./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0480.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0480.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta --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 f90b1d640a2990a6a85e9cd8b829ad481f01a2281537af5797be61836c0e0f27 --- 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-dbf71c6-m [2022-10-17 17:40:10,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:40:10,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:40:10,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:40:10,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:40:10,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:40:10,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:40:10,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:40:10,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:40:10,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:40:10,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:40:10,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:40:10,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:40:10,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:40:10,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:40:10,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:40:10,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:40:10,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:40:10,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:40:10,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:40:10,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:40:10,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:40:10,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:40:10,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:40:10,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:40:10,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:40:10,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:40:10,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:40:10,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:40:10,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:40:10,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:40:10,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:40:10,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:40:10,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:40:10,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:40:10,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:40:10,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:40:10,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:40:10,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:40:10,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:40:10,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:40:10,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:40:10,283 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:40:10,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:40:10,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:40:10,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:40:10,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:40:10,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:40:10,288 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:40:10,288 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:40:10,289 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:40:10,289 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:40:10,290 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:40:10,290 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:40:10,291 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:40:10,291 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:40:10,291 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:40:10,291 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:40:10,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:40:10,292 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:40:10,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:40:10,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:40:10,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:40:10,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:40:10,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:40:10,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:40:10,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:40:10,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:40:10,295 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:40:10,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:40:10,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:40:10,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:40:10,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:40:10,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:40:10,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:10,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:40:10,297 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:40:10,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:40:10,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:40:10,297 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:40:10,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:40:10,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:40:10,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:40:10,298 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_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f90b1d640a2990a6a85e9cd8b829ad481f01a2281537af5797be61836c0e0f27 [2022-10-17 17:40:10,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:40:10,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:40:10,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:40:10,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:40:10,624 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:40:10,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-newlib/double_req_bl_0480.c [2022-10-17 17:40:10,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data/8f025ad24/21efd3dce0dc4d25bdb0d59fdac3d26e/FLAG29d13ddce [2022-10-17 17:40:11,319 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:40:11,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/sv-benchmarks/c/float-newlib/double_req_bl_0480.c [2022-10-17 17:40:11,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data/8f025ad24/21efd3dce0dc4d25bdb0d59fdac3d26e/FLAG29d13ddce [2022-10-17 17:40:11,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data/8f025ad24/21efd3dce0dc4d25bdb0d59fdac3d26e [2022-10-17 17:40:11,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:40:11,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:40:11,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:11,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:40:11,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:40:11,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:11" (1/1) ... [2022-10-17 17:40:11,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a715fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:11, skipping insertion in model container [2022-10-17 17:40:11,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:11" (1/1) ... [2022-10-17 17:40:11,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:40:11,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:40:11,977 WARN L230 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_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/sv-benchmarks/c/float-newlib/double_req_bl_0480.c[5882,5895] [2022-10-17 17:40:11,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:11,990 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:40:12,042 WARN L230 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_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/sv-benchmarks/c/float-newlib/double_req_bl_0480.c[5882,5895] [2022-10-17 17:40:12,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:12,058 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:40:12,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12 WrapperNode [2022-10-17 17:40:12,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:12,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:12,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:40:12,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:40:12,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,139 INFO L138 Inliner]: procedures = 17, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 161 [2022-10-17 17:40:12,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:12,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:40:12,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:40:12,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:40:12,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:40:12,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:40:12,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:40:12,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:40:12,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (1/1) ... [2022-10-17 17:40:12,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:12,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:12,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:40:12,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:40:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:40:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:40:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:40:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 17:40:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:40:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2022-10-17 17:40:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2022-10-17 