./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 4e7fbc69 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_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/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_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 15:39:17,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:39:17,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:39:17,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:39:17,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:39:17,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:39:17,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:39:17,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:39:17,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:39:17,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:39:17,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:39:17,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:39:17,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:39:17,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:39:17,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:39:17,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:39:17,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:39:17,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:39:17,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:39:17,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:39:17,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:39:17,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:39:17,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:39:17,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:39:17,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:39:17,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:39:17,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:39:17,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:39:17,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:39:17,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:39:17,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:39:17,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:39:17,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:39:17,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:39:17,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:39:17,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:39:17,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:39:17,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:39:17,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:39:17,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:39:17,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:39:17,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:39:17,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:39:17,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:39:17,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:39:17,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:39:17,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:39:17,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:39:17,494 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:39:17,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:39:17,495 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:39:17,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:39:17,519 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:39:17,519 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:39:17,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:39:17,520 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:39:17,520 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:39:17,521 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:39:17,521 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:39:17,521 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:39:17,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:39:17,523 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:39:17,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:39:17,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:39:17,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:39:17,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:39:17,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:39:17,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:39:17,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:39:17,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:39:17,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:39:17,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:39:17,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:39:17,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:39:17,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:39:17,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:39:17,529 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:39:17,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:39:17,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:39:17,530 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:39:17,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:39:17,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:39:17,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:39:17,533 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_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2022-11-23 15:39:17,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:39:17,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:39:17,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:39:17,917 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:39:17,917 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:39:17,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-23 15:39:21,574 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:39:21,901 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:39:21,902 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-23 15:39:21,911 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/data/c61b37854/dbc62cdfef714ac0aef3279d05a4eacd/FLAGf7501eab6 [2022-11-23 15:39:22,207 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/data/c61b37854/dbc62cdfef714ac0aef3279d05a4eacd [2022-11-23 15:39:22,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:39:22,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:39:22,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:39:22,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:39:22,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:39:22,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445e1f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22, skipping insertion in model container [2022-11-23 15:39:22,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:39:22,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:39:22,440 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-23 15:39:22,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:39:22,511 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:39:22,527 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-23 15:39:22,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:39:22,596 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:39:22,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22 WrapperNode [2022-11-23 