./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1012a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1012a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9 --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 d5bcd8424024d71373d5028b594bdff9bfc267f48b2d86922f4388a4f67cbbe0 --- 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-6b4ec56 [2022-11-20 20:42:14,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:42:14,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:42:14,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:42:14,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:42:14,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:42:14,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:42:14,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:42:14,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:42:14,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:42:14,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:42:14,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:42:14,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:42:14,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:42:14,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:42:14,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:42:14,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:42:14,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:42:14,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:42:14,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:42:14,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:42:14,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:42:14,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:42:14,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:42:14,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:42:14,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:42:14,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:42:14,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:42:14,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:42:14,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:42:14,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:42:14,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:42:14,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:42:14,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:42:14,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:42:14,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:42:14,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:42:14,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:42:14,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:42:14,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:42:14,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:42:14,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:42:14,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:42:14,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:42:14,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:42:14,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:42:14,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:42:14,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:42:14,249 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:42:14,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:42:14,250 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:42:14,250 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:42:14,250 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:42:14,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:42:14,251 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:42:14,251 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:42:14,251 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:42:14,252 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:42:14,252 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:42:14,252 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:42:14,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:42:14,253 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:42:14,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:42:14,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:42:14,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:42:14,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:42:14,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:42:14,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:42:14,255 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:42:14,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:42:14,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:42:14,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:42:14,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:42:14,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:42:14,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:42:14,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:42:14,257 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:42:14,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:42:14,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:42:14,258 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:42:14,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:42:14,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:42:14,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:42:14,259 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_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5bcd8424024d71373d5028b594bdff9bfc267f48b2d86922f4388a4f67cbbe0 [2022-11-20 20:42:14,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:42:14,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:42:14,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:42:14,618 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:42:14,620 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:42:14,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/float_req_bl_1012a.c [2022-11-20 20:42:18,240 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:42:18,583 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:42:18,584 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/sv-benchmarks/c/float-newlib/float_req_bl_1012a.c [2022-11-20 20:42:18,595 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/data/d5ba1a5e0/1e86eda0e1a845e4a8f6052cbc076baa/FLAG1951ab70f [2022-11-20 20:42:18,617 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/data/d5ba1a5e0/1e86eda0e1a845e4a8f6052cbc076baa [2022-11-20 20:42:18,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:42:18,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:42:18,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:42:18,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:42:18,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:42:18,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:18,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73457ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18, skipping insertion in model container [2022-11-20 20:42:18,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:18,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:42:18,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:42:18,920 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_b6d56d49-914d-46ff-a30a-9cd5a1e90412/sv-benchmarks/c/float-newlib/float_req_bl_1012a.c[1156,1169] [2022-11-20 20:42:18,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:42:18,942 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:42:18,962 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_b6d56d49-914d-46ff-a30a-9cd5a1e90412/sv-benchmarks/c/float-newlib/float_req_bl_1012a.c[1156,1169] [2022-11-20 20:42:18,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:42:18,981 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:42:18,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18 WrapperNode [2022-11-20 20:42:18,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:42:18,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:42:18,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:42:18,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:42:18,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,021 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-20 20:42:19,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:42:19,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:42:19,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:42:19,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:42:19,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:42:19,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:42:19,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:42:19,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:42:19,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (1/1) ... [2022-11-20 20:42:19,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:42:19,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:42:19,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:42:19,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:42:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:42:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:42:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:42:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-20 20:42:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:42:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-20 20:42:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:42:19,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:42:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:42:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:42:19,326 