./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c --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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 644fedc149cdfea0c0b39babfd09647f4fb573c27a060d8d57a08553303664a9 --- 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 03:19:15,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:19:15,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:19:15,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:19:15,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:19:15,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:19:15,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:19:15,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:19:15,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:19:15,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:19:15,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:19:15,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:19:15,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:19:15,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:19:15,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:19:15,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:19:15,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:19:15,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:19:15,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:19:15,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:19:15,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:19:15,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:19:15,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:19:15,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:19:15,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:19:15,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:19:15,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:19:15,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:19:15,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:19:15,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:19:15,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:19:15,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:19:15,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:19:15,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:19:15,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:19:15,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:19:15,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:19:15,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:19:15,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:19:15,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:19:15,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:19:15,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 03:19:15,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:19:15,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:19:15,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:19:15,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:19:15,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:19:15,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:19:15,958 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:19:15,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:19:15,958 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:19:15,958 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:19:15,959 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:19:15,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:19:15,959 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:19:15,959 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:19:15,959 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:19:15,959 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:19:15,960 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:19:15,960 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:19:15,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:19:15,960 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:19:15,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:19:15,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:19:15,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:19:15,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:19:15,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:19:15,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:19:15,961 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:19:15,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:19:15,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:19:15,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:19:15,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:19:15,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:19:15,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:19:15,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:19:15,963 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:19:15,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:19:15,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:19:15,963 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:19:15,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:19:15,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:19:15,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:19:15,964 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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 644fedc149cdfea0c0b39babfd09647f4fb573c27a060d8d57a08553303664a9 [2022-12-14 03:19:16,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:19:16,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:19:16,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:19:16,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:19:16,185 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:19:16,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2022-12-14 03:19:18,876 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:19:19,051 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:19:19,051 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2022-12-14 03:19:19,056 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/data/d5f62c6be/1f333f920bec4d0194222a921097d647/FLAGc58b32b81 [2022-12-14 03:19:19,070 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/data/d5f62c6be/1f333f920bec4d0194222a921097d647 [2022-12-14 03:19:19,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:19:19,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:19:19,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:19:19,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:19:19,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:19:19,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ae41f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19, skipping insertion in model container [2022-12-14 03:19:19,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:19:19,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:19:19,240 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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c[709,722] [2022-12-14 03:19:19,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:19:19,261 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:19:19,269 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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c[709,722] [2022-12-14 03:19:19,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:19:19,284 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:19:19,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19 WrapperNode [2022-12-14 03:19:19,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:19:19,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:19:19,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:19:19,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:19:19,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,308 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-12-14 03:19:19,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:19:19,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:19:19,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:19:19,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:19:19,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:19:19,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:19:19,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:19:19,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:19:19,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (1/1) ... [2022-12-14 03:19:19,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:19:19,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:19:19,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:19:19,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:19:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:19:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 03:19:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:19:19,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:19:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 03:19:19,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 03:19:19,433 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:19:19,435 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:19:19,519 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:19:19,539 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:19:19,539 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 03:19:19,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:19:19 BoogieIcfgContainer [2022-12-14 03:19:19,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:19:19,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:19:19,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:19:19,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:19:19,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:19:19" (1/3) ... [2022-12-14 03:19:19,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:19:19, skipping insertion in model container [2022-12-14 03:19:19,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:19" (2/3) ... [2022-12-14 03:19:19,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:19:19, skipping insertion in model container [2022-12-14 03:19:19,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:19:19" (3/3) ... [2022-12-14 03:19:19,547 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_valuebound5.c [2022-12-14 03:19:19,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:19:19,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 03:19:19,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:19:19,602 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;@396b75aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:19:19,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 