 548 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:42:49,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-14 05:42:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-12-14 05:42:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 96 states have (on average 1.2708333333333333) internal successors, (122), 114 states have internal predecessors, (122), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 05:42:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2022-12-14 05:42:49,628 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 40 [2022-12-14 05:42:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:42:49,628 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2022-12-14 05:42:49,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.0) internal successors, (32), 6 states have internal predecessors, (32), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 05:42:49,628 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2022-12-14 05:42:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-14 05:42:49,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:49,630 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:49,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-12-14 05:42:49,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-14 05:42:50,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:42:50,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:42:50,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1380488684, now seen corresponding path program 1 times [2022-12-14 05:42:50,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:42:50,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534658314] [2022-12-14 05:42:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:50,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:42:50,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:42:50,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:42:50,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 05:42:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:50,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 05:42:50,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:50,660 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:42:50,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:42:50,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:42:50,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:42:50,727 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 05:42:50,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 26 [2022-12-14 05:42:50,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2022-12-14 05:42:51,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:42:51,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 66 [2022-12-14 05:42:51,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:42:51,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-14 05:42:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-14 05:42:51,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:51,759 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:42:51,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2022-12-14 05:42:51,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2022-12-14 05:42:51,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2022-12-14 05:42:51,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 05:42:51,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-14 05:42:51,874 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:42:51,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 215 [2022-12-14 05:42:51,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2022-12-14 05:42:51,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 238 [2022-12-14 05:42:51,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 05:42:51,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-14 05:42:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-14 05:42:52,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:42:52,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534658314] [2022-12-14 05:42:52,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534658314] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:52,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1691832632] [2022-12-14 05:42:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:52,048 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:42:52,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:42:52,049 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:42:52,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 05:42:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:52,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 05:42:52,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:52,636 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:42:52,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:42:52,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:42:52,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:42:52,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:42:52,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:42:52,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 9 [2022-12-14 05:42:52,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 05:42:52,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-14 05:42:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-14 05:42:52,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:53,307 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:42:53,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2022-12-14 05:42:53,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2022-12-14 05:42:53,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2022-12-14 05:42:53,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 05:42:53,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-14 05:42:53,398 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:42:53,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2022-12-14 05:42:53,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2022-12-14 05:42:53,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2022-12-14 05:42:53,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 05:42:53,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-14 05:42:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-14 05:42:53,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1691832632] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:53,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385058725] [2022-12-14 05:42:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:53,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:42:53,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:42:53,591 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:42:53,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:42:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:53,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 05:42:53,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:53,861 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:42:53,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:42:53,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:42:53,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:42:53,927 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-12-14 05:42:53,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2022-12-14 05:42:53,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-12-14 05:42:54,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-14 05:42:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-14 05:42:54,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:54,599 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:42:54,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2022-12-14 05:42:54,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2022-12-14 05:42:54,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2022-12-14 05:42:54,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 05:42:54,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-14 05:42:54,690 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:42:54,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 215 [2022-12-14 05:42:54,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 242 [2022-12-14 05:42:54,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 238 [2022-12-14 05:42:54,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 05:42:54,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-14 05:42:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-14 05:42:54,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385058725] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:54,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:42:54,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16, 15, 15, 15] total 20 [2022-12-14 05:42:54,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662315386] [2022-12-14 05:42:54,874 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:42:54,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 05:42:54,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:42:54,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 05:42:54,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=334, Unknown=4, NotChecked=0, Total=380 [2022-12-14 05:42:54,877 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand has 20 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 6 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (13), 9 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 05:42:56,939 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))) (let ((.cse0 (not (= .cse1 (_ bv0 32))))) (and .cse0 (= |c_dll_create_generic_~#dll~0.offset| (_ bv0 32)) (or (and .cse0 (= .cse1 |c_dll_create_generic_~#dll~0.base|)) (and .cse0 (exists ((v_DerPreprocessor_1 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_2 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= (select |c_#memory_$Pointer$.base| .cse1) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_1) |c_dll_create_generic_~#dll~0.base| v_DerPreprocessor_2) .cse1 v_DerPreprocessor_1) |c_dll_create_generic_~#dll~0.base| v_DerPreprocessor_2) .cse1)) (= .cse1 (select v_DerPreprocessor_2 |c_dll_create_generic_~#dll~0.offset|))))))))) is different from true [2022-12-14 05:42:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:57,567 INFO L93 Difference]: Finished difference Result 251 states and 313 transitions. [2022-12-14 05:42:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 05:42:57,568 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 6 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (13), 9 states have call predecessors, (13), 4 states have call successors, (13) Word has length 107 [2022-12-14 05:42:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:57,570 INFO L225 Difference]: With dead ends: 251 [2022-12-14 05:42:57,570 INFO L226 Difference]: Without dead ends: 196 [2022-12-14 05:42:57,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 617 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=666, Unknown=8, NotChecked=52, Total=812 [2022-12-14 05:42:57,572 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 182 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 13 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:57,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 2060 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 798 Invalid, 36 Unknown, 30 Unchecked, 2.3s Time] [2022-12-14 05:42:57,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-12-14 05:42:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2022-12-14 05:42:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 138 states have internal predecessors, (155), 28 states have call successors, (28), 10 states have call predecessors, (28), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 05:42:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 197 transitions. [2022-12-14 05:42:57,594 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 197 transitions. Word has length 107 [2022-12-14 05:42:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:42:57,594 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 197 transitions. [2022-12-14 05:42:57,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 6 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (13), 9 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 05:42:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 197 transitions. [2022-12-14 05:42:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 05:42:57,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:57,597 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:57,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 05:42:57,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 05:42:58,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-12-14 05:42:58,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:42:58,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:58,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2083518563, now seen corresponding path program 1 times [2022-12-14 05:42:58,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:42:58,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304363163] [2022-12-14 05:42:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:58,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:42:58,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:42:58,209 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:42:58,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 05:42:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:58,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 05:42:58,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:58,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 05:42:58,839 WARN L859 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| (_ BitVec 32)) (v_ArrVal_1340 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1341 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1341) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)) (= (_ bv0 1) (select |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base|)) (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1340) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2022-12-14 05:42:58,965 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-14 05:42:58,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2022-12-14 05:42:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 05:42:58,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:42:58,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:42:58,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304363163] [2022-12-14 05:42:58,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304363163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:42:58,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:42:58,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 05:42:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339869559] [2022-12-14 05:42:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:42:58,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 05:42:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:42:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 05:42:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=49, Unknown=5, NotChecked=14, Total=90 [2022-12-14 05:42:58,968 INFO L87 Difference]: Start difference. First operand 159 states and 197 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-14 05:43:00,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:00,319 INFO L93 Difference]: Finished difference Result 317 states and 401 transitions. [2022-12-14 05:43:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:43:00,319 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) Word has length 110 [2022-12-14 05:43:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:00,320 INFO L225 Difference]: With dead ends: 317 [2022-12-14 05:43:00,320 INFO L226 Difference]: Without dead ends: 163 [2022-12-14 05:43:00,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=49, Unknown=5, NotChecked=14, Total=90 [2022-12-14 05:43:00,321 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 40 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 17 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:00,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 344 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 426 Invalid, 20 Unknown, 152 Unchecked, 1.3s Time] [2022-12-14 05:43:00,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-12-14 05:43:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-12-14 05:43:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 125 states have (on average 1.264) internal successors, (158), 142 states have internal predecessors, (158), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (16), 12 states have call predecessors, (16), 14 states have call successors, (16) [2022-12-14 05:43:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 202 transitions. [2022-12-14 05:43:00,336 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 202 transitions. Word has length 110 [2022-12-14 05:43:00,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:00,336 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 202 transitions. [2022-12-14 05:43:00,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-14 05:43:00,336 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 202 transitions. [2022-12-14 05:43:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 05:43:00,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:00,341 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:43:00,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 05:43:00,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:43:00,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:43:00,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:00,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1464901529, now seen corresponding path program 1 times [2022-12-14 05:43:00,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:43:00,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962452431] [2022-12-14 05:43:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:00,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:43:00,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:43:00,550 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:43:00,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 05:43:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:00,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-14 05:43:00,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:01,119 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:43:01,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:43:01,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:01,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:43:01,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:01,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:01,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 9 [2022-12-14 05:43:01,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 05:43:01,614 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:43:01,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:43:01,709 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:43:01,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:43:01,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:01,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:01,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:43:01,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:01,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 15 [2022-12-14 05:43:01,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:43:01,893 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 05:43:01,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 32 [2022-12-14 05:43:01,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-12-14 05:43:01,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:43:02,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 84 [2022-12-14 05:43:02,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77 [2022-12-14 05:43:02,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:43:02,520 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 05:43:02,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 13 [2022-12-14 05:43:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 29 proven. 25 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-14 05:43:02,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:06,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2022-12-14 05:43:06,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2022-12-14 05:43:06,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 62 [2022-12-14 05:43:06,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 60 [2022-12-14 05:43:06,044 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_dll_insert_master_alloc_or_die_master_#res#1.base_116| (_ BitVec 32)) (v_ArrVal_1647 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |v_dll_insert_master_alloc_or_die_master_#res#1.base_116| |c_dll_create_generic_~#dll~0.base|) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |v_dll_insert_master_alloc_or_die_master_#res#1.base_116| v_ArrVal_1647) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))))) (forall ((v_ArrVal_1647 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| (_ bv0 32) v_ArrVal_1647) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) (_ bv0 32)))) (or (= |c_dll_create_generic_~#dll~0.offset| (_ bv0 32)) (forall ((|v_dll_insert_master_alloc_or_die_master_#res#1.base_116| (_ BitVec 32)) (v_ArrVal_1647 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |v_dll_insert_master_alloc_or_die_master_#res#1.base_116| v_ArrVal_1647) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|)))))) is different from false [2022-12-14 05:43:06,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:43:06,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962452431] [2022-12-14 05:43:06,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962452431] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:06,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1933543035] [2022-12-14 05:43:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:06,047 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:43:06,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:43:06,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:43:06,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-12-14 05:43:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:07,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-14 05:43:07,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:07,639 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:43:07,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:43:07,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:07,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:43:07,684 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 05:43:07,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 26 [2022-12-14 05:43:07,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2022-12-14 05:43:07,701 WARN L859 $PredicateComparison]: unable to prove that (and (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_dll_insert_master_#in~dll#1.base|) |c_dll_insert_master_#in~dll#1.offset|))) (let ((.cse0 (not (= .cse1 (_ bv0 32))))) (or (and .cse0 (= |c_dll_insert_master_#in~dll#1.base| .cse1)) (and (exists ((v_DerPreprocessor_16 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_15 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= .cse1 (select v_DerPreprocessor_16 |c_dll_insert_master_#in~dll#1.offset|)) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_15) |c_dll_insert_master_#in~dll#1.base| v_DerPreprocessor_16) .cse1 v_DerPreprocessor_15) |c_dll_insert_master_#in~dll#1.base| v_DerPreprocessor_16) .cse1) (select |c_#memory_$Pointer$.base| .cse1)))) .cse0)))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-12-14 05:43:07,744 WARN L859 $PredicateComparison]: unable to prove that (and (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|))) (let ((.cse1 (not (= .cse0 (_ bv0 32))))) (or (and (exists ((v_DerPreprocessor_16 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_15 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= (select |c_#memory_$Pointer$.base| .cse0) (select (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_15) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base| v_DerPreprocessor_16) .cse0 v_DerPreprocessor_15) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base| v_DerPreprocessor_16) .cse0)) (= .cse0 (select v_DerPreprocessor_16 |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) .cse1) (and .cse1 (= .cse0 |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|))))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-12-14 05:43:07,926 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:43:07,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54 [2022-12-14 05:43:07,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-14 05:43:08,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-12-14 05:43:08,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-14 05:43:09,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:43:09,030 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:43:09,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 51 [2022-12-14 05:43:09,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2022-12-14 05:43:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 80 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 12 not checked. [2022-12-14 05:43:09,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:09,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1933543035] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:09,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730909161] [2022-12-14 05:43:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:09,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:09,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:09,623 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:09,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 05:43:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:09,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-14 05:43:09,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:09,967 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:43:09,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:43:09,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:09,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:43:10,023 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-12-14 05:43:10,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2022-12-14 05:43:10,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-12-14 05:43:10,689 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:43:10,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:43:10,756 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:43:10,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:43:10,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:10,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:43:10,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:10,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:10,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 15 [2022-12-14 05:43:10,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:43:10,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 19 [2022-12-14 05:43:10,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 05:43:11,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 157 [2022-12-14 05:43:11,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 150 [2022-12-14 05:43:11,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 148 [2022-12-14 05:43:11,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 05:43:11,784 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 05:43:11,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 13 [2022-12-14 05:43:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-14 05:43:11,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:14,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2022-12-14 05:43:14,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2022-12-14 05:43:14,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 62 [2022-12-14 05:43:14,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 60 [2022-12-14 05:43:14,344 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2186 (Array (_ BitVec 32) (_ BitVec 32))) (|v_dll_insert_master_alloc_or_die_master_#res#1.base_158| (_ BitVec 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_dll_insert_master_alloc_or_die_master_#res#1.base_158| v_ArrVal_2186) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) (_ bv0 32))) (= |v_dll_insert_master_alloc_or_die_master_#res#1.base_158| |c_dll_create_generic_~#dll~0.base|) (= |v_dll_insert_master_alloc_or_die_master_#res#1.base_158| (_ bv0 32)))) (or (= |c_dll_create_generic_~#dll~0.offset| (_ bv0 32)) (forall ((v_ArrVal_2186 (Array (_ BitVec 32) (_ BitVec 32))) (|v_dll_insert_master_alloc_or_die_master_#res#1.base_158| (_ BitVec 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_dll_insert_master_alloc_or_die_master_#res#1.base_158| v_ArrVal_2186) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) (_ bv0 32))) (= |v_dll_insert_master_alloc_or_die_master_#res#1.base_158| (_ bv0 32)))))) is different from false [2022-12-14 05:43:14,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730909161] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:14,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:14,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19, 26] total 51 [2022-12-14 05:43:14,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021839143] [2022-12-14 05:43:14,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:14,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 05:43:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:43:14,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 05:43:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2994, Unknown=26, NotChecked=452, Total=3660 [2022-12-14 05:43:14,352 INFO L87 Difference]: Start difference. First operand 163 states and 202 transitions. Second operand has 51 states, 44 states have (on average 2.772727272727273) internal successors, (122), 44 states have internal predecessors, (122), 20 states have call successors, (28), 7 states have call predecessors, (28), 15 states have return successors, (27), 19 states have call predecessors, (27), 18 states have call successors, (27) [2022-12-14 05:43:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:28,372 INFO L93 Difference]: Finished difference Result 334 states and 417 transitions. [2022-12-14 05:43:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 05:43:28,373 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 44 states have (on average 2.772727272727273) internal successors, (122), 44 states have internal predecessors, (122), 20 states have call successors, (28), 7 states have call predecessors, (28), 15 states have return successors, (27), 19 states have call predecessors, (27), 18 states have call successors, (27) Word has length 110 [2022-12-14 05:43:28,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:28,374 INFO L225 Difference]: With dead ends: 334 [2022-12-14 05:43:28,374 INFO L226 Difference]: Without dead ends: 175 [2022-12-14 05:43:28,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 319 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=420, Invalid=5391, Unknown=57, NotChecked=612, Total=6480 [2022-12-14 05:43:28,376 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 180 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 3460 mSolverCounterSat, 66 mSolverCounterUnsat, 161 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 4028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3460 IncrementalHoareTripleChecker+Invalid, 161 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:28,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2790 Invalid, 4028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3460 Invalid, 161 Unknown, 341 Unchecked, 10.8s Time] [2022-12-14 05:43:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-12-14 05:43:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2022-12-14 05:43:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 127 states have (on average 1.2519685039370079) internal successors, (159), 146 states have internal predecessors, (159), 29 states have call successors, (29), 10 states have call predecessors, (29), 11 states have return successors, (19), 13 states have call predecessors, (19), 15 states have call successors, (19) [2022-12-14 05:43:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 207 transitions. [2022-12-14 05:43:28,390 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 207 transitions. Word has length 110 [2022-12-14 05:43:28,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:28,390 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 207 transitions. [2022-12-14 05:43:28,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 44 states have (on average 2.772727272727273) internal successors, (122), 44 states have internal predecessors, (122), 20 states have call successors, (28), 7 states have call predecessors, (28), 15 states have return successors, (27), 19 states have call predecessors, (27), 18 states have call successors, (27) [2022-12-14 05:43:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 207 transitions. [2022-12-14 05:43:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 05:43:28,391 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:28,391 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:43:28,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-12-14 05:43:28,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 05:43:28,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 05:43:28,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:28,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:43:28,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:28,997 INFO L85 PathProgramCache]: Analyzing trace with hash -73438501, now seen corresponding path program 1 times [2022-12-14 05:43:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:43:28,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806578514] [2022-12-14 05:43:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:28,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:43:29,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:43:29,001 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:43:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0324a11-bb74-4407-b1ac-d22376545e4f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 05:43:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:29,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 145 conjunts are in the unsatisfiable core [2022-12-14 05:43:29,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:29,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 05:43:30,053 WARN L859 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_2392 (_ BitVec 1))) (= (store |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2392) |c_#valid|)) (= (_ bv0 1) (select |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base|)))) is different from true [2022-12-14 05:43:42,382 INFO L321 Elim1Store]: treesize reduction 135, result has 27.8 percent of original size [2022-12-14 05:43:42,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 72 treesize of output 107 [2022-12-14 05:43:42,486 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:43:42,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:43:42,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:43:42,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:43:42,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 19 [2022-12-14 05:43:42,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 05:43:57,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:44:07,706 WARN L859 $PredicateComparison]: unable to prove that (and (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))) (exists ((v_ArrVal_2406 (Array (_ BitVec 32) (_ BitVec 32))) (|##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| (_ BitVec 32)) (v_ArrVal_2404 (_ BitVec 1))) (and (= (select |c_old(#valid)| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base|) (_ bv0 1)) (= (store |c_old(#valid)| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| v_ArrVal_2404) |c_#valid|) (= |c_#memory_$Pointer$.base| (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| v_ArrVal_2406))) (store .cse0 |c_##fun~$Pointer$~TO~VOID_#in~10#1.base| (store (select .cse0 |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base|))))))) is different from true [2022-12-14 05:44:09,884 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-14 05:44:09,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-12-14 05:44:13,231 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 05:44:13,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-12-14 05:44:13,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:44:13,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 05:44:14,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:44:14,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-12-14 05:44:14,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 05:44:14,477 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:44:14,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 161 [2022-12-14 05:44:53,661 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)