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:42:19,329 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:42:19,584 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:42:19,609 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:42:19,609 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 20:42:19,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:42:19 BoogieIcfgContainer [2022-11-20 20:42:19,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:42:19,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:42:19,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:42:19,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:42:19,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:42:18" (1/3) ... [2022-11-20 20:42:19,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3671865e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:42:19, skipping insertion in model container [2022-11-20 20:42:19,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:18" (2/3) ... [2022-11-20 20:42:19,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3671865e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:42:19, skipping insertion in model container [2022-11-20 20:42:19,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:42:19" (3/3) ... [2022-11-20 20:42:19,625 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a.c [2022-11-20 20:42:19,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:42:19,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:42:19,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:42:19,804 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;@2dd7e024, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:42:19,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:42:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:42:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:42:19,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:42:19,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:42:19,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:42:19,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:42:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1051333689, now seen corresponding path program 1 times [2022-11-20 20:42:19,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:42:19,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295811016] [2022-11-20 20:42:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:42:19,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:42:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:42:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:42:20,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:42:20,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295811016] [2022-11-20 20:42:20,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295811016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:42:20,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:42:20,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:42:20,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785374269] [2022-11-20 20:42:20,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:42:20,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:42:20,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:42:20,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:42:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:42:20,192 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:42:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:42:20,224 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2022-11-20 20:42:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:42:20,228 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 20:42:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:42:20,239 INFO L225 Difference]: With dead ends: 27 [2022-11-20 20:42:20,239 INFO L226 Difference]: Without dead ends: 12 [2022-11-20 20:42:20,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:42:20,248 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:42:20,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:42:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-20 20:42:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 20:42:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:42:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2022-11-20 20:42:20,293 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 8 [2022-11-20 20:42:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:42:20,294 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2022-11-20 20:42:20,294 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:42:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2022-11-20 20:42:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:42:20,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:42:20,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:42:20,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:42:20,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:42:20,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:42:20,298 INFO L85 PathProgramCache]: Analyzing trace with hash 604616637, now seen corresponding path program 1 times [2022-11-20 20:42:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:42:20,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141395009] [2022-11-20 20:42:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:42:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:42:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:42:20,371 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:42:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:42:20,444 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:42:20,445 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:42:20,448 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:42:20,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:42:20,455 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 20:42:20,460 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:42:20,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:42:20 BoogieIcfgContainer [2022-11-20 20:42:20,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:42:20,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:42:20,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:42:20,503 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:42:20,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:42:19" (3/4) ... [2022-11-20 20:42:20,517 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 20:42:20,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:42:20,518 INFO L158 Benchmark]: Toolchain (without parser) took 1889.66ms. Allocated memory is still 180.4MB. Free memory was 150.5MB in the beginning and 96.6MB in the end (delta: 54.0MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-20 20:42:20,518 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:42:20,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.29ms. Allocated memory is still 180.4MB. Free memory was 150.5MB in the beginning and 140.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:42:20,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.83ms. Allocated memory is still 180.4MB. Free memory was 140.1MB in the beginning and 138.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:42:20,521 INFO L158 Benchmark]: Boogie Preprocessor took 33.25ms. Allocated memory is still 180.4MB. Free memory was 138.5MB in the beginning and 137.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:42:20,521 INFO L158 Benchmark]: RCFGBuilder took 556.91ms. Allocated memory is still 180.4MB. Free memory was 137.5MB in the beginning and 124.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:42:20,522 INFO L158 Benchmark]: TraceAbstraction took 885.70ms. Allocated memory is still 180.4MB. Free memory was 123.8MB in the beginning and 97.2MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 20:42:20,526 INFO L158 Benchmark]: Witness Printer took 14.60ms. Allocated memory is still 180.4MB. Free memory was 97.2MB in the beginning and 96.6MB in the end (delta: 635.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:42:20,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.29ms. Allocated memory is still 180.4MB. Free memory was 150.5MB in the beginning and 140.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.83ms. Allocated memory is still 180.4MB. Free memory was 140.1MB in the beginning and 138.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.25ms. Allocated memory is still 180.4MB. Free memory was 138.5MB in the beginning and 137.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 556.91ms. Allocated memory is still 180.4MB. Free memory was 137.5MB in the beginning and 124.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 885.70ms. Allocated memory is still 180.4MB. Free memory was 123.8MB in the beginning and 97.2MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 14.60ms. Allocated memory is still 180.4MB. Free memory was 97.2MB in the beginning and 96.6MB in the end (delta: 635.8kB). 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: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 48, overapproximation of bitwiseAnd at line 36. Possible FailurePath: [L48] float x = 1.0f / 0.0f; [L49] CALL, EXPR fabs_float(x) [L14] __uint32_t ix; VAL [\old(x)=4294967310, x=4294967310] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (ix) = gf_u.word [L21] ieee_float_shape_type sf_u; [L22] sf_u.word = (ix & 0x7fffffff) [L23] EXPR sf_u.value [L23] (x) = sf_u.value [L25] return x; [L49] RET, EXPR fabs_float(x) [L49] float res = fabs_float(x); [L52] CALL, EXPR isinf_float(res) [L30] __int32_t ix; VAL [\old(x)=4294967309, x=4294967309] [L32] ieee_float_shape_type gf_u; [L33] gf_u.value = (x) [L34] EXPR gf_u.word [L34] (ix) = gf_u.word [L36] ix &= 0x7fffffff [L37] return ((ix) == 0x7f800000L); [L52] RET, EXPR isinf_float(res) [L52] COND TRUE !isinf_float(res) [L53] reach_error() VAL [res=4294967309, x=4294967310] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-11-20 20:42:20,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1012a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9 --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 d5bcd8424024d71373d5028b594bdff9bfc267f48b2d86922f4388a4f67cbbe0 --- 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-6b4ec56 [2022-11-20 20:42:23,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:42:23,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:42:23,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:42:23,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:42:23,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:42:23,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:42:23,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:42:23,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:42:23,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:42:23,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:42:23,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:42:23,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:42:23,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:42:23,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:42:23,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:42:23,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:42:23,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:42:23,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:42:23,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:42:23,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:42:23,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:42:23,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:42:23,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:42:23,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:42:23,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:42:23,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:42:23,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:42:23,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:42:23,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:42:23,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:42:23,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:42:23,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:42:23,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:42:23,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:42:23,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:42:23,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:42:23,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:42:23,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:42:23,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:42:23,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:42:23,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 20:42:23,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:42:23,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:42:23,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:42:23,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:42:23,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:42:23,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:42:23,845 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:42:23,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:42:23,845 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:42:23,846 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:42:23,847 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:42:23,847 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:42:23,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:42:23,849 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:42:23,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:42:23,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:42:23,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:42:23,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:42:23,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:42:23,851 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:42:23,851 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:42:23,852 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:42:23,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:42:23,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:42:23,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:42:23,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:42:23,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:42:23,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:42:23,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:42:23,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:42:23,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:42:23,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:42:23,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:42:23,856 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:42:23,856 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:42:23,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:42:23,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:42:23,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:42:23,858 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_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5bcd8424024d71373d5028b594bdff9bfc267f48b2d86922f4388a4f67cbbe0 [2022-11-20 20:42:24,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:42:24,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:42:24,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:42:24,434 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:42:24,436 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:42:24,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/float_req_bl_1012a.c [2022-11-20 20:42:28,580 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:42:28,859 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:42:28,860 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/sv-benchmarks/c/float-newlib/float_req_bl_1012a.c [2022-11-20 20:42:28,871 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/data/cdead1ca0/24a468c60c3746e39d7ca0bc5e39dd16/FLAG50e1a3f35 [2022-11-20 20:42:28,893 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/data/cdead1ca0/24a468c60c3746e39d7ca0bc5e39dd16 [2022-11-20 20:42:28,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:42:28,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:42:28,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:42:28,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:42:28,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:42:28,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:42:28" (1/1) ... [2022-11-20 20:42:28,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597d3ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:28, skipping insertion in model container [2022-11-20 20:42:28,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:42:28" (1/1) ... [2022-11-20 20:42:28,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:42:28,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:42:29,174 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_b6d56d49-914d-46ff-a30a-9cd5a1e90412/sv-benchmarks/c/float-newlib/float_req_bl_1012a.c[1156,1169] [2022-11-20 20:42:29,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:42:29,208 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:42:29,253 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_b6d56d49-914d-46ff-a30a-9cd5a1e90412/sv-benchmarks/c/float-newlib/float_req_bl_1012a.c[1156,1169] [2022-11-20 20:42:29,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:42:29,284 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:42:29,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29 WrapperNode [2022-11-20 20:42:29,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:42:29,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:42:29,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:42:29,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:42:29,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,369 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-20 20:42:29,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:42:29,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:42:29,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:42:29,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:42:29,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:42:29,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:42:29,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:42:29,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:42:29,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (1/1) ... [2022-11-20 20:42:29,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:42:29,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:42:29,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:42:29,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:42:29,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:42:29,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:42:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:42:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-20 20:42:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 20:42:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:42:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:42:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-20 20:42:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 20:42:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:42:29,724 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:42:29,726 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:42:30,019 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:42:30,031 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:42:30,031 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 20:42:30,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:42:30 BoogieIcfgContainer [2022-11-20 20:42:30,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:42:30,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:42:30,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:42:30,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:42:30,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:42:28" (1/3) ... [2022-11-20 20:42:30,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e218124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:42:30, skipping insertion in model container [2022-11-20 20:42:30,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:29" (2/3) ... [2022-11-20 20:42:30,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e218124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:42:30, skipping insertion in model container [2022-11-20 20:42:30,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:42:30" (3/3) ... [2022-11-20 20:42:30,061 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a.c [2022-11-20 20:42:30,106 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:42:30,120 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:42:30,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:42:30,240 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;@6ed97b40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:42:30,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:42:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:42:30,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:42:30,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:42:30,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:42:30,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:42:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:42:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2022-11-20 20:42:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:42:30,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468933025] [2022-11-20 20:42:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:42:30,298 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 [2022-11-20 20:42:30,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:42:30,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:42:30,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:42:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:42:30,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 20:42:30,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:42:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:42:30,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:42:30,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:42:30,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468933025] [2022-11-20 20:42:30,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468933025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:42:30,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:42:30,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:42:30,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734391175] [2022-11-20 20:42:30,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:42:30,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:42:30,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:42:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:42:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:42:30,533 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:42:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:42:30,552 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-11-20 20:42:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:42:30,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 20:42:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:42:30,565 INFO L225 Difference]: With dead ends: 34 [2022-11-20 20:42:30,566 INFO L226 Difference]: Without dead ends: 15 [2022-11-20 20:42:30,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:42:30,574 INFO L413 NwaCegarLoop]: 17 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, 17 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 [2022-11-20 20:42:30,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:42:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-20 20:42:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 20:42:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:42:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2022-11-20 20:42:30,615 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2022-11-20 20:42:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:42:30,616 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2022-11-20 20:42:30,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:42:30,617 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2022-11-20 20:42:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:42:30,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:42:30,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:42:30,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:42:30,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:42:30,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:42:30,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:42:30,824 INFO L85 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2022-11-20 20:42:30,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:42:30,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080423027] [2022-11-20 20:42:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:42:30,831 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 [2022-11-20 20:42:30,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:42:30,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:42:30,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:42:30,997 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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)] Exception during sending of exit command (exit): Broken pipe [2022-11-20 20:42:31,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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 139 [2022-11-20 20:42:31,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:42:31,199 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-20 20:42:31,203 INFO L158 Benchmark]: Toolchain (without parser) took 2304.22ms. Allocated memory is still 69.2MB. Free memory was 49.6MB in the beginning and 38.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-11-20 20:42:31,204 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 56.6MB. Free memory is still 34.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:42:31,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.07ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 38.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:42:31,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.48ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 36.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:42:31,206 INFO L158 Benchmark]: Boogie Preprocessor took 80.06ms. Allocated memory is still 69.2MB. Free memory was 36.9MB in the beginning and 35.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:42:31,207 INFO L158 Benchmark]: RCFGBuilder took 581.98ms. Allocated memory is still 69.2MB. Free memory was 35.4MB in the beginning and 40.8MB in the end (delta: -5.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-11-20 20:42:31,215 INFO L158 Benchmark]: TraceAbstraction took 1165.12ms. Allocated memory is still 69.2MB. Free memory was 40.3MB in the beginning and 38.3MB in the end (delta: 2.0MB). Peak memory consumption was 850.6kB. Max. memory is 16.1GB. [2022-11-20 20:42:31,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 56.6MB. Free memory is still 34.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.07ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 38.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.48ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 36.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.06ms. Allocated memory is still 69.2MB. Free memory was 36.9MB in the beginning and 35.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 581.98ms. Allocated memory is still 69.2MB. Free memory was 35.4MB in the beginning and 40.8MB in the end (delta: -5.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1165.12ms. Allocated memory is still 69.2MB. Free memory was 40.3MB in the beginning and 38.3MB in the end (delta: 2.0MB). Peak memory consumption was 850.6kB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-20 20:42:31,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d56d49-914d-46ff-a30a-9cd5a1e90412/bin/utaipan-6cKwYrpEi9/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) with exit command (exit)) Received EOF on stdin. No stderr output.