./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.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_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/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_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/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_a0c86618-9557-4d58-bba3-1ed6f8b35caa/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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- 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 06:47:06,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:47:06,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:47:06,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:47:06,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:47:06,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:47:06,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:47:06,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:47:06,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:47:06,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:47:06,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:47:06,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:47:06,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:47:06,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:47:06,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:47:06,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:47:06,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:47:06,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:47:06,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:47:06,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:47:06,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:47:06,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:47:06,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:47:06,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:47:06,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:47:06,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:47:06,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:47:06,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:47:06,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:47:06,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:47:06,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:47:06,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:47:06,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:47:06,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:47:06,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:47:06,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:47:06,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:47:06,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:47:06,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:47:06,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:47:06,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:47:06,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:47:06,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:47:06,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:47:06,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:47:06,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:47:06,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:47:06,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:47:06,379 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:47:06,379 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:47:06,380 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:47:06,380 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:47:06,381 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:47:06,382 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:47:06,382 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:47:06,382 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:47:06,382 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:47:06,383 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:47:06,383 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:47:06,383 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:47:06,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:47:06,384 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:47:06,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:47:06,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:47:06,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:47:06,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:47:06,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:47:06,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:47:06,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:47:06,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:47:06,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:47:06,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:47:06,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:47:06,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:47:06,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:47:06,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:47:06,390 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:47:06,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:47:06,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:47:06,391 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:47:06,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:47:06,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:47:06,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:47:06,392 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_a0c86618-9557-4d58-bba3-1ed6f8b35caa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2022-11-19 06:47:06,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:47:06,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:47:06,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:47:06,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:47:06,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:47:06,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-19 06:47:06,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/data/930c43e87/0589644267b248628a4d898da467ce84/FLAGb38827e77 [2022-11-19 06:47:07,440 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:47:07,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-19 06:47:07,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/data/930c43e87/0589644267b248628a4d898da467ce84/FLAGb38827e77 [2022-11-19 06:47:07,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/data/930c43e87/0589644267b248628a4d898da467ce84 [2022-11-19 06:47:07,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:47:07,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:47:07,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:47:07,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:47:07,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:47:07,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:47:07" (1/1) ... [2022-11-19 06:47:07,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74735799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:07, skipping insertion in model container [2022-11-19 06:47:07,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:47:07" (1/1) ... [2022-11-19 06:47:07,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:47:07,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:47:08,133 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_a0c86618-9557-4d58-bba3-1ed6f8b35caa/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-19 06:47:08,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:47:08,216 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:47:08,228 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_a0c86618-9557-4d58-bba3-1ed6f8b35caa/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-19 06:47:08,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:47:08,278 