03:19:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 03:19:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 03:19:19,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:19:19,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 03:19:19,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:19:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:19:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1499849464, now seen corresponding path program 1 times [2022-12-14 03:19:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:19:19,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382991379] [2022-12-14 03:19:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:19:19,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 03:19:19,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68215201] [2022-12-14 03:19:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:19,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:19:19,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:19:19,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:19:19,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 03:19:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:19:19,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 03:19:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:19:19,781 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 03:19:19,783 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 03:19:19,784 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 03:19:19,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 03:19:19,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:19:20,000 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 03:19:20,010 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 03:19:20,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:19:20 BoogieIcfgContainer [2022-12-14 03:19:20,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 03:19:20,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 03:19:20,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 03:19:20,058 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 03:19:20,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:19:19" (3/4) ... [2022-12-14 03:19:20,067 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 03:19:20,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 03:19:20,071 INFO L158 Benchmark]: Toolchain (without parser) took 995.39ms. Allocated memory is still 199.2MB. Free memory was 166.3MB in the beginning and 123.2MB in the end (delta: 43.2MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-12-14 03:19:20,072 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 199.2MB. Free memory was 175.4MB in the beginning and 175.3MB in the end (delta: 96.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:19:20,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.69ms. Allocated memory is still 199.2MB. Free memory was 166.3MB in the beginning and 155.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 03:19:20,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.41ms. Allocated memory is still 199.2MB. Free memory was 155.4MB in the beginning and 154.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:19:20,077 INFO L158 Benchmark]: Boogie Preprocessor took 14.75ms. Allocated memory is still 199.2MB. Free memory was 154.0MB in the beginning and 152.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:19:20,078 INFO L158 Benchmark]: RCFGBuilder took 216.80ms. Allocated memory is still 199.2MB. Free memory was 152.5MB in the beginning and 140.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 03:19:20,080 INFO L158 Benchmark]: TraceAbstraction took 512.07ms. Allocated memory is still 199.2MB. Free memory was 139.9MB in the beginning and 123.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 03:19:20,081 INFO L158 Benchmark]: Witness Printer took 11.28ms. Allocated memory is still 199.2MB. Free memory was 123.8MB in the beginning and 123.2MB in the end (delta: 638.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:19:20,089 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 199.2MB. Free memory was 175.4MB in the beginning and 175.3MB in the end (delta: 96.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.69ms. Allocated memory is still 199.2MB. Free memory was 166.3MB in the beginning and 155.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.41ms. Allocated memory is still 199.2MB. Free memory was 155.4MB in the beginning and 154.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.75ms. Allocated memory is still 199.2MB. Free memory was 154.0MB in the beginning and 152.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 216.80ms. Allocated memory is still 199.2MB. Free memory was 152.5MB in the beginning and 140.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 512.07ms. Allocated memory is still 199.2MB. Free memory was 139.9MB in the beginning and 123.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 11.28ms. Allocated memory is still 199.2MB. Free memory was 123.8MB in the beginning and 123.2MB in the end (delta: 638.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=5) [L14] COND FALSE !(!cond) [L28] RET assume_abort_if_not(a>=0 && a<=5) [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L33] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 03:19:20,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 644fedc149cdfea0c0b39babfd09647f4fb573c27a060d8d57a08553303664a9 --- 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 03:19:21,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:19:21,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:19:21,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:19:21,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:19:21,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:19:21,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:19:21,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:19:21,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:19:21,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:19:21,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:19:21,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:19:21,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:19:21,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:19:21,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:19:21,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:19:21,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:19:21,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:19:21,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:19:21,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:19:21,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:19:21,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:19:21,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:19:21,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:19:21,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:19:21,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:19:21,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:19:21,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:19:21,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:19:21,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:19:21,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:19:21,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:19:21,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:19:21,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:19:21,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:19:21,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:19:21,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:19:21,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:19:21,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:19:21,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:19:21,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:19:21,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 03:19:21,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:19:21,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:19:21,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:19:21,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:19:21,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:19:21,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:19:21,768 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:19:21,768 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:19:21,768 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:19:21,768 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:19:21,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:19:21,768 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:19:21,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:19:21,769 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:19:21,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:19:21,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:19:21,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:19:21,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:19:21,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:19:21,770 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 03:19:21,771 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 03:19:21,771 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 03:19:21,771 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:19:21,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:19:21,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:19:21,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:19:21,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:19:21,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 03:19:21,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:19:21,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:19:21,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:19:21,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:19:21,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:19:21,773 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 03:19:21,773 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 03:19:21,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:19:21,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:19:21,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 03:19:21,774 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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 644fedc149cdfea0c0b39babfd09647f4fb573c27a060d8d57a08553303664a9 [2022-12-14 