17:40:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 17:40:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:40:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:40:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:40:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:40:12,482 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:40:12,484 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:40:13,319 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:40:13,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:40:13,763 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-17 17:40:13,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:13 BoogieIcfgContainer [2022-10-17 17:40:13,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:40:13,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:40:13,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:40:13,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:40:13,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:40:11" (1/3) ... [2022-10-17 17:40:13,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5cdce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:13, skipping insertion in model container [2022-10-17 17:40:13,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:12" (2/3) ... [2022-10-17 17:40:13,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5cdce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:13, skipping insertion in model container [2022-10-17 17:40:13,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:13" (3/3) ... [2022-10-17 17:40:13,777 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0480.c [2022-10-17 17:40:13,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:40:13,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:40:13,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:40:13,865 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;@2bbc5242, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:40:13,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:40:13,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 42 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:40:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:40:13,880 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:13,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:13,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:13,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:13,887 INFO L85 PathProgramCache]: Analyzing trace with hash 219195348, now seen corresponding path program 1 times [2022-10-17 17:40:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:13,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465106406] [2022-10-17 17:40:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:13,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:14,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:14,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465106406] [2022-10-17 17:40:14,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465106406] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:14,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:14,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:14,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633899546] [2022-10-17 17:40:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:14,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:40:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:14,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:40:14,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:40:14,209 INFO L87 Difference]: Start difference. First operand has 46 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 42 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-10-17 17:40:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:14,378 INFO L93 Difference]: Finished difference Result 91 states and 145 transitions. [2022-10-17 17:40:14,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:40:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-10-17 17:40:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:14,394 INFO L225 Difference]: With dead ends: 91 [2022-10-17 17:40:14,394 INFO L226 Difference]: Without dead ends: 44 [2022-10-17 17:40:14,409 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 [2022-10-17 17:40:14,413 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:14,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-17 17:40:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-10-17 17:40:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:40:14,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2022-10-17 17:40:14,459 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 9 [2022-10-17 17:40:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:14,460 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2022-10-17 17:40:14,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-10-17 17:40:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2022-10-17 17:40:14,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:40:14,461 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:14,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:14,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:40:14,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash 391710636, now seen corresponding path program 1 times [2022-10-17 17:40:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:14,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876274259] [2022-10-17 17:40:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:14,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:40:14,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:40:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:40:14,647 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:40:14,648 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:40:14,650 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:40:14,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:40:14,657 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 17:40:14,661 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:40:14,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:40:14 BoogieIcfgContainer [2022-10-17 17:40:14,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:40:14,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:40:14,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:40:14,728 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:40:14,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:13" (3/4) ... [2022-10-17 17:40:14,733 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 17:40:14,733 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:40:14,734 INFO L158 Benchmark]: Toolchain (without parser) took 3080.99ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 53.1MB in the beginning and 66.6MB in the end (delta: -13.5MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-10-17 17:40:14,735 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:40:14,738 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.14ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 52.9MB in the beginning and 83.8MB in the end (delta: -30.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 17:40:14,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.29ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 81.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:40:14,748 INFO L158 Benchmark]: Boogie Preprocessor took 114.75ms. Allocated memory is still 113.2MB. Free memory was 81.2MB in the beginning and 79.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:40:14,748 INFO L158 Benchmark]: RCFGBuilder took 1511.40ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 56.2MB in the end (delta: 22.3MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2022-10-17 17:40:14,749 INFO L158 Benchmark]: TraceAbstraction took 958.28ms. Allocated memory is still 113.2MB. Free memory was 55.6MB in the beginning and 66.6MB in the end (delta: -11.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:40:14,750 INFO L158 Benchmark]: Witness Printer took 4.77ms. Allocated memory is still 113.2MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:40:14,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.14ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 52.9MB in the beginning and 83.8MB in the end (delta: -30.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.29ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 81.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 114.75ms. Allocated memory is still 113.2MB. Free memory was 81.2MB in the beginning and 79.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1511.40ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 56.2MB in the end (delta: 22.3MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * TraceAbstraction took 958.28ms. Allocated memory is still 113.2MB. Free memory was 55.6MB in the beginning and 66.6MB in the end (delta: -11.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.77ms. Allocated memory is still 113.2MB. Free memory is still 66.6MB. There was no memory consumed. 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: 239]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 238, overapproximation of someUnaryDOUBLEoperation at line 147, overapproximation of someBinaryArithmeticDOUBLEoperation at line 183. Possible FailurePath: [L30] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L142-L155] static const double one_acos = 1.00000000000000000000e+00, pi = 3.14159265358979311600e+00, pio2_hi_acos = 1.57079632679489655800e+00, pio2_lo_acos = 6.12323399573676603587e-17, pS0_acos = 1.66666666666666657415e-01, pS1_acos = -3.25565818622400915405e-01, pS2_acos = 2.01212532134862925881e-01, pS3_acos = -4.00555345006794114027e-02, pS4_acos = 7.91534994289814532176e-04, pS5_acos = 3.47933107596021167570e-05, qS1_acos = -2.40339491173441421878e+00, qS2_acos = 2.02094576023350569471e+00, qS3_acos = -6.88283971605453293030e-01, qS4_acos = 7.70381505559019352791e-02; [L234] double x = 1.0; [L235] CALL, EXPR __ieee754_acos(x) [L158] double z, p, q, r, w, s, c, df; [L159] __int32_t hx, ix; VAL [\old(x)=1, one_acos=1, one_sqrt=1, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L161] ieee_double_shape_type gh_u; [L162] gh_u.value = (x) [L163] EXPR gh_u.parts.msw [L163] (hx) = gh_u.parts.msw [L165] ix = hx & 0x7fffffff VAL [\old(x)=1, hx=2147483647, ix=0, ix = hx & 0x7fffffff=2147483647, one_acos=1, one_sqrt=1, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L166] COND FALSE !(ix >= 0x3ff00000) VAL [\old(x)=1, hx=2147483647, ix=0, ix = hx & 0x7fffffff=2147483647, one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L181] COND TRUE ix < 0x3fe00000 [L182] COND TRUE ix <= 0x3c600000 [L183] return pio2_hi_acos + pio2_lo_acos; VAL [\old(x)=1, hx=2147483647, ix=0, ix = hx & 0x7fffffff=2147483647, one_acos=1, one_sqrt=1, p=6442450952, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, q=6442450956, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, r=6442450955, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1, z=6442450954] [L235] RET, EXPR __ieee754_acos(x) [L235] double res = __ieee754_acos(x); [L238] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [ix = hx & 0x7fffffff=2147483647, one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, res=6442450953, res == 0.0 && __signbit_double(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] [L238] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L239] reach_error() VAL [ix = hx & 0x7fffffff=2147483647, one_acos=1, one_sqrt=1, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, res=6442450953, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 45 mSDtfsCounter, 14 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=46occurred 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, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2022-10-17 17:40:14,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0480.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta --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 f90b1d640a2990a6a85e9cd8b829ad481f01a2281537af5797be61836c0e0f27 --- 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-dbf71c6-m [2022-10-17 17:40:17,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:40:17,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:40:17,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:40:17,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:40:17,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:40:17,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:40:17,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:40:17,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:40:17,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:40:17,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:40:17,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:40:17,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:40:17,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:40:17,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:40:17,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:40:17,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:40:17,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:40:17,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:40:17,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:40:17,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:40:17,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:40:17,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:40:17,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:40:17,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:40:17,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:40:17,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:40:17,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:40:17,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:40:17,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:40:17,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:40:17,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:40:17,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:40:17,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:40:17,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:40:17,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:40:17,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:40:17,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:40:17,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:40:17,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:40:17,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:40:17,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-10-17 17:40:17,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:40:17,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:40:17,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:40:17,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:40:17,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:40:17,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:40:17,758 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:40:17,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:40:17,759 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:40:17,759 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:40:17,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:40:17,761 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:40:17,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:40:17,763 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:40:17,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:40:17,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:40:17,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:40:17,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:40:17,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:40:17,765 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:40:17,765 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:40:17,765 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:40:17,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:40:17,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:40:17,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:40:17,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:40:17,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:40:17,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:40:17,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:40:17,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:17,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:40:17,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:40:17,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:40:17,768 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:40:17,769 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:40:17,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:40:17,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:40:17,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:40:17,770 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_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f90b1d640a2990a6a85e9cd8b829ad481f01a2281537af5797be61836c0e0f27 [2022-10-17 17:40:18,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:40:18,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:40:18,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:40:18,231 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:40:18,232 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:40:18,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-newlib/double_req_bl_0480.c [2022-10-17 17:40:18,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data/9b42f9414/89da209e5f054e49b9783318641ff091/FLAGfcfeb30ad [2022-10-17 17:40:18,979 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:40:18,980 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/sv-benchmarks/c/float-newlib/double_req_bl_0480.c [2022-10-17 17:40:19,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data/9b42f9414/89da209e5f054e49b9783318641ff091/FLAGfcfeb30ad [2022-10-17 17:40:19,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/data/9b42f9414/89da209e5f054e49b9783318641ff091 [2022-10-17 17:40:19,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:40:19,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:40:19,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:19,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:40:19,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:40:19,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:19,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17693cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19, skipping insertion in model container [2022-10-17 17:40:19,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:19,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:40:19,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:40:19,687 WARN L230 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_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/sv-benchmarks/c/float-newlib/double_req_bl_0480.c[5882,5895] [2022-10-17 17:40:19,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:19,717 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:40:19,806 WARN L230 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_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/sv-benchmarks/c/float-newlib/double_req_bl_0480.c[5882,5895] [2022-10-17 