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:47:08,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08 WrapperNode [2022-11-19 06:47:08,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:47:08,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:47:08,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:47:08,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:47:08,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,334 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 154 [2022-11-19 06:47:08,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:47:08,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:47:08,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:47:08,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:47:08,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:47:08,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:47:08,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:47:08,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:47:08,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (1/1) ... [2022-11-19 06:47:08,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:47:08,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:08,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:47:08,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:47:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:47:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:47:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-19 06:47:08,475 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-19 06:47:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:47:08,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:47:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:47:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:47:08,597 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:47:08,599 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:47:09,131 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:47:09,450 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:47:09,451 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:47:09,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:47:09 BoogieIcfgContainer [2022-11-19 06:47:09,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:47:09,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:47:09,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:47:09,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:47:09,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:47:07" (1/3) ... [2022-11-19 06:47:09,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfaf3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:47:09, skipping insertion in model container [2022-11-19 06:47:09,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:47:08" (2/3) ... [2022-11-19 06:47:09,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfaf3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:47:09, skipping insertion in model container [2022-11-19 06:47:09,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:47:09" (3/3) ... [2022-11-19 06:47:09,466 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2022-11-19 06:47:09,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:47:09,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:47:09,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:47:09,620 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;@4015a90b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:47:09,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:47:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 32 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 06:47:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 06:47:09,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:09,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:47:09,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:47:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:09,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1739629347, now seen corresponding path program 1 times [2022-11-19 06:47:09,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:09,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530286377] [2022-11-19 06:47:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:09,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:47:10,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:47:10,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530286377] [2022-11-19 06:47:10,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530286377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:47:10,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101502218] [2022-11-19 06:47:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:10,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:10,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:10,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:47:10,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:47:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:10,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-19 06:47:10,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:47:10,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:47:11,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101502218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:11,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911758154] [2022-11-19 06:47:11,351 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-19 06:47:11,352 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:47:11,357 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:47:11,363 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:47:11,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:47:11,608 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-11-19 06:47:11,685 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:47:13,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [911758154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:47:13,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:47:13,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 12, 11] total 29 [2022-11-19 06:47:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480820961] [2022-11-19 06:47:13,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:47:13,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 06:47:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:47:13,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 06:47:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-11-19 06:47:13,105 INFO L87 Difference]: Start difference. First operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 32 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 9 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-19 06:47:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:13,479 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2022-11-19 06:47:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 06:47:13,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-11-19 06:47:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:13,493 INFO L225 Difference]: With dead ends: 108 [2022-11-19 06:47:13,493 INFO L226 Difference]: Without dead ends: 65 [2022-11-19 06:47:13,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-11-19 06:47:13,502 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 62 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:13,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 202 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:47:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-19 06:47:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2022-11-19 06:47:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-19 06:47:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2022-11-19 06:47:13,567 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2022-11-19 06:47:13,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:13,568 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2022-11-19 06:47:13,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-19 06:47:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2022-11-19 06:47:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 06:47:13,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:13,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:47:13,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:47:13,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 06:47:13,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:47:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash -67408673, now seen corresponding path program 1 times [2022-11-19 06:47:13,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:13,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853542677] [2022-11-19 06:47:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:13,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:47:14,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:47:14,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853542677] [2022-11-19 06:47:14,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853542677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:47:14,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309263958] [2022-11-19 06:47:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:14,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:14,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:14,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:47:14,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:47:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:14,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-19 06:47:14,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:47:14,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:47:14,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309263958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:14,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35222049] [2022-11-19 06:47:14,742 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 06:47:14,742 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:47:14,743 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:47:14,743 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:47:14,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:47:15,400 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-19 06:47:15,415 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-19 06:47:15,552 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:47:18,201 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '707#(and (= (select |#length| 3) 12) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:47:18,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:47:18,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:47:18,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 11] total 23 [2022-11-19 06:47:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795386378] [2022-11-19 06:47:18,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:47:18,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 06:47:18,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:47:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 06:47:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 06:47:18,206 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 23 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-19 06:47:19,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:19,519 INFO L93 Difference]: Finished difference Result 164 states and 256 transitions. [2022-11-19 06:47:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-19 06:47:19,520 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 37 [2022-11-19 06:47:19,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:19,524 INFO L225 Difference]: With dead ends: 164 [2022-11-19 06:47:19,527 INFO L226 Difference]: Without dead ends: 124 [2022-11-19 06:47:19,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=329, Invalid=2863, Unknown=0, NotChecked=0, Total=3192 [2022-11-19 06:47:19,532 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 179 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:19,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 428 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:47:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-19 06:47:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 70. [2022-11-19 06:47:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 states have internal predecessors, (76), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-19 06:47:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2022-11-19 06:47:19,606 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 37 [2022-11-19 06:47:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:19,608 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2022-11-19 06:47:19,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-19 06:47:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2022-11-19 06:47:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-19 06:47:19,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:19,617 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:47:19,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:47:19,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:19,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:47:19,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash 999995298, now seen corresponding path program 1 times [2022-11-19 06:47:19,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:19,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503058100] [2022-11-19 06:47:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:19,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:47:20,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:47:20,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503058100] [2022-11-19 06:47:20,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503058100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:47:20,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973241486] [2022-11-19 06:47:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:20,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:20,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:20,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:47:20,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:47:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:20,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:47:20,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 06:47:20,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:47:20,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973241486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:20,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376175595] [2022-11-19 06:47:20,365 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 06:47:20,365 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:47:20,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:47:20,366 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:47:20,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:47:20,995 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-19 06:47:21,084 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:47:22,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1376175595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:47:22,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:47:22,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 5, 5] total 27 [2022-11-19 06:47:22,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966616243] [2022-11-19 06:47:22,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:47:22,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 06:47:22,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:47:22,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 06:47:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-11-19 06:47:22,409 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 06:47:23,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:23,815 INFO L93 Difference]: Finished difference Result 139 states and 206 transitions. [2022-11-19 06:47:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 06:47:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2022-11-19 06:47:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:23,820 INFO L225 Difference]: With dead ends: 139 [2022-11-19 06:47:23,820 INFO L226 Difference]: Without dead ends: 124 [2022-11-19 06:47:23,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2022-11-19 06:47:23,822 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 110 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:23,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 269 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:47:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-19 06:47:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 78. [2022-11-19 06:47:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 63 states have internal predecessors, (80), 10 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-19 06:47:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 107 transitions. [2022-11-19 06:47:23,875 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 107 transitions. Word has length 39 [2022-11-19 06:47:23,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:23,876 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 107 transitions. [2022-11-19 06:47:23,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 06:47:23,877 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 107 transitions. [2022-11-19 06:47:23,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 06:47:23,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:23,883 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:47:23,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:47:24,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:24,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:47:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2034978234, now seen corresponding path program 1 times [2022-11-19 06:47:24,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:24,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369020779] [2022-11-19 06:47:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:47:24,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:47:24,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369020779] [2022-11-19 06:47:24,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369020779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:47:24,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784571607] [2022-11-19 06:47:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:24,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:24,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:24,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:47:24,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:47:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:24,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 06:47:24,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:47:24,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 06:47:24,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784571607] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:47:24,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:47:24,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 10] total 18 [2022-11-19 06:47:24,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435734280] [2022-11-19 06:47:24,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:47:24,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:47:24,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:47:24,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:47:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:47:24,854 INFO L87 Difference]: Start difference. First operand 78 states and 107 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 06:47:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:24,996 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-19 06:47:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:47:24,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-19 06:47:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:24,998 INFO L225 Difference]: With dead ends: 100 [2022-11-19 06:47:24,998 INFO L226 Difference]: Without dead ends: 83 [2022-11-19 06:47:24,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-19 06:47:25,000 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:25,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 196 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:47:25,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-19 06:47:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2022-11-19 06:47:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 60 states have internal predecessors, (79), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-19 06:47:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2022-11-19 06:47:25,027 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 41 [2022-11-19 06:47:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:25,032 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2022-11-19 06:47:25,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 06:47:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2022-11-19 06:47:25,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 06:47:25,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:25,034 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:47:25,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:47:25,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:25,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:47:25,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash 167072614, now seen corresponding path program 1 times [2022-11-19 06:47:25,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:25,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245146431] [2022-11-19 06:47:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:25,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:47:25,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:47:25,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245146431] [2022-11-19 06:47:25,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245146431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:47:25,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397012210] [2022-11-19 06:47:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:25,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:25,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:25,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:47:25,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:47:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:25,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:47:25,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 06:47:25,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:47:25,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397012210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:25,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [612135614] [2022-11-19 06:47:25,688 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-19 06:47:25,688 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:47:25,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:47:25,689 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:47:25,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:47:51,293 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-19 06:47:51,361 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-19 06:47:51,494 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:48:29,415 WARN L233 SmtUtils]: Spent 29.25s on a formula simplification. DAG size of input: 229 DAG size of output: 205 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:48:29,839 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2410#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-19 06:48:29,839 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:48:29,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:48:29,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-19 06:48:29,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238885318] [2022-11-19 06:48:29,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:48:29,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 06:48:29,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:29,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 06:48:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-19 06:48:29,842 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:48:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:30,208 INFO L93 Difference]: Finished difference Result 215 states and 308 transitions. [2022-11-19 06:48:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 06:48:30,209 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2022-11-19 06:48:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:30,218 INFO L225 Difference]: With dead ends: 215 [2022-11-19 06:48:30,219 INFO L226 Difference]: Without dead ends: 147 [2022-11-19 06:48:30,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2022-11-19 06:48:30,228 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 73 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:30,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 97 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:48:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-19 06:48:30,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 91. [2022-11-19 06:48:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-19 06:48:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2022-11-19 06:48:30,282 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 43 [2022-11-19 06:48:30,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:30,283 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2022-11-19 06:48:30,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:48:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2022-11-19 06:48:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 06:48:30,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:30,287 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:30,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:30,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:30,494 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:30,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:30,495 INFO L85 PathProgramCache]: Analyzing trace with hash 851254654, now seen corresponding path program 1 times [2022-11-19 06:48:30,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:30,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452856588] [2022-11-19 06:48:30,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:30,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:48:30,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:30,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452856588] [2022-11-19 06:48:30,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452856588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:48:30,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103349161] [2022-11-19 06:48:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:30,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:30,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:30,734 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:30,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:48:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:30,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:48:30,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:48:30,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:48:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-19 06:48:31,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103349161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:48:31,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [406384684] [2022-11-19 06:48:31,159 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-19 06:48:31,159 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:48:31,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:48:31,160 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:48:31,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:48:55,622 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-19 06:48:55,671 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-19 06:48:55,950 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:49:35,116 WARN L233 SmtUtils]: Spent 29.16s on a formula simplification. DAG size of input: 229 DAG size of output: 205 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:49:35,563 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3149#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-19 06:49:35,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:49:35,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:49:35,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 7] total 17 [2022-11-19 06:49:35,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730901415] [2022-11-19 06:49:35,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:49:35,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 06:49:35,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:35,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 06:49:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 06:49:35,566 INFO L87 Difference]: Start difference. First operand 91 states and 120 transitions. Second operand has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-19 06:49:36,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:36,388 INFO L93 Difference]: Finished difference Result 185 states and 240 transitions. [2022-11-19 06:49:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 06:49:36,389 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 45 [2022-11-19 06:49:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:36,390 INFO L225 Difference]: With dead ends: 185 [2022-11-19 06:49:36,390 INFO L226 Difference]: Without dead ends: 78 [2022-11-19 06:49:36,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=237, Invalid=1833, Unknown=0, NotChecked=0, Total=2070 [2022-11-19 06:49:36,393 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 62 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:36,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 310 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:49:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-19 06:49:36,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2022-11-19 06:49:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 06:49:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2022-11-19 06:49:36,415 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 45 [2022-11-19 06:49:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:36,415 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2022-11-19 06:49:36,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-19 06:49:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2022-11-19 06:49:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 06:49:36,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:36,417 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:36,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:36,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:36,618 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:36,619 INFO L85 PathProgramCache]: Analyzing trace with hash 582196736, now seen corresponding path program 2 times [2022-11-19 06:49:36,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:36,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633788881] [2022-11-19 06:49:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:36,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 06:49:36,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:36,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633788881] [2022-11-19 06:49:36,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633788881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:49:36,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091768836] [2022-11-19 06:49:36,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:49:36,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:36,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:36,946 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:36,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:49:37,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 06:49:37,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:49:37,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 06:49:37,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 06:49:37,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-19 06:49:37,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091768836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:37,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [82273039] [2022-11-19 06:49:37,925 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-19 06:49:37,925 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:37,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:37,926 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:37,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:49:59,382 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-19 06:49:59,434 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-19 06:49:59,588 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:50:34,533 WARN L233 SmtUtils]: Spent 26.47s on a formula simplification. DAG size of input: 229 DAG size of output: 205 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:50:34,991 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3856#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-19 06:50:34,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:50:34,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:50:34,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2022-11-19 06:50:34,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930698739] [2022-11-19 06:50:34,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:50:34,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 06:50:34,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:34,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 06:50:34,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 06:50:34,994 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 21 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-19 06:50:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:36,046 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2022-11-19 06:50:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 06:50:36,047 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 52 [2022-11-19 06:50:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:36,048 INFO L225 Difference]: With dead ends: 110 [2022-11-19 06:50:36,048 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:50:36,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=315, Invalid=2441, Unknown=0, NotChecked=0, Total=2756 [2022-11-19 06:50:36,050 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 162 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:36,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 203 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:50:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:50:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:50:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:50:36,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2022-11-19 06:50:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:36,053 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:50:36,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-19 06:50:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:50:36,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:50:36,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:50:36,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-19 06:50:36,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:36,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:50:49,700 INFO L895 garLoopResultBuilder]: At program point L73(lines 28 81) the Hoare annotation is: (let ((.cse4 (not (= |base2flt_#in~m| 0))) (.cse3 (not (= |#NULL.offset| 0)))) (let ((.cse0 (+ 129 base2flt_~e)) (.cse1 (let ((.cse16 (select |#memory_int| 1))) (let ((.cse5 (not (= (select .cse16 0) 48))) (.cse6 (not (= 2 (select |#length| 1)))) (.cse7 (not (< 0 |#StackHeapBarrier|))) (.cse8 (not (= (select |#valid| 3) 1))) (.cse9 (not (= (select |#length| 3) 12))) (.cse10 (not (= (select |#valid| 0) 0))) (.cse11 (not (= (select .cse16 1) 0))) (.cse12 (not (= 22 (select |#length| 2)))) (.cse13 (not (= (select |#valid| 1) 1))) (.cse14 (not (= (select |#valid| 2) 1))) (.cse15 (not (= |base2flt_#in~e| 0)))) (and (or .cse5 .cse3 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse4 .cse14 .cse15) (or .cse5 .cse3 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (not (= |base2flt_#in~m| 1))))))) (.cse2 (not (= |#NULL.base| 0)))) (and (or (and (= (mod base2flt_~m 2) 0) (< 0 .cse0) (<= base2flt_~e 126)) .cse1 .cse2) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse3 (and (<= 0 .cse0) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse4) (<= base2flt_~e 127) (or .cse4 (<= (mod |base2flt_#res| 4294967296) 0))) .cse2 (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))) (or .cse1 .cse2 (not (<= (mod |base2flt_#in~m| 4294967296) 0)))))) [2022-11-19 06:50:49,700 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: (let ((.cse1 (not (= |#NULL.offset| 0))) (.cse3 (not (= |base2flt_#in~m| 0))) (.cse2 (not (= |#NULL.base| 0)))) (and (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) .cse1 (not (= 2 (select |#length| 1))) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) .cse2 .cse3 (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse1 (and (<= |base2flt_#in~e| base2flt_~e) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse3) (<= base2flt_~e 127) (or .cse3 (<= (mod |base2flt_#res| 4294967296) 0)) (not (= |base2flt_#in~m| 1))) .cse2 (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))))) [2022-11-19 06:50:49,701 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2022-11-19 06:50:49,701 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2022-11-19 06:50:49,701 INFO L902 garLoopResultBuilder]: At program point base2fltENTRY(lines 24 82) the Hoare annotation is: true [2022-11-19 06:50:49,702 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse0 (+ 129 base2flt_~e)) (.cse9 (= base2flt_~e |base2flt_#in~e|)) (.cse3 (= base2flt_~m |base2flt_#in~m|))) (let ((.cse6 (not (= |#NULL.offset| 0))) (.cse7 (not (= |#NULL.base| 0))) (.cse1 (not (= |base2flt_#in~m| 0))) (.cse4 (or (<= (+ 128 base2flt_~e) 0) (and .cse9 (= (mod base2flt_~m 4294967296) 0) .cse3))) (.cse5 (< 0 .cse0)) (.cse2 (mod |base2flt_#res| 4294967296))) (and (or (not (<= 0 (+ 128 |base2flt_#in~e|))) (and (<= 0 .cse0) (<= base2flt_~e 127) (or .cse1 (< .cse2 1))) (and .cse3 .cse4 .cse5 (= base2flt_~__retres4~0 0)) .cse6 .cse7 (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))) (let ((.cse8 (select |#memory_int| 1))) (or (not (= (select .cse8 0) 48)) .cse6 (not (= 2 (select |#length| 1))) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse8 