15:39:22,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:39:22,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:39:22,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:39:22,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:39:22,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,647 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 166 [2022-11-23 15:39:22,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:39:22,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:39:22,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:39:22,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:39:22,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,682 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:39:22,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:39:22,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:39:22,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:39:22,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (1/1) ... [2022-11-23 15:39:22,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:39:22,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:22,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:39:22,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:39:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:39:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:39:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-23 15:39:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-23 15:39:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:39:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:39:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 15:39:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 15:39:22,894 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:39:22,897 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:39:23,460 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:39:23,845 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:39:23,846 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:39:23,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:39:23 BoogieIcfgContainer [2022-11-23 15:39:23,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:39:23,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:39:23,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:39:23,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:39:23,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:39:22" (1/3) ... [2022-11-23 15:39:23,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515bdac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:39:23, skipping insertion in model container [2022-11-23 15:39:23,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:22" (2/3) ... [2022-11-23 15:39:23,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515bdac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:39:23, skipping insertion in model container [2022-11-23 15:39:23,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:39:23" (3/3) ... [2022-11-23 15:39:23,866 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2022-11-23 15:39:23,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:39:23,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:39:23,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:39:23,954 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;@63942e72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:39:23,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:39:23,987 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) [2022-11-23 15:39:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 15:39:23,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:23,998 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] [2022-11-23 15:39:23,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:39:24,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:24,006 INFO L85 PathProgramCache]: Analyzing trace with hash 7323111, now seen corresponding path program 1 times [2022-11-23 15:39:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:24,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92632250] [2022-11-23 15:39:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:24,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:39:24,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:24,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92632250] [2022-11-23 15:39:24,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92632250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:24,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776131656] [2022-11-23 15:39:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:24,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:24,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:24,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:24,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:39:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:24,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 15:39:24,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:39:25,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:39:25,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776131656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:39:25,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [992854760] [2022-11-23 15:39:25,813 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-23 15:39:25,814 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:39:25,825 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:39:25,832 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:39:25,834 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:39:26,072 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-11-23 15:39:26,185 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:39:27,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [992854760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:27,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:39:27,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 12, 11] total 29 [2022-11-23 15:39:27,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98772291] [2022-11-23 15:39:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:27,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:39:27,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:39:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-11-23 15:39:27,639 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) [2022-11-23 15:39:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:28,097 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2022-11-23 15:39:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:39:28,100 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 [2022-11-23 15:39:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:28,113 INFO L225 Difference]: With dead ends: 108 [2022-11-23 15:39:28,113 INFO L226 Difference]: Without dead ends: 65 [2022-11-23 15:39:28,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-11-23 15:39:28,125 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 [2022-11-23 15:39:28,127 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] [2022-11-23 15:39:28,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-23 15:39:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2022-11-23 15:39:28,191 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) [2022-11-23 15:39:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2022-11-23 15:39:28,195 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2022-11-23 15:39:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:28,196 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2022-11-23 15:39:28,196 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) [2022-11-23 15:39:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2022-11-23 15:39:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 15:39:28,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:28,199 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] [2022-11-23 15:39:28,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:39:28,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 15:39:28,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:39:28,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash 39928315, now seen corresponding path program 1 times [2022-11-23 15:39:28,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:28,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041501552] [2022-11-23 15:39:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:28,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:28,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:39:28,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:28,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041501552] [2022-11-23 15:39:28,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041501552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:28,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674743385] [2022-11-23 15:39:28,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:28,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:28,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:28,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:28,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:39:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:28,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 15:39:28,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:39:29,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:39:29,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674743385] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:39:29,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1683529346] [2022-11-23 15:39:29,413 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 15:39:29,413 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:39:29,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:39:29,414 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:39:29,415 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:39:30,129 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-23 15:39:30,145 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 15:39:30,269 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:39:33,039 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 [2022-11-23 15:39:33,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:39:33,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:39:33,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 11] total 23 [2022-11-23 15:39:33,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643135331] [2022-11-23 15:39:33,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:39:33,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 15:39:33,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:33,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 15:39:33,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 15:39:33,043 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) [2022-11-23 15:39:34,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:34,362 INFO L93 Difference]: Finished difference Result 164 states and 256 transitions. [2022-11-23 15:39:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 15:39:34,366 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 [2022-11-23 15:39:34,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:34,369 INFO L225 Difference]: With dead ends: 164 [2022-11-23 15:39:34,370 INFO L226 Difference]: Without dead ends: 124 [2022-11-23 15:39:34,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=329, Invalid=2863, Unknown=0, NotChecked=0, Total=3192 [2022-11-23 15:39:34,373 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 [2022-11-23 15:39:34,373 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] [2022-11-23 15:39:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-23 15:39:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 70. [2022-11-23 15:39:34,419 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) [2022-11-23 15:39:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2022-11-23 15:39:34,427 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 37 [2022-11-23 15:39:34,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:34,428 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2022-11-23 15:39:34,428 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) [2022-11-23 15:39:34,428 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2022-11-23 15:39:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 15:39:34,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:34,437 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] [2022-11-23 15:39:34,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:39:34,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:34,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:39:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1768125286, now seen corresponding path program 1 times [2022-11-23 15:39:34,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:34,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92737969] [2022-11-23 15:39:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:34,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:39:34,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:34,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92737969] [2022-11-23 15:39:34,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92737969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:34,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867382241] [2022-11-23 15:39:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:34,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:34,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:34,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:34,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:39:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:35,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:39:35,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:39:35,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:39:35,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867382241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:39:35,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1573295366] [2022-11-23 15:39:35,194 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 15:39:35,195 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:39:35,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:39:35,196 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:39:35,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:39:35,958 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 15:39:36,062 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:39:37,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1573295366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:37,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:39:37,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 5, 5] total 27 [2022-11-23 15:39:37,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95679976] [2022-11-23 15:39:37,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:37,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 15:39:37,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 15:39:37,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-11-23 15:39:37,455 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) [2022-11-23 15:39:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:38,936 INFO L93 Difference]: Finished difference Result 139 states and 206 transitions. [2022-11-23 15:39:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 15:39:38,938 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 [2022-11-23 15:39:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:38,940 INFO L225 Difference]: With dead ends: 139 [2022-11-23 15:39:38,940 INFO L226 Difference]: Without dead ends: 124 [2022-11-23 15:39:38,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 15:39:38,942 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 110 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:38,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 269 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 15:39:38,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-23 15:39:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 78. [2022-11-23 15:39:39,005 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) [2022-11-23 15:39:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 107 transitions. [2022-11-23 15:39:39,009 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 107 transitions. Word has length 39 [2022-11-23 15:39:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:39,010 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 107 transitions. [2022-11-23 15:39:39,010 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) [2022-11-23 15:39:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 107 transitions. [2022-11-23 15:39:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-23 15:39:39,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:39,018 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] [2022-11-23 15:39:39,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 15:39:39,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 15:39:39,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:39:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:39,230 INFO L85 PathProgramCache]: Analyzing trace with hash 381072034, now seen corresponding path program 1 times [2022-11-23 15:39:39,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:39,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410903210] [2022-11-23 15:39:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:39,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:39,546 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:39:39,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:39,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410903210] [2022-11-23 15:39:39,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410903210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:39,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128153073] [2022-11-23 15:39:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:39,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:39,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:39,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:39,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:39:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:39,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 15:39:39,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:39:39,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:39:40,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128153073] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:40,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:39:40,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 10] total 18 [2022-11-23 15:39:40,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254590785] [2022-11-23 15:39:40,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:40,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:39:40,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:39:40,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:39:40,104 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) [2022-11-23 15:39:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:40,260 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-23 15:39:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:39:40,261 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 [2022-11-23 15:39:40,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:40,262 INFO L225 Difference]: With dead ends: 100 [2022-11-23 15:39:40,263 INFO L226 Difference]: Without dead ends: 83 [2022-11-23 15:39:40,263 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 [2022-11-23 15:39:40,265 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 [2022-11-23 15:39:40,265 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] [2022-11-23 15:39:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-23 15:39:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2022-11-23 15:39:40,329 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) [2022-11-23 15:39:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2022-11-23 15:39:40,330 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 41 [2022-11-23 15:39:40,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:40,331 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2022-11-23 15:39:40,331 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) [2022-11-23 15:39:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2022-11-23 15:39:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 15:39:40,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:40,333 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] [2022-11-23 15:39:40,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:39:40,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:40,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:39:40,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1396551474, now seen corresponding path program 1 times [2022-11-23 15:39:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:40,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879064029] [2022-11-23 15:39:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:40,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:39:40,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879064029] [2022-11-23 15:39:40,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879064029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:39:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771103288] [2022-11-23 15:39:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:40,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:39:40,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:40,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:39:40,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:39:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:40,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:39:40,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:39:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:39:40,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:39:40,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771103288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:39:40,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [116683143] [2022-11-23 15:39:40,927 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-23 15:39:40,927 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:39:40,928 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:39:40,928 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:39:40,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:40:34,288 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-23 15:40:34,347 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 15:40:34,472 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:40:59,105 WARN L233 SmtUtils]: Spent 11.78s on a formula simplification. DAG size of input: 335 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:40:59,463 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 [2022-11-23 15:40:59,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:40:59,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:40:59,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-23 15:40:59,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589772609] [2022-11-23 15:40:59,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:40:59,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 15:40:59,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:59,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 15:40:59,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-23 15:40:59,466 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) [2022-11-23 15:40:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:59,734 INFO L93 Difference]: Finished difference Result 215 states and 308 transitions. [2022-11-23 15:40:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:40:59,734 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 [2022-11-23 15:40:59,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:59,744 INFO L225 Difference]: With dead ends: 215 [2022-11-23 15:40:59,744 INFO L226 Difference]: Without dead ends: 147 [2022-11-23 15:40:59,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 15:40:59,753 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 [2022-11-23 15:40:59,755 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] [2022-11-23 15:40:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-23 15:40:59,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 91. [2022-11-23 15:40:59,792 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) [2022-11-23 15:40:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2022-11-23 15:40:59,795 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 43 [2022-11-23 15:40:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:59,797 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2022-11-23 15:40:59,797 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) [2022-11-23 15:40:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2022-11-23 15:40:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 15:40:59,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:59,799 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] [2022-11-23 15:40:59,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 15:41:00,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:00,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:41:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:41:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash -206859766, now seen corresponding path program 1 times [2022-11-23 15:41:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:41:00,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294668240] [2022-11-23 15:41:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:41:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:41:00,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:41:00,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294668240] [2022-11-23 15:41:00,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294668240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:41:00,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536136752] [2022-11-23 15:41:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:41:00,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:41:00,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:41:00,208 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:41:00,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:41:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:41:00,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 15:41:00,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:41:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:41:00,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:41:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-23 15:41:00,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536136752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:41:00,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1210686803] [2022-11-23 15:41:00,638 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-23 15:41:00,638 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:41:00,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:41:00,638 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:41:00,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:41:47,116 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-23 15:41:47,158 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 15:41:47,370 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:41:56,961 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 180 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:42:14,846 WARN L233 SmtUtils]: Spent 11.70s on a formula simplification. DAG size of input: 335 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:42:15,477 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 [2022-11-23 15:42:15,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:15,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:15,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 7] total 17 [2022-11-23 15:42:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319426360] [2022-11-23 15:42:15,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:15,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 15:42:15,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:15,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 15:42:15,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 15:42:15,479 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) [2022-11-23 15:42:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:16,090 INFO L93 Difference]: Finished difference Result 185 states and 240 transitions. [2022-11-23 15:42:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 15:42:16,095 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 [2022-11-23 15:42:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:16,096 INFO L225 Difference]: With dead ends: 185 [2022-11-23 15:42:16,096 INFO L226 Difference]: Without dead ends: 78 [2022-11-23 15:42:16,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=237, Invalid=1833, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 15:42:16,098 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 62 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-23 15:42:16,099 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] [2022-11-23 15:42:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-23 15:42:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2022-11-23 15:42:16,115 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) [2022-11-23 15:42:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2022-11-23 15:42:16,116 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 45 [2022-11-23 15:42:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:16,117 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2022-11-23 15:42:16,117 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) [2022-11-23 15:42:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2022-11-23 15:42:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 15:42:16,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:16,118 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] [2022-11-23 15:42:16,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:16,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:16,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:42:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash -55065420, now seen corresponding path program 2 times [2022-11-23 15:42:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:16,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250862831] [2022-11-23 15:42:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 15:42:16,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:16,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250862831] [2022-11-23 15:42:16,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250862831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:16,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465036635] [2022-11-23 15:42:16,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:16,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:16,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:16,563 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:16,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:42:16,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 15:42:16,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:16,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 15:42:16,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 15:42:17,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 15:42:17,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465036635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:17,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1745358282] [2022-11-23 15:42:17,610 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-23 15:42:17,610 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:17,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:17,610 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:17,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:43:03,259 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-23 15:43:03,297 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-23 15:43:03,478 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:43:29,209 WARN L233 SmtUtils]: Spent 11.88s on a formula simplification. DAG size of input: 335 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:43:29,915 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3857#(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 [2022-11-23 15:43:29,916 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:43:29,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:43:29,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 22 [2022-11-23 15:43:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318531478] [2022-11-23 15:43:29,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:43:29,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 15:43:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 15:43:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 15:43:29,918 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 22 states, 20 states have (on average 3.0) 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), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-23 15:43:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:31,069 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2022-11-23 15:43:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 15:43:31,069 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.0) 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), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 52 [2022-11-23 15:43:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:31,070 INFO L225 Difference]: With dead ends: 110 [2022-11-23 15:43:31,070 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:43:31,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=321, Invalid=2541, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 15:43:31,072 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 164 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:31,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 191 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:43:31,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:43:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:43:31,073 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) [2022-11-23 15:43:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:43:31,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2022-11-23 15:43:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:31,074 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:43:31,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.0) 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), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-23 15:43:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:43:31,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:43:31,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:43:31,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:43:31,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 15:43:31,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:43:43,627 INFO L895 garLoopResultBuilder]: At program point L73(lines 28 81) the Hoare annotation is: (let ((.cse3 (not (= |#NULL.offset| 0))) (.cse1 (+ 129 base2flt_~e)) (.cse12 (not (= |base2flt_#in~m| 0))) (.cse16 (not (= |#NULL.base| 0)))) (and (let ((.cse0 (= |base2flt_#in~m| 1))) (or (and (= (mod base2flt_~m 2) 0) .cse0 (< 0 .cse1) (<= base2flt_~e 126)) (let ((.cse15 (select |#memory_int| 1))) (let ((.cse2 (not (= (select .cse15 0) 48))) (.cse4 (not (= 2 (select |#length| 1)))) (.cse5 (not (< 0 |#StackHeapBarrier|))) (.cse6 (not (= (select |#valid| 3) 1))) (.cse7 (not (= (select |#length| 3) 12))) (.cse8 (not (= (select |#valid| 0) 0))) (.cse9 (not (= (select .cse15 1) 0))) (.cse10 (not (= 22 (select |#length| 2)))) (.cse11 (not (= (select |#valid| 1) 1))) (.cse13 (not (= (select |#valid| 2) 1))) (.cse14 (not (= |base2flt_#in~e| 0)))) (and (or .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (or .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse13 .cse14 (not .cse0))))) .cse16)) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse3 (and (<= 0 .cse1) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse12) (<= base2flt_~e 127) (or .cse12 (<= (mod |base2flt_#res| 4294967296) 0))) .cse16 (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))))) [2022-11-23 15:43:43,627 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))))) [2022-11-23 15:43:43,628 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2022-11-23 15:43:43,628 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2022-11-23 15:43:43,628 INFO L902 garLoopResultBuilder]: At program point base2fltENTRY(lines 24 82) the Hoare annotation is: true [2022-11-23 15:43:43,628 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse9 (+ 129 base2flt_~e)) (.cse7 (= base2flt_~e |base2flt_#in~e|)) (.cse4 (= base2flt_~m |base2flt_#in~m|))) (let ((.cse5 (or (<= (+ 128 base2flt_~e) 0) (and .cse7 (= (mod base2flt_~m 4294967296) 0) .cse4))) (.cse6 (< 0 .cse9)) (.cse1 (not (= |#NULL.offset| 0))) (.cse2 (not (= |#NULL.base| 0))) (.cse3 (not (= |base2flt_#in~m| 0))) (.cse8 (mod |base2flt_#res| 4294967296))) (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 (and .cse4 .cse5 .cse6 (or .cse7 (<= .cse8 0)) (<= base2flt_~__retres4~0 0) (<= 0 base2flt_~__retres4~0)) (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) (and .cse4 .cse5 .cse6 (= base2flt_~__retres4~0 0)) .cse1 .cse2 (and (<= 0 .cse9) (<= base2flt_~e 127) (or .cse3 (< (+ .cse8 (* (div (+ 4294967295 (- .cse8)) 4294967296) 4294967296)) 1))) (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127)))))) [2022-11-23 15:43:43,629 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2022-11-23 15:43:43,629 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2022-11-23 15:43:43,629 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2022-11-23 15:43:43,629 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2022-11-23 15:43:43,630 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)))))) [2022-11-23 15:43:43,630 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2022-11-23 15:43:43,630 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 15:43:43,630 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2022-11-23 15:43:43,630 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2022-11-23 15:43:43,630 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2022-11-23 15:43:43,630 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2022-11-23 15:43:43,631 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2022-11-23 15:43:43,631 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2022-11-23 15:43:43,631 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))) [2022-11-23 15:43:43,631 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2022-11-23 15:43:43,632 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))) [2022-11-23 15:43:43,632 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2022-11-23 15:43:43,632 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:43:43,632 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2022-11-23 15:43:43,632 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))) [2022-11-23 15:43:43,633 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))) [2022-11-23 15:43:43,633 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2022-11-23 15:43:43,633 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))) [2022-11-23 15:43:43,633 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2022-11-23 15:43:43,634 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))))) [2022-11-23 15:43:43,634 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))) [2022-11-23 15:43:43,634 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2022-11-23 15:43:43,634 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-23 15:43:43,634 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-11-23 15:43:43,634 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2022-11-23 15:43:43,635 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2022-11-23 15:43:43,635 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2022-11-23 15:43:43,635 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-23 15:43:43,638 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-23 15:43:43,641 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:43:43,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:43:43 BoogieIcfgContainer [2022-11-23 15:43:43,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:43:43,668 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:43:43,668 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:43:43,669 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:43:43,669 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:39:23" (3/4) ... [2022-11-23 15:43:43,672 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:43:43,677 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2022-11-23 15:43:43,678 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-23 15:43:43,684 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 53 nodes and edges [2022-11-23 15:43:43,685 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-23 15:43:43,685 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 15:43:43,686 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:43:43,710 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)) || !(unknown-#in~m-unknown == 0)) || (((((m == unknown-#in~m-unknown && (128 + e <= 0 || ((e == unknown-#in~e-unknown && m % 4294967296 == 0) && m == unknown-#in~m-unknown))) && 0 < 129 + e) && (e == unknown-#in~e-unknown || \result % 4294967296 <= 0)) && __retres4 <= 0) && 0 <= __retres4)) || !(\valid[2] == 1)) || !(unknown-#in~e-unknown == 0)) && ((((((!(0 <= 128 + unknown-#in~e-unknown) || (((m == unknown-#in~m-unknown && (128 + e <= 0 || ((e == unknown-#in~e-unknown && m % 4294967296 == 0) && m == unknown-#in~m-unknown))) && 0 < 129 + e) && __retres4 == 0)) || !(#NULL == 0)) || !(#NULL == 0)) || ((0 <= 129 + e && e <= 127) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 + (4294967295 + -(\result % 4294967296)) / 4294967296 * 4294967296 < 1))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(unknown-#in~e-unknown <= 127)) [2022-11-23 15:43:43,710 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(0 <= 128 + unknown-#in~e-unknown) || !(#NULL == 0)) || ((((m % 2 == 0 && 0 < 129 + e) && (__retres4 % 4294967296 <= 0 || !(unknown-#in~m-unknown == 0))) && e <= 126) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || ((e == unknown-#in~e-unknown && m == unknown-#in~m-unknown) && !(m % 4294967296 == 0))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(unknown-#in~e-unknown <= 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)) || !(unknown-#in~m-unknown == 0)) || !(\valid[2] == 1)) || !(unknown-#in~e-unknown == 0)) [2022-11-23 15:43:43,710 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)) || !(unknown-#in~m-unknown == 0)) || !(\valid[2] == 1)) || !(unknown-#in~e-unknown == 0)) && (((((!(0 <= 128 + unknown-#in~e-unknown) || !(#NULL == 0)) || ((((unknown-#in~e-unknown <= e && (__retres4 % 4294967296 <= 0 || !(unknown-#in~m-unknown == 0))) && e <= 127) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 <= 0)) && !(unknown-#in~m-unknown == 1))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(unknown-#in~e-unknown <= 127)) [2022-11-23 15:43:43,711 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((m % 2 == 0 && unknown-#in~m-unknown == 1) && 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)) || !(unknown-#in~m-unknown == 0)) || !(\valid[2] == 1)) || !(unknown-#in~e-unknown == 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)) || !(unknown-#in~e-unknown == 0)) || !(unknown-#in~m-unknown == 1)))) || !(#NULL == 0)) && (((((!(0 <= 128 + unknown-#in~e-unknown) || !(#NULL == 0)) || (((0 <= 129 + e && (__retres4 % 4294967296 <= 0 || !