17:40:19,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:19,835 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:40:19,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19 WrapperNode [2022-10-17 17:40:19,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:19,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:19,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:40:19,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:40:19,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:19,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:19,918 INFO L138 Inliner]: procedures = 20, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 149 [2022-10-17 17:40:19,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:19,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:40:19,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:40:19,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:40:19,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:19,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:19,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:19,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:19,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:20,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:20,005 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:20,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:20,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:40:20,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:40:20,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:40:20,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:40:20,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (1/1) ... [2022-10-17 17:40:20,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:20,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:40:20,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:40:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:40:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-10-17 17:40:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-10-17 17:40:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:40:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:40:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2022-10-17 17:40:20,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2022-10-17 17:40:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:40:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:40:20,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:40:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 17:40:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:40:20,218 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:40:20,220 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:40:38,554 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:40:38,563 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:40:38,563 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-17 17:40:38,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:38 BoogieIcfgContainer [2022-10-17 17:40:38,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:40:38,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:40:38,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:40:38,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:40:38,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:40:19" (1/3) ... [2022-10-17 17:40:38,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a87b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:38, skipping insertion in model container [2022-10-17 17:40:38,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:19" (2/3) ... [2022-10-17 17:40:38,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a87b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:38, skipping insertion in model container [2022-10-17 17:40:38,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:38" (3/3) ... [2022-10-17 17:40:38,577 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0480.c [2022-10-17 17:40:38,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:40:38,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:40:38,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:40:38,665 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;@45a958e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:40:38,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:40:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 70 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:40:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:40:38,681 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:38,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:38,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:38,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:38,688 INFO L85 PathProgramCache]: Analyzing trace with hash 807618303, now seen corresponding path program 1 times [2022-10-17 17:40:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:40:38,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565408321] [2022-10-17 17:40:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:38,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:40:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:40:38,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:40:38,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:40:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:39,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:40:39,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:39,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:40:39,952 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:40:39,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565408321] [2022-10-17 17:40:39,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565408321] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:39,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:39,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:39,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071730748] [2022-10-17 17:40:39,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:39,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:40:39,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:40:39,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:40:39,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:40:39,993 INFO L87 Difference]: Start difference. First operand has 74 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 70 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-10-17 17:40:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:40,023 INFO L93 Difference]: Finished difference Result 146 states and 236 transitions. [2022-10-17 17:40:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:40:40,025 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 [2022-10-17 17:40:40,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:40,033 INFO L225 Difference]: With dead ends: 146 [2022-10-17 17:40:40,034 INFO L226 Difference]: Without dead ends: 71 [2022-10-17 17:40:40,038 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 [2022-10-17 17:40:40,042 INFO L413 NwaCegarLoop]: 101 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, 101 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 [2022-10-17 17:40:40,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:40:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-17 17:40:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-10-17 17:40:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 67 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:40:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2022-10-17 17:40:40,105 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 11 [2022-10-17 17:40:40,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:40,105 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2022-10-17 17:40:40,106 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) [2022-10-17 17:40:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2022-10-17 17:40:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:40:40,109 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:40,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:40,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:40:40,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:40,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:40,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1074834118, now seen corresponding path program 1 times [2022-10-17 17:40:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:40:40,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997546667] [2022-10-17 17:40:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:40,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:40:40,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:40:40,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:40:40,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:40:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:40,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:40:40,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:41,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:40:41,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:40:41,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997546667] [2022-10-17 17:40:41,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997546667] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:41,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:41,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:40:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852438969] [2022-10-17 17:40:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:41,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:40:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:40:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:40:41,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:40:41,809 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-10-17 17:40:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:41,819 INFO L93 Difference]: Finished difference Result 80 states and 107 transitions. [2022-10-17 17:40:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:40:41,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-10-17 17:40:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:41,821 INFO L225 Difference]: With dead ends: 80 [2022-10-17 17:40:41,821 INFO L226 Difference]: Without dead ends: 19 [2022-10-17 17:40:41,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:40:41,824 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:41,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-10-17 17:40:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-10-17 17:40:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-10-17 17:40:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-10-17 17:40:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-10-17 17:40:41,829 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-10-17 17:40:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:41,830 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-10-17 17:40:41,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-10-17 17:40:41,830 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-10-17 17:40:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:40:41,831 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:41,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:41,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:42,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:40:42,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:42,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1734297343, now seen corresponding path program 1 times [2022-10-17 17:40:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:40:42,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513668802] [2022-10-17 17:40:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:42,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:40:42,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:40:42,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:40:42,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:40:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:43,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 17:40:43,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:43,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-10-17 17:40:45,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-10-17 17:40:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:46,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:40:46,518 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:40:46,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513668802] [2022-10-17 17:40:46,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513668802] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:46,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:46,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:40:46,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910393134] [2022-10-17 17:40:46,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:46,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:40:46,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:40:46,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:40:46,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:40:46,522 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-10-17 17:40:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:46,529 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-10-17 17:40:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:40:46,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2022-10-17 17:40:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:46,531 INFO L225 Difference]: With dead ends: 28 [2022-10-17 17:40:46,531 INFO L226 Difference]: Without dead ends: 19 [2022-10-17 17:40:46,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:40:46,533 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:46,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2022-10-17 17:40:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-10-17 17:40:46,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-10-17 17:40:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 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) [2022-10-17 17:40:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-10-17 17:40:46,539 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2022-10-17 17:40:46,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:46,539 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-10-17 17:40:46,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-10-17 17:40:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-10-17 17:40:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:40:46,541 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:46,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:46,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:46,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:40:46,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:46,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1833412902, now seen corresponding path program 1 times [2022-10-17 17:40:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:40:46,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828784569] [2022-10-17 17:40:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:46,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:40:46,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:40:46,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:40:46,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 17:40:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:46,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 17:40:46,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:47,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:40:47,336 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:40:47,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828784569] [2022-10-17 17:40:47,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828784569] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:47,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:47,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:40:47,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055062743] [2022-10-17 17:40:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:47,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:40:47,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:40:47,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:40:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:40:47,340 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-10-17 17:40:48,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 17:40:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:48,994 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-10-17 17:40:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:40:48,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Word has length 14 [2022-10-17 17:40:48,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:48,996 INFO L225 Difference]: With dead ends: 31 [2022-10-17 17:40:48,996 INFO L226 Difference]: Without dead ends: 28 [2022-10-17 17:40:48,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:40:48,997 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:48,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 48 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 17:40:48,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-17 17:40:49,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2022-10-17 17:40:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2022-10-17 17:40:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-10-17 17:40:49,003 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2022-10-17 17:40:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:49,003 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-10-17 17:40:49,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-10-17 17:40:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-10-17 17:40:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:40:49,014 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:49,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:49,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:49,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:40:49,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:40:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1835259944, now seen corresponding path program 1 times [2022-10-17 17:40:49,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:40:49,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260611400] [2022-10-17 17:40:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:49,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:40:49,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:40:49,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:40:49,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2d4ecd-39e1-4149-bc50-a6e03f7e5a8c/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 17:40:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:49,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 17:40:49,543 INFO L286 TraceCheckSpWp]: Computing forward predicates...