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) .cse7 .cse1 (and .cse3 .cse4 .cse5 (or .cse9 (<= .cse2 0)) (<= base2flt_~__retres4~0 0) (<= 0 base2flt_~__retres4~0)) (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0))))))) [2022-11-19 06:50:49,702 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2022-11-19 06:50:49,702 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2022-11-19 06:50:49,702 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2022-11-19 06:50:49,703 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2022-11-19 06:50:49,703 INFO L895 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: (let ((.cse0 (not (= |#NULL.offset| 0))) (.cse2 (not (= |#NULL.base| 0))) (.cse1 (not (= |base2flt_#in~m| 0)))) (and (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse0 (and (= (mod base2flt_~m 2) 0) (< 0 (+ 129 base2flt_~e)) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse1) (<= base2flt_~e 126) (or .cse1 (<= (mod |base2flt_#res| 4294967296) 0))) .cse2 (and (= base2flt_~e |base2flt_#in~e|) (= base2flt_~m |base2flt_#in~m|) (not (= (mod base2flt_~m 4294967296) 0))) (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))) (let ((.cse3 (select |#memory_int| 1))) (or (not (= (select .cse3 0) 48)) .cse0 (not (= 2 (select |#length| 1))) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse3 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) .cse2 .cse1 (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))))) [2022-11-19 06:50:49,703 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2022-11-19 06:50:49,703 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:50:49,704 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2022-11-19 06:50:49,704 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2022-11-19 06:50:49,704 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2022-11-19 06:50:49,704 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2022-11-19 06:50:49,704 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2022-11-19 06:50:49,704 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2022-11-19 06:50:49,705 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 06:50:49,705 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2022-11-19 06:50:49,705 INFO L895 garLoopResultBuilder]: At program point L239(line 239) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= |ULTIMATE.start_main_~zero~0#1| 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 06:50:49,705 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2022-11-19 06:50:49,706 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:50:49,706 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2022-11-19 06:50:49,706 INFO L895 garLoopResultBuilder]: At program point L256-1(lines 256 272) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 06:50:49,706 INFO L895 garLoopResultBuilder]: At program point L240(line 240) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= |ULTIMATE.start_main_~zero~0#1| 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 06:50:49,707 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2022-11-19 06:50:49,707 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)) (.cse1 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 0 |ULTIMATE.start_main_~tmp___1~0#1|) (<= .cse0 0) (<= (mod |ULTIMATE.start_main_~r_mul~0#1| 4294967296) .cse0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) .cse0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 06:50:49,707 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2022-11-19 06:50:49,708 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (let ((.cse17 (select |#memory_int| 1))) (let ((.cse0 (<= |ULTIMATE.start_main_~eb~2#1| 127)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128))) (.cse3 (= 22 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse8 (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128))) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse17 0) 48)) (.cse12 (<= |ULTIMATE.start_main_~ea~2#1| 127)) (.cse13 (= (select .cse17 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~zero~0#1| 0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (= |ULTIMATE.start_main_~sa~0#1| 1) .cse12 .cse13 .cse14 .cse15) (let ((.cse16 (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and .cse0 .cse1 .cse2 .cse3 (<= .cse16 0) .cse4 .cse5 (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) .cse16) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15))))) [2022-11-19 06:50:49,708 INFO L895 garLoopResultBuilder]: At program point L241(line 241) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= |ULTIMATE.start_main_~zero~0#1| 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 06:50:49,708 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2022-11-19 06:50:49,708 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-19 06:50:49,708 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-11-19 06:50:49,709 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2022-11-19 06:50:49,709 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2022-11-19 06:50:49,709 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2022-11-19 06:50:49,709 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-19 06:50:49,713 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-19 06:50:49,716 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:50:49,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:50:49 BoogieIcfgContainer [2022-11-19 06:50:49,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:50:49,769 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:50:49,769 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:50:49,769 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:50:49,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:47:09" (3/4) ... [2022-11-19 06:50:49,773 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:50:49,779 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2022-11-19 06:50:49,780 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-19 06:50:49,793 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2022-11-19 06:50:49,794 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-19 06:50:49,795 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 06:50:49,796 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:50:49,827 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(0 <= 128 + \old(e)) || ((0 <= 129 + e && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 < 1))) || (((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && __retres4 == 0)) || !(#NULL == 0)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) && ((((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || (((((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && (e == \old(e) || \result % 4294967296 <= 0)) && __retres4 <= 0) && 0 <= __retres4)) || !(\valid[2] == 1)) || !(\old(e) == 0)) [2022-11-19 06:50:49,827 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((m % 2 == 0 && 0 < 129 + e) && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 126) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || ((e == \old(e) && m == \old(m)) && !(m % 4294967296 == 0))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) && (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) [2022-11-19 06:50:49,827 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((\old(e) <= e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0)) && !(\old(m) == 1))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) [2022-11-19 06:50:49,828 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((m % 2 == 0 && 0 < 129 + e) && e <= 126) || (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1)))) || !(#NULL == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || (((0 <= 129 + e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127))) && (((((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1))) || !(#NULL == 0)) || !(\old(m) % 4294967296 <= 0)) [2022-11-19 06:50:49,887 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:50:49,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:50:49,889 INFO L158 Benchmark]: Toolchain (without parser) took 222105.80ms. Allocated memory was 144.7MB in the beginning and 574.6MB in the end (delta: 429.9MB). Free memory was 110.6MB in the beginning and 302.7MB in the end (delta: -192.1MB). Peak memory consumption was 237.8MB. Max. memory is 16.1GB. [2022-11-19 06:50:49,889 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:50:49,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.97ms. Allocated memory is still 144.7MB. Free memory was 110.5MB in the beginning and 117.6MB in the end (delta: -7.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:50:49,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.03ms. Allocated memory is still 144.7MB. Free memory was 117.0MB in the beginning and 115.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:50:49,890 INFO L158 Benchmark]: Boogie Preprocessor took 36.89ms. Allocated memory is still 144.7MB. Free memory was 115.5MB in the beginning and 113.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:50:49,891 INFO L158 Benchmark]: RCFGBuilder took 1081.36ms. Allocated memory is still 144.7MB. Free memory was 113.4MB in the beginning and 74.0MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-19 06:50:49,892 INFO L158 Benchmark]: TraceAbstraction took 220311.27ms. Allocated memory was 144.7MB in the beginning and 574.6MB in the end (delta: 429.9MB). Free memory was 73.0MB in the beginning and 306.9MB in the end (delta: -233.9MB). Peak memory consumption was 305.6MB. Max. memory is 16.1GB. [2022-11-19 06:50:49,893 INFO L158 Benchmark]: Witness Printer took 119.32ms. Allocated memory is still 574.6MB. Free memory was 306.9MB in the beginning and 302.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:50:49,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 491.97ms. Allocated memory is still 144.7MB. Free memory was 110.5MB in the beginning and 117.6MB in the end (delta: -7.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.03ms. Allocated memory is still 144.7MB. Free memory was 117.0MB in the beginning and 115.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.89ms. Allocated memory is still 144.7MB. Free memory was 115.5MB in the beginning and 113.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1081.36ms. Allocated memory is still 144.7MB. Free memory was 113.4MB in the beginning and 74.0MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 220311.27ms. Allocated memory was 144.7MB in the beginning and 574.6MB in the end (delta: 429.9MB). Free memory was 73.0MB in the beginning and 306.9MB in the end (delta: -233.9MB). Peak memory consumption was 305.6MB. Max. memory is 16.1GB. * Witness Printer took 119.32ms. Allocated memory is still 574.6MB. Free memory was 306.9MB in the beginning and 302.7MB in the end (delta: 4.2MB). 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 220.1s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 13.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 682 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 652 mSDsluCounter, 1705 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1469 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2252 IncrementalHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 236 mSDtfsCounter, 2252 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 925 GetRequests, 668 SyntacticMatches, 1 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3083 ImplicationChecksByTransitivity, 122.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=5, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 201 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 131 PreInvPairs, 287 NumberOfFragments, 1515 HoareAnnotationTreeSize, 131 FomulaSimplifications, 14223 FormulaSimplificationTreeSizeReduction, 8.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 185848 FormulaSimplificationTreeSizeReductionInter, 5.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 578 NumberOfCodeBlocks, 572 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 846 ConstructedInterpolants, 0 QuantifiedInterpolants, 2056 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1069 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 438/594 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: OVERALL_TIME: 1.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 33, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 47, TOOLS_POST_TIME: 0.4s, TOOLS_POST_CALL_APPLICATIONS: 18, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 12, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 77, TOOLS_QUANTIFIERELIM_TIME: 0.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 113, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 17, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 33, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 12, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 527, DAG_COMPRESSION_RETAINED_NODES: 116, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((m % 2 == 0 && 0 < 129 + e) && e <= 126) || (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1)))) || !(#NULL == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || (((0 <= 129 + e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127))) && (((((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1))) || !(#NULL == 0)) || !(\old(m) % 4294967296 <= 0)) - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (((((((((((((((((eb <= 127 && unknown-#length-unknown[3] == 12) && 0 <= ea + 128) && 22 == unknown-#length-unknown[2]) && zero == 0) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && \valid[1] == 1) && \valid[0] == 0) && 0 <= eb + 128) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && sa == 1) && ea <= 127) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((eb <= 127 && unknown-#length-unknown[3] == 12) && 0 <= ea + 128) && 22 == unknown-#length-unknown[2]) && zero % 4294967296 <= 0) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && __retres10 % 4294967296 <= zero % 4294967296) && \valid[1] == 1) && \valid[0] == 0) && 0 <= eb + 128) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && ea <= 127) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((!(0 <= 128 + \old(e)) || ((0 <= 129 + e && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 < 1))) || (((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && __retres4 == 0)) || !(#NULL == 0)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) && ((((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || (((((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && (e == \old(e) || \result % 4294967296 <= 0)) && __retres4 <= 0) && 0 <= __retres4)) || !(\valid[2] == 1)) || !(\old(e) == 0)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((m % 2 == 0 && 0 < 129 + e) && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 126) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || ((e == \old(e) && m == \old(m)) && !(m % 4294967296 == 0))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) && (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((\old(e) <= e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0)) && !(\old(m) == 1))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) - InvariantResult [Line: 256]: Loop Invariant Derived loop invariant: ((((((((((((((eb <= 127 && unknown-#length-unknown[3] == 12) && 0 <= ea + 128) && 22 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && \valid[1] == 1) && \valid[0] == 0) && 0 <= eb + 128) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && ea <= 127) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-19 06:50:50,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0c86618-9557-4d58-bba3-1ed6f8b35caa/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 Result: TRUE