(unknown-#in~m-unknown == 0))) && e <= 127) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(unknown-#in~e-unknown <= 127)) [2022-11-23 15:43:43,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:43:43,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:43:43,736 INFO L158 Benchmark]: Toolchain (without parser) took 261523.64ms. Allocated memory was 161.5MB in the beginning and 612.4MB in the end (delta: 450.9MB). Free memory was 126.4MB in the beginning and 330.6MB in the end (delta: -204.2MB). Peak memory consumption was 248.4MB. Max. memory is 16.1GB. [2022-11-23 15:43:43,736 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 161.5MB. Free memory was 128.7MB in the beginning and 128.6MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:43:43,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.26ms. Allocated memory is still 161.5MB. Free memory was 125.9MB in the beginning and 112.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:43:43,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.35ms. Allocated memory is still 161.5MB. Free memory was 112.4MB in the beginning and 110.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:43:43,737 INFO L158 Benchmark]: Boogie Preprocessor took 39.10ms. Allocated memory is still 161.5MB. Free memory was 110.3MB in the beginning and 108.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:43:43,737 INFO L158 Benchmark]: RCFGBuilder took 1161.20ms. Allocated memory is still 161.5MB. Free memory was 108.7MB in the beginning and 63.1MB in the end (delta: 45.6MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-23 15:43:43,738 INFO L158 Benchmark]: TraceAbstraction took 259812.69ms. Allocated memory was 161.5MB in the beginning and 612.4MB in the end (delta: 450.9MB). Free memory was 62.6MB in the beginning and 334.8MB in the end (delta: -272.2MB). Peak memory consumption was 309.2MB. Max. memory is 16.1GB. [2022-11-23 15:43:43,738 INFO L158 Benchmark]: Witness Printer took 66.83ms. Allocated memory is still 612.4MB. Free memory was 334.8MB in the beginning and 330.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:43:43,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 161.5MB. Free memory was 128.7MB in the beginning and 128.6MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.26ms. Allocated memory is still 161.5MB. Free memory was 125.9MB in the beginning and 112.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.35ms. Allocated memory is still 161.5MB. Free memory was 112.4MB in the beginning and 110.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.10ms. Allocated memory is still 161.5MB. Free memory was 110.3MB in the beginning and 108.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1161.20ms. Allocated memory is still 161.5MB. Free memory was 108.7MB in the beginning and 63.1MB in the end (delta: 45.6MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 259812.69ms. Allocated memory was 161.5MB in the beginning and 612.4MB in the end (delta: 450.9MB). Free memory was 62.6MB in the beginning and 334.8MB in the end (delta: -272.2MB). Peak memory consumption was 309.2MB. Max. memory is 16.1GB. * Witness Printer took 66.83ms. Allocated memory is still 612.4MB. Free memory was 334.8MB in the beginning and 330.6MB 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: 259.7s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 12.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 684 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 654 mSDsluCounter, 1693 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1457 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2233 IncrementalHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 236 mSDtfsCounter, 2233 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 925 GetRequests, 667 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3111 ImplicationChecksByTransitivity, 88.7s 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, 1367 HoareAnnotationTreeSize, 131 FomulaSimplifications, 14243 FormulaSimplificationTreeSizeReduction, 7.2s HoareSimplificationTime, 13 FomulaSimplificationsInter, 186648 FormulaSimplificationTreeSizeReductionInter, 5.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 578 NumberOfCodeBlocks, 572 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 846 ConstructedInterpolants, 0 QuantifiedInterpolants, 2143 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1069 ConjunctsInSsa, 136 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: 1.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 33, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 47, TOOLS_POST_TIME: 0.5s, TOOLS_POST_CALL_APPLICATIONS: 18, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 12, TOOLS_POST_RETURN_TIME: 0.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 77, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, 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 && unknown-#in~m-unknown == 1) && 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)) || !(unknown-#in~m-unknown == 0)) || !(\valid[2] == 1)) || !(unknown-#in~e-unknown == 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)) || !(unknown-#in~e-unknown == 0)) || !(unknown-#in~m-unknown == 1)))) || !(#NULL == 0)) && (((((!(0 <= 128 + unknown-#in~e-unknown) || !(#NULL == 0)) || (((0 <= 129 + e && (__retres4 % 4294967296 <= 0 || !(unknown-#in~m-unknown == 0))) && e <= 127) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(unknown-#in~e-unknown <= 127)) - 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: ((((((((((((((!(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)) || !(unknown-#in~m-unknown == 0)) || (((((m == unknown-#in~m-unknown && (128 + e <= 0 || ((e == unknown-#in~e-unknown && m % 4294967296 == 0) && m == unknown-#in~m-unknown))) && 0 < 129 + e) && (e == unknown-#in~e-unknown || \result % 4294967296 <= 0)) && __retres4 <= 0) && 0 <= __retres4)) || !(\valid[2] == 1)) || !(unknown-#in~e-unknown == 0)) && ((((((!(0 <= 128 + unknown-#in~e-unknown) || (((m == unknown-#in~m-unknown && (128 + e <= 0 || ((e == unknown-#in~e-unknown && m % 4294967296 == 0) && m == unknown-#in~m-unknown))) && 0 < 129 + e) && __retres4 == 0)) || !(#NULL == 0)) || !(#NULL == 0)) || ((0 <= 129 + e && e <= 127) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 + (4294967295 + -(\result % 4294967296)) / 4294967296 * 4294967296 < 1))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(unknown-#in~e-unknown <= 127)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((!(0 <= 128 + unknown-#in~e-unknown) || !(#NULL == 0)) || ((((m % 2 == 0 && 0 < 129 + e) && (__retres4 % 4294967296 <= 0 || !(unknown-#in~m-unknown == 0))) && e <= 126) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || ((e == unknown-#in~e-unknown && m == unknown-#in~m-unknown) && !(m % 4294967296 == 0))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(unknown-#in~e-unknown <= 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)) || !(unknown-#in~m-unknown == 0)) || !(\valid[2] == 1)) || !(unknown-#in~e-unknown == 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)) || !(unknown-#in~m-unknown == 0)) || !(\valid[2] == 1)) || !(unknown-#in~e-unknown == 0)) && (((((!(0 <= 128 + unknown-#in~e-unknown) || !(#NULL == 0)) || ((((unknown-#in~e-unknown <= e && (__retres4 % 4294967296 <= 0 || !(unknown-#in~m-unknown == 0))) && e <= 127) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 <= 0)) && !(unknown-#in~m-unknown == 1))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(unknown-#in~e-unknown <= 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! [2022-11-23 15:43:43,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f0e9aa-46b4-4fb2-a73e-93b88d7737ac/bin/utaipan-Q6hlc19bkW/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