03:19:22,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:19:22,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:19:22,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:19:22,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:19:22,028 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:19:22,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2022-12-14 03:19:24,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:19:24,748 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:19:24,749 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2022-12-14 03:19:24,755 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/data/04c803fd9/3c11b43e718341a28a0c002769e9eec8/FLAG55495fbd8 [2022-12-14 03:19:24,766 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/data/04c803fd9/3c11b43e718341a28a0c002769e9eec8 [2022-12-14 03:19:24,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:19:24,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:19:24,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:19:24,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:19:24,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:19:24,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:24,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aeec8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24, skipping insertion in model container [2022-12-14 03:19:24,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:24,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:19:24,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:19:24,907 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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c[709,722] [2022-12-14 03:19:24,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:19:24,941 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:19:24,951 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_b23c4cd2-e720-4ae0-971e-1bb03714edf6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c[709,722] [2022-12-14 03:19:24,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:19:24,976 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:19:24,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24 WrapperNode [2022-12-14 03:19:24,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:19:24,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:19:24,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:19:24,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:19:24,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:24,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,010 INFO L138 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-12-14 03:19:25,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:19:25,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:19:25,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:19:25,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:19:25,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:19:25,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:19:25,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:19:25,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:19:25,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (1/1) ... [2022-12-14 03:19:25,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:19:25,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:19:25,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:19:25,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:19:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:19:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 03:19:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:19:25,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:19:25,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 03:19:25,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 03:19:25,150 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:19:25,152 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:19:27,531 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:19:27,535 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:19:27,535 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 03:19:27,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:19:27 BoogieIcfgContainer [2022-12-14 03:19:27,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:19:27,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:19:27,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:19:27,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:19:27,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:19:24" (1/3) ... [2022-12-14 03:19:27,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263130f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:19:27, skipping insertion in model container [2022-12-14 03:19:27,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:24" (2/3) ... [2022-12-14 03:19:27,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263130f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:19:27, skipping insertion in model container [2022-12-14 03:19:27,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:19:27" (3/3) ... [2022-12-14 03:19:27,542 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_valuebound5.c [2022-12-14 03:19:27,555 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:19:27,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 03:19:27,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:19:27,592 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;@23b46345, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:19:27,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 03:19:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 03:19:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 03:19:27,600 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:19:27,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:19:27,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:19:27,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:19:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2022-12-14 03:19:27,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:19:27,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098869459] [2022-12-14 03:19:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:27,614 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 03:19:27,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:19:27,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:19:27,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:19:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:19:27,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 03:19:27,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:19:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:19:27,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:19:27,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:19:27,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098869459] [2022-12-14 03:19:27,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098869459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:19:27,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:19:27,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:19:27,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643068743] [2022-12-14 03:19:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:19:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 03:19:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:19:27,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 03:19:27,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 03:19:27,838 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:19:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:19:27,859 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2022-12-14 03:19:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 03:19:27,861 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 03:19:27,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:19:27,866 INFO L225 Difference]: With dead ends: 41 [2022-12-14 03:19:27,866 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 03:19:27,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 03:19:27,872 INFO L413 NwaCegarLoop]: 27 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, 27 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 03:19:27,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:19:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 03:19:27,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 03:19:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 03:19:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-12-14 03:19:27,900 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-12-14 03:19:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:19:27,900 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-12-14 03:19:27,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:19:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-12-14 03:19:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 03:19:27,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:19:27,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:19:27,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:19:28,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:19:28,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:19:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:19:28,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2022-12-14 03:19:28,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:19:28,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736999591] [2022-12-14 03:19:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:28,112 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 03:19:28,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:19:28,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:19:28,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:19:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:19:28,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 03:19:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:19:28,378 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-12-14 03:19:28,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1474322523] [2022-12-14 03:19:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:28,379 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 03:19:28,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 03:19:28,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 03:19:28,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 03:19:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:19:28,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 03:19:28,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:19:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:19:28,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:19:28,636 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:19:28,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736999591] [2022-12-14 03:19:28,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 03:19:28,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1474322523] [2022-12-14 03:19:28,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1474322523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:19:28,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:19:28,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:19:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080834032] [2022-12-14 03:19:28,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:19:28,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:19:28,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:19:28,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:19:28,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 03:19:28,640 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:19:31,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:19:32,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:19:35,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:19:37,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:19:39,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:19:42,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:19:45,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:19:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:19:45,038 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-12-14 03:19:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:19:45,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 03:19:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:19:45,138 INFO L225 Difference]: With dead ends: 33 [2022-12-14 03:19:45,138 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 03:19:45,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:19:45,140 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:19:45,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 70 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 6 Unknown, 0 Unchecked, 16.3s Time] [2022-12-14 03:19:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 03:19:45,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-12-14 03:19:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 03:19:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-12-14 03:19:45,148 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 9 [2022-12-14 03:19:45,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:19:45,149 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-12-14 03:19:45,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:19:45,149 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-12-14 03:19:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 03:19:45,149 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:19:45,150 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:19:45,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 03:19:45,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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)] Forceful destruction successful, exit code 0 [2022-12-14 03:19:45,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:19:45,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:19:45,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:19:45,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1170702338, now seen corresponding path program 1 times [2022-12-14 03:19:45,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:19:45,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217264375] [2022-12-14 03:19:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:45,557 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 03:19:45,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:19:45,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:19:45,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:19:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:19:45,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 03:19:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:19:46,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-12-14 03:19:46,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [150211862] [2022-12-14 03:19:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:46,168 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 03:19:46,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 03:19:46,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 03:19:46,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-12-14 03:19:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:19:46,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 03:19:46,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:19:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:19:48,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:19:54,362 WARN L837 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|))) is different from false [2022-12-14 03:20:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:20:24,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:20:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217264375] [2022-12-14 03:20:24,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 03:20:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [150211862] [2022-12-14 03:20:24,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [150211862] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 03:20:24,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:20:24,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-12-14 03:20:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112147100] [2022-12-14 03:20:24,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:20:24,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 03:20:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:20:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 03:20:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=100, Unknown=1, NotChecked=20, Total=156 [2022-12-14 03:20:24,352 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 03:20:28,550 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv0 32)) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)))))) is different from false [2022-12-14 03:20:30,599 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv0 32)) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)))))) is different from true [2022-12-14 03:20:35,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:20:37,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:20:39,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:20:41,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:20:44,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:20:46,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:20:48,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:20:50,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 03:20:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:20:50,787 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-12-14 03:20:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 03:20:50,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-12-14 03:20:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:20:50,914 INFO L225 Difference]: With dead ends: 31 [2022-12-14 03:20:50,914 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 03:20:50,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=41, Invalid=120, Unknown=3, NotChecked=46, Total=210 [2022-12-14 03:20:50,915 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2022-12-14 03:20:50,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 70 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 7 Unknown, 22 Unchecked, 20.9s Time] [2022-12-14 03:20:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 03:20:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 03:20:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 03:20:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-12-14 03:20:50,923 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 14 [2022-12-14 03:20:50,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:20:50,923 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-12-14 03:20:50,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 03:20:50,924 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-12-14 03:20:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 03:20:50,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:20:50,924 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:20:50,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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)] Ended with exit code 0 [2022-12-14 03:20:51,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-12-14 03:20:51,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 03:20:51,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:20:51,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:20:51,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1035962748, now seen corresponding path program 1 times [2022-12-14 03:20:51,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:20:51,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345876477] [2022-12-14 03:20:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:20:51,330 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 03:20:51,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:20:51,334 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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 03:20:51,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/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)] Waiting until timeout for monitored process [2022-12-14 03:20:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:20:57,144 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 03:20:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:20:58,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2022-12-14 03:20:58,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1394389549] [2022-12-14 03:20:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:20:58,897 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 03:20:58,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 03:20:58,898 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 03:20:58,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b23c4cd2-e720-4ae0-971e-1bb03714edf6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-12-14 03:21:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:21:34,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 03:22:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat