./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS --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 72e6a731e5f93184d8452e046ba5fa07483889ea5d4b2985d4608011d07f1d55 --- 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-8393723 [2022-11-19 07:34:58,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:34:58,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:34:58,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:34:58,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:34:58,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:34:58,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:34:58,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:34:58,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:34:58,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:34:58,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:34:58,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:34:58,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:34:58,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:34:58,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:34:58,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:34:58,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:34:58,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:34:58,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:34:58,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:34:58,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:34:58,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:34:58,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:34:58,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:34:58,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:34:58,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:34:58,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:34:58,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:34:58,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:34:58,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:34:58,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:34:58,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:34:58,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:34:58,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:34:58,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:34:58,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:34:58,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:34:58,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:34:58,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:34:58,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:34:58,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:34:58,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:34:58,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:34:58,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:34:58,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:34:58,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:34:58,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:34:58,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:34:58,425 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:34:58,426 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:34:58,426 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:34:58,426 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:34:58,427 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:34:58,428 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:34:58,428 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:34:58,428 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:34:58,428 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:34:58,429 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:34:58,429 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:34:58,429 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:34:58,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:34:58,430 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:34:58,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:34:58,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:34:58,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:34:58,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:34:58,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:34:58,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:34:58,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:34:58,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:34:58,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:34:58,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:34:58,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:34:58,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:34:58,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:34:58,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:34:58,435 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:34:58,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:34:58,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:34:58,436 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:34:58,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:34:58,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:34:58,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:34:58,436 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_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72e6a731e5f93184d8452e046ba5fa07483889ea5d4b2985d4608011d07f1d55 [2022-11-19 07:34:58,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:34:58,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:34:58,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:34:58,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:34:58,869 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:34:58,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2022-11-19 07:34:58,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data/326a4d056/2def6cc84aac4ded850b87bd83c7e46e/FLAGbe8e71845 [2022-11-19 07:34:59,436 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:34:59,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2022-11-19 07:34:59,464 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data/326a4d056/2def6cc84aac4ded850b87bd83c7e46e/FLAGbe8e71845 [2022-11-19 07:34:59,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data/326a4d056/2def6cc84aac4ded850b87bd83c7e46e [2022-11-19 07:34:59,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:34:59,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:34:59,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:34:59,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:34:59,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:34:59,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:59" (1/1) ... [2022-11-19 07:34:59,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52112ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:59, skipping insertion in model container [2022-11-19 07:34:59,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:59" (1/1) ... [2022-11-19 07:34:59,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:34:59,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:35:00,131 WARN L234 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_ae72ae86-125e-417c-932f-748f0b003c31/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c[2154,2167] [2022-11-19 07:35:00,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:00,145 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:35:00,174 WARN L234 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_ae72ae86-125e-417c-932f-748f0b003c31/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c[2154,2167] [2022-11-19 07:35:00,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:00,191 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:35:00,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00 WrapperNode [2022-11-19 07:35:00,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:00,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:00,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:35:00,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:35:00,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,232 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2022-11-19 07:35:00,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:00,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:35:00,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:35:00,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:35:00,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:35:00,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:35:00,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:35:00,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:35:00,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (1/1) ... [2022-11-19 07:35:00,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:00,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:35:00,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:35:00,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:35:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:35:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:35:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:35:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-11-19 07:35:00,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-11-19 07:35:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-19 07:35:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:35:00,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:35:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:35:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:35:00,492 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:35:00,494 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:35:00,794 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:35:00,978 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:35:00,979 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:35:00,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:00 BoogieIcfgContainer [2022-11-19 07:35:00,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:35:00,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:35:00,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:35:00,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:35:00,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:59" (1/3) ... [2022-11-19 07:35:00,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd019b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:00, skipping insertion in model container [2022-11-19 07:35:00,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:00" (2/3) ... [2022-11-19 07:35:00,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd019b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:00, skipping insertion in model container [2022-11-19 07:35:00,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:00" (3/3) ... [2022-11-19 07:35:00,993 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2022-11-19 07:35:01,016 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:35:01,016 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:35:01,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:35:01,114 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;@5c52a29f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:35:01,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:35:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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) [2022-11-19 07:35:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:35:01,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:01,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:01,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:01,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1347823728, now seen corresponding path program 1 times [2022-11-19 07:35:01,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:01,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341921434] [2022-11-19 07:35:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:01,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:35:01,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:35:01,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341921434] [2022-11-19 07:35:01,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341921434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:01,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:01,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:35:01,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380514594] [2022-11-19 07:35:01,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:01,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:35:01,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:35:01,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:35:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:35:01,387 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:01,434 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2022-11-19 07:35:01,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:35:01,437 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-19 07:35:01,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:01,445 INFO L225 Difference]: With dead ends: 40 [2022-11-19 07:35:01,446 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 07:35:01,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:35:01,453 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:01,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:35:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 07:35:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-19 07:35:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-11-19 07:35:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-19 07:35:01,497 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-11-19 07:35:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:01,498 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-19 07:35:01,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:01,498 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-19 07:35:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:35:01,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:01,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:35:01,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:01,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash -610634575, now seen corresponding path program 1 times [2022-11-19 07:35:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:01,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863757492] [2022-11-19 07:35:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:35:01,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:35:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:35:01,649 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:35:01,649 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:35:01,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:35:01,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:35:01,658 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:35:01,662 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:35:01,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:35:01 BoogieIcfgContainer [2022-11-19 07:35:01,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:35:01,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:35:01,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:35:01,689 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:35:01,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:00" (3/4) ... [2022-11-19 07:35:01,694 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:35:01,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:35:01,695 INFO L158 Benchmark]: Toolchain (without parser) took 1873.88ms. Allocated memory is still 119.5MB. Free memory was 74.9MB in the beginning and 40.9MB in the end (delta: 34.0MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2022-11-19 07:35:01,695 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:35:01,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.31ms. Allocated memory is still 119.5MB. Free memory was 74.7MB in the beginning and 92.7MB in the end (delta: -18.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2022-11-19 07:35:01,697 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.39ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 91.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:35:01,697 INFO L158 Benchmark]: Boogie Preprocessor took 28.39ms. Allocated memory is still 119.5MB. Free memory was 91.2MB in the beginning and 89.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:35:01,698 INFO L158 Benchmark]: RCFGBuilder took 720.13ms. Allocated memory is still 119.5MB. Free memory was 89.7MB in the beginning and 70.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-19 07:35:01,699 INFO L158 Benchmark]: TraceAbstraction took 704.21ms. Allocated memory is still 119.5MB. Free memory was 70.3MB in the beginning and 41.4MB in the end (delta: 28.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-19 07:35:01,718 INFO L158 Benchmark]: Witness Printer took 5.16ms. Allocated memory is still 119.5MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:35:01,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.31ms. Allocated memory is still 119.5MB. Free memory was 74.7MB in the beginning and 92.7MB in the end (delta: -18.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.39ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 91.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.39ms. Allocated memory is still 119.5MB. Free memory was 91.2MB in the beginning and 89.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 720.13ms. Allocated memory is still 119.5MB. Free memory was 89.7MB in the beginning and 70.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 704.21ms. Allocated memory is still 119.5MB. Free memory was 70.3MB in the beginning and 41.4MB in the end (delta: 28.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 5.16ms. Allocated memory is still 119.5MB. Free memory is still 40.9MB. 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: 87]: 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 86, overapproximation of someUnaryDOUBLEoperation at line 82. Possible FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L83] CALL, EXPR fmax_double(x, y) [L54] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L26] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4293918722, __fpclassify_double(x)=0, x=0, y=4293918722] [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; VAL [\old(x)=0, \old(y)=4293918722, \result=4293918722, x=0, y=4293918722] [L83] RET, EXPR fmax_double(x, y) [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4293918722, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4293918722] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() VAL [res=4293918722, x=0, y=4293918722] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 5 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=21occurred 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:35:01,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS --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 72e6a731e5f93184d8452e046ba5fa07483889ea5d4b2985d4608011d07f1d55 --- 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-8393723 [2022-11-19 07:35:04,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:35:04,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:35:04,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:35:04,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:35:04,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:35:04,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:35:04,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:35:04,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:35:04,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:35:04,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:35:04,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:35:04,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:35:04,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:35:04,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:35:04,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:35:04,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:35:04,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:35:04,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:35:04,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:35:04,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:35:04,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:35:04,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:35:04,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:35:04,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:35:04,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:35:04,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:35:04,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:35:04,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:35:04,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:35:04,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:35:04,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:35:04,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:35:04,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:35:04,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:35:04,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:35:04,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:35:04,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:35:04,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:35:04,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:35:04,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:35:04,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:35:04,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:35:04,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:35:04,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:35:04,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:35:04,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:35:04,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:35:04,293 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:35:04,293 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:35:04,293 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:35:04,293 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:35:04,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:35:04,294 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:35:04,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:35:04,295 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:35:04,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:35:04,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:35:04,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:35:04,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:35:04,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:35:04,297 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:35:04,297 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:35:04,297 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:35:04,297 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:35:04,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:35:04,298 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:35:04,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:35:04,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:35:04,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:35:04,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:35:04,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:04,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:35:04,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:35:04,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:35:04,300 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:35:04,300 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:35:04,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:35:04,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:35:04,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:35:04,301 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_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72e6a731e5f93184d8452e046ba5fa07483889ea5d4b2985d4608011d07f1d55 [2022-11-19 07:35:04,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:35:04,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:35:04,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:35:04,754 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:35:04,755 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:35:04,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2022-11-19 07:35:04,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data/b37167536/cfa85ffdeef1497d9f037ead17b6c057/FLAG407a2dd50 [2022-11-19 07:35:05,360 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:35:05,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2022-11-19 07:35:05,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data/b37167536/cfa85ffdeef1497d9f037ead17b6c057/FLAG407a2dd50 [2022-11-19 07:35:05,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/data/b37167536/cfa85ffdeef1497d9f037ead17b6c057 [2022-11-19 07:35:05,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:35:05,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:35:05,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:05,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:35:05,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:35:05,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:05" (1/1) ... [2022-11-19 07:35:05,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8f89d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:05, skipping insertion in model container [2022-11-19 07:35:05,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:05" (1/1) ... [2022-11-19 07:35:05,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:35:05,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:35:06,025 WARN L234 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_ae72ae86-125e-417c-932f-748f0b003c31/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c[2154,2167] [2022-11-19 07:35:06,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:06,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:35:06,147 WARN L234 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_ae72ae86-125e-417c-932f-748f0b003c31/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c[2154,2167] [2022-11-19 07:35:06,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:06,172 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:35:06,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06 WrapperNode [2022-11-19 07:35:06,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:06,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:06,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:35:06,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:35:06,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,233 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-11-19 07:35:06,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:06,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:35:06,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:35:06,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:35:06,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:35:06,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:35:06,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:35:06,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:35:06,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (1/1) ... [2022-11-19 07:35:06,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:06,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:35:06,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:35:06,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:35:06,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:35:06,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-19 07:35:06,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:35:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:35:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-11-19 07:35:06,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-11-19 07:35:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:35:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:35:06,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:35:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:35:06,452 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:35:06,455 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:35:06,775 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:35:06,782 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:35:06,783 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:35:06,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:06 BoogieIcfgContainer [2022-11-19 07:35:06,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:35:06,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:35:06,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:35:06,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:35:06,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:05" (1/3) ... [2022-11-19 07:35:06,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669c07fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:06, skipping insertion in model container [2022-11-19 07:35:06,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:06" (2/3) ... [2022-11-19 07:35:06,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669c07fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:06, skipping insertion in model container [2022-11-19 07:35:06,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:06" (3/3) ... [2022-11-19 07:35:06,798 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2022-11-19 07:35:06,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:35:06,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:35:06,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:35:06,883 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;@1b3e8dfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:35:06,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:35:06,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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) [2022-11-19 07:35:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:35:06,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:06,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:06,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:06,906 INFO L85 PathProgramCache]: Analyzing trace with hash 624090286, now seen corresponding path program 1 times [2022-11-19 07:35:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:06,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159969758] [2022-11-19 07:35:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:06,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:06,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:06,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:06,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:35:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:07,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:35:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:35:07,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:07,102 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:07,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159969758] [2022-11-19 07:35:07,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159969758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:07,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:07,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:35:07,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279403321] [2022-11-19 07:35:07,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:07,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:35:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:07,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:35:07,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:35:07,172 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:07,211 INFO L93 Difference]: Finished difference Result 51 states and 76 transitions. [2022-11-19 07:35:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:35:07,215 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-19 07:35:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:07,224 INFO L225 Difference]: With dead ends: 51 [2022-11-19 07:35:07,225 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 07:35:07,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:35:07,235 INFO L413 NwaCegarLoop]: 34 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, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:07,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:35:07,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 07:35:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-19 07:35:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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) [2022-11-19 07:35:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-19 07:35:07,295 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2022-11-19 07:35:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:07,297 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-19 07:35:07,297 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:07,298 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-19 07:35:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:35:07,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:07,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:07,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-19 07:35:07,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:07,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:07,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:07,517 INFO L85 PathProgramCache]: Analyzing trace with hash 181002929, now seen corresponding path program 1 times [2022-11-19 07:35:07,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:07,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084440058] [2022-11-19 07:35:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:07,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:07,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:07,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:07,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:35:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:07,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:35:07,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:35:07,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:07,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:07,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084440058] [2022-11-19 07:35:07,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084440058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:07,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:07,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:35:07,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750302197] [2022-11-19 07:35:07,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:07,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:35:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:35:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:07,769 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:07,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:07,949 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-19 07:35:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:35:07,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-19 07:35:07,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:07,953 INFO L225 Difference]: With dead ends: 36 [2022-11-19 07:35:07,953 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 07:35:07,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:07,955 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:07,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:35:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 07:35:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-19 07:35:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 07:35:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-19 07:35:07,966 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2022-11-19 07:35:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:07,966 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-19 07:35:07,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-19 07:35:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:35:07,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:07,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:07,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:08,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:08,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash -943857557, now seen corresponding path program 1 times [2022-11-19 07:35:08,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:08,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059094052] [2022-11-19 07:35:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:08,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:08,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:08,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:08,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:35:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:08,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:35:08,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:35:08,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:08,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:08,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059094052] [2022-11-19 07:35:08,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059094052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:08,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:08,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:35:08,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879149502] [2022-11-19 07:35:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:08,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:35:08,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:08,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:35:08,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:35:08,784 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:08,852 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2022-11-19 07:35:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:35:08,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-19 07:35:08,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:08,854 INFO L225 Difference]: With dead ends: 52 [2022-11-19 07:35:08,854 INFO L226 Difference]: Without dead ends: 29 [2022-11-19 07:35:08,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:35:08,856 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:08,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 94 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-19 07:35:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-19 07:35:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-19 07:35:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:35:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-11-19 07:35:08,865 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-11-19 07:35:08,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:08,865 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-11-19 07:35:08,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-11-19 07:35:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:35:08,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:08,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:08,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:09,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:09,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1221479789, now seen corresponding path program 1 times [2022-11-19 07:35:09,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:09,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158717701] [2022-11-19 07:35:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:09,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:09,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:09,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:09,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:35:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:09,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:35:09,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:35:09,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:09,240 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:09,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158717701] [2022-11-19 07:35:09,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158717701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:09,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:09,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:35:09,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432720428] [2022-11-19 07:35:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:09,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:35:09,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:09,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:35:09,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:09,244 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:09,527 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-11-19 07:35:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:35:09,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-19 07:35:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:09,529 INFO L225 Difference]: With dead ends: 41 [2022-11-19 07:35:09,529 INFO L226 Difference]: Without dead ends: 32 [2022-11-19 07:35:09,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:09,531 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:09,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:35:09,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-19 07:35:09,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2022-11-19 07:35:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:35:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-11-19 07:35:09,540 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2022-11-19 07:35:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:09,541 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-11-19 07:35:09,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-11-19 07:35:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:35:09,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:09,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:09,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-19 07:35:09,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:09,760 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1991232473, now seen corresponding path program 1 times [2022-11-19 07:35:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:09,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839132119] [2022-11-19 07:35:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:09,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:09,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:09,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:09,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:35:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:09,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:35:09,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:35:10,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:10,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:10,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839132119] [2022-11-19 07:35:10,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839132119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:10,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:10,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:35:10,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58735903] [2022-11-19 07:35:10,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:10,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:35:10,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:10,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:35:10,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:35:10,107 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:10,189 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2022-11-19 07:35:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:35:10,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-19 07:35:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:10,194 INFO L225 Difference]: With dead ends: 53 [2022-11-19 07:35:10,194 INFO L226 Difference]: Without dead ends: 28 [2022-11-19 07:35:10,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:35:10,195 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:10,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2022-11-19 07:35:10,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-19 07:35:10,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-11-19 07:35:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:35:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-19 07:35:10,201 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 17 [2022-11-19 07:35:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:10,202 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-19 07:35:10,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:35:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-19 07:35:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 07:35:10,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:10,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:10,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-19 07:35:10,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:10,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:10,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:10,411 INFO L85 PathProgramCache]: Analyzing trace with hash -941704498, now seen corresponding path program 1 times [2022-11-19 07:35:10,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:10,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051450479] [2022-11-19 07:35:10,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:10,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:10,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:10,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:10,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 07:35:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:10,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:35:10,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:35:10,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:10,562 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:10,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051450479] [2022-11-19 07:35:10,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051450479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:10,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:10,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:35:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252917071] [2022-11-19 07:35:10,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:10,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:35:10,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:10,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:35:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:10,565 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:10,908 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-19 07:35:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:35:10,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-19 07:35:10,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:10,909 INFO L225 Difference]: With dead ends: 38 [2022-11-19 07:35:10,909 INFO L226 Difference]: Without dead ends: 29 [2022-11-19 07:35:10,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:10,911 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:10,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:35:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-19 07:35:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-19 07:35:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:35:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-11-19 07:35:10,919 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 22 [2022-11-19 07:35:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:10,919 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-11-19 07:35:10,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-11-19 07:35:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 07:35:10,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:10,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:10,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:11,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:11,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:11,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash -939857456, now seen corresponding path program 1 times [2022-11-19 07:35:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:11,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324541338] [2022-11-19 07:35:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:11,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:11,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:11,125 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:11,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:35:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:11,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:35:11,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:35:11,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:11,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:11,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324541338] [2022-11-19 07:35:11,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324541338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:11,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:11,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:35:11,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305954145] [2022-11-19 07:35:11,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:11,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:35:11,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:11,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:35:11,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:35:11,386 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:11,505 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-19 07:35:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:35:11,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-19 07:35:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:11,507 INFO L225 Difference]: With dead ends: 41 [2022-11-19 07:35:11,507 INFO L226 Difference]: Without dead ends: 38 [2022-11-19 07:35:11,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:35:11,509 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:11,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 80 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:35:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-19 07:35:11,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2022-11-19 07:35:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:35:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-11-19 07:35:11,526 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 22 [2022-11-19 07:35:11,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:11,527 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-19 07:35:11,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-11-19 07:35:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:35:11,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:11,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:11,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:11,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:11,758 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:11,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1022935030, now seen corresponding path program 1 times [2022-11-19 07:35:11,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:11,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980432492] [2022-11-19 07:35:11,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:11,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:11,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:11,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:11,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:35:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:11,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:35:11,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:35:12,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:12,088 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:12,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980432492] [2022-11-19 07:35:12,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980432492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:12,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:12,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:35:12,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514365481] [2022-11-19 07:35:12,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:12,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:35:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:35:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:35:12,091 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:12,169 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2022-11-19 07:35:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:35:12,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-19 07:35:12,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:12,174 INFO L225 Difference]: With dead ends: 45 [2022-11-19 07:35:12,174 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 07:35:12,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:35:12,175 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:12,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 94 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-11-19 07:35:12,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 07:35:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 07:35:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:35:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-11-19 07:35:12,179 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 23 [2022-11-19 07:35:12,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:12,179 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-19 07:35:12,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-11-19 07:35:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:35:12,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:12,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:12,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:12,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:12,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:12,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:12,388 INFO L85 PathProgramCache]: Analyzing trace with hash 178525002, now seen corresponding path program 1 times [2022-11-19 07:35:12,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:12,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262958036] [2022-11-19 07:35:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:12,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:12,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:12,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:12,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 07:35:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:12,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:35:12,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:35:12,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:12,533 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:12,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262958036] [2022-11-19 07:35:12,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262958036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:12,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:12,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:35:12,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127210280] [2022-11-19 07:35:12,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:12,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:35:12,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:12,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:35:12,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:12,536 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:12,705 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-11-19 07:35:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:35:12,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-19 07:35:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:12,707 INFO L225 Difference]: With dead ends: 41 [2022-11-19 07:35:12,707 INFO L226 Difference]: Without dead ends: 32 [2022-11-19 07:35:12,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:12,708 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:12,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:35:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-19 07:35:12,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2022-11-19 07:35:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:35:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-19 07:35:12,714 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 24 [2022-11-19 07:35:12,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:12,714 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-19 07:35:12,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-19 07:35:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:35:12,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:12,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:12,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-19 07:35:12,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:12,929 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:12,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1847075342, now seen corresponding path program 1 times [2022-11-19 07:35:12,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:12,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783425196] [2022-11-19 07:35:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:12,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:12,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:12,931 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:12,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:35:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:13,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:35:13,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:35:13,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:13,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:13,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783425196] [2022-11-19 07:35:13,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783425196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:13,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:13,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:35:13,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119104660] [2022-11-19 07:35:13,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:13,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:35:13,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:13,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:35:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:35:13,237 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:13,334 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-19 07:35:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:35:13,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-19 07:35:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:13,336 INFO L225 Difference]: With dead ends: 38 [2022-11-19 07:35:13,336 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 07:35:13,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:35:13,337 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:13,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 76 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2022-11-19 07:35:13,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 07:35:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-19 07:35:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-11-19 07:35:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-19 07:35:13,342 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 25 [2022-11-19 07:35:13,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:13,342 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-19 07:35:13,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:35:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-19 07:35:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 07:35:13,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:13,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:13,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:13,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:13,555 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2027753189, now seen corresponding path program 1 times [2022-11-19 07:35:13,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:13,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033903457] [2022-11-19 07:35:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:13,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:13,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:13,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:35:13,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:35:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:35:13,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:35:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:35:13,868 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-19 07:35:13,869 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:35:13,870 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:35:13,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:14,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:35:14,076 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:14,080 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:35:14,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:35:14 BoogieIcfgContainer [2022-11-19 07:35:14,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:35:14,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:35:14,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:35:14,130 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:35:14,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:06" (3/4) ... [2022-11-19 07:35:14,133 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:35:14,189 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:35:14,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:35:14,196 INFO L158 Benchmark]: Toolchain (without parser) took 8466.56ms. Allocated memory was 75.5MB in the beginning and 102.8MB in the end (delta: 27.3MB). Free memory was 60.2MB in the beginning and 37.9MB in the end (delta: 22.3MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2022-11-19 07:35:14,196 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 75.5MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:35:14,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.98ms. Allocated memory is still 75.5MB. Free memory was 59.9MB in the beginning and 57.8MB in the end (delta: 2.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:35:14,197 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.41ms. Allocated memory is still 75.5MB. Free memory was 57.8MB in the beginning and 56.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:35:14,198 INFO L158 Benchmark]: Boogie Preprocessor took 43.22ms. Allocated memory is still 75.5MB. Free memory was 56.0MB in the beginning and 54.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:35:14,198 INFO L158 Benchmark]: RCFGBuilder took 507.65ms. Allocated memory is still 75.5MB. Free memory was 54.5MB in the beginning and 40.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:35:14,199 INFO L158 Benchmark]: TraceAbstraction took 7340.65ms. Allocated memory was 75.5MB in the beginning and 102.8MB in the end (delta: 27.3MB). Free memory was 40.1MB in the beginning and 40.9MB in the end (delta: -721.3kB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2022-11-19 07:35:14,200 INFO L158 Benchmark]: Witness Printer took 65.11ms. Allocated memory is still 102.8MB. Free memory was 40.9MB in the beginning and 37.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:35:14,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 75.5MB. Free memory is still 57.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 440.98ms. Allocated memory is still 75.5MB. Free memory was 59.9MB in the beginning and 57.8MB in the end (delta: 2.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.41ms. Allocated memory is still 75.5MB. Free memory was 57.8MB in the beginning and 56.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.22ms. Allocated memory is still 75.5MB. Free memory was 56.0MB in the beginning and 54.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 507.65ms. Allocated memory is still 75.5MB. Free memory was 54.5MB in the beginning and 40.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7340.65ms. Allocated memory was 75.5MB in the beginning and 102.8MB in the end (delta: 27.3MB). Free memory was 40.1MB in the beginning and 40.9MB in the end (delta: -721.3kB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * Witness Printer took 65.11ms. Allocated memory is still 102.8MB. Free memory was 40.9MB in the beginning and 37.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 87]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L83] CALL, EXPR fmax_double(x, y) [L54] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L26] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L54] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L54] COND FALSE !(__fpclassify_double(x) == 0) [L56] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L26] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L56] RET, EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L56] COND FALSE !(__fpclassify_double(y) == 0) [L59] return x > y ? x : y; VAL [\old(x)=0.0, \old(y)=0.0, \result=0.0, x=0.0, y=0.0] [L83] RET, EXPR fmax_double(x, y) [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] CALL, EXPR __signbit_double(res) [L63] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L66] ieee_double_shape_type gh_u; [L67] gh_u.value = (x) [L68] EXPR gh_u.parts.msw [L68] (msw) = gh_u.parts.msw [L71] return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, msw=2147483648, x=0.0] [L86] RET, EXPR __signbit_double(res) [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [__signbit_double(res)=1, res=0.0, res == 0.0 && __signbit_double(res) == 0=0, x=0.0, y=0.0] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 89 mSDsluCounter, 792 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 76 IncrementalHoareTripleChecker+Unchecked, 514 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 278 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 188 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=7, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 181 ConstructedInterpolants, 24 QuantifiedInterpolants, 755 SizeOfPredicates, 32 NumberOfNonLiveVariables, 700 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 30/30 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 proved your program to be incorrect! [2022-11-19 07:35:14,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae72ae86-125e-417c-932f-748f0b003c31/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE