./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh --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 64bit --witnessprinter.graph.data.programhash 0040318bb7d5d70cc95d7fb363d250bf2184336e92628a243777c547e7400e43 --- 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-2329fc7 [2022-12-14 07:22:00,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:22:00,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:22:00,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:22:00,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:22:00,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:22:00,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:22:00,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:22:00,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:22:00,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:22:00,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:22:00,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:22:00,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:22:00,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:22:00,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:22:00,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:22:00,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:22:00,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:22:00,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:22:00,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:22:00,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:22:00,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:22:00,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:22:00,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:22:00,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:22:00,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:22:00,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:22:00,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:22:00,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:22:00,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:22:00,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:22:00,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:22:00,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:22:00,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:22:00,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:22:00,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:22:00,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:22:00,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:22:00,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:22:00,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:22:00,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:22:00,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 07:22:00,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:22:00,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:22:00,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:22:00,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:22:00,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:22:00,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:22:00,314 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:22:00,314 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:22:00,325 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:22:00,325 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:22:00,326 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:22:00,326 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:22:00,326 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:22:00,326 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:22:00,326 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:22:00,326 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:22:00,327 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:22:00,327 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:22:00,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:22:00,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:22:00,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:22:00,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:22:00,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:22:00,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:22:00,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:22:00,329 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:22:00,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:22:00,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:22:00,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:22:00,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:22:00,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:22:00,330 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:22:00,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:22:00,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:22:00,331 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:22:00,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:22:00,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:22:00,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:22:00,332 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_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0040318bb7d5d70cc95d7fb363d250bf2184336e92628a243777c547e7400e43 [2022-12-14 07:22:00,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:22:00,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:22:00,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:22:00,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:22:00,532 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:22:00,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2022-12-14 07:22:03,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:22:03,198 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:22:03,199 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2022-12-14 07:22:03,203 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/data/bb8453699/ee02f115942a44c0b82b84142a29602b/FLAGe3a918f01 [2022-12-14 07:22:03,213 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/data/bb8453699/ee02f115942a44c0b82b84142a29602b [2022-12-14 07:22:03,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:22:03,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:22:03,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:22:03,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:22:03,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:22:03,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616748df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03, skipping insertion in model container [2022-12-14 07:22:03,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:22:03,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:22:03,347 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_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1117,1130] [2022-12-14 07:22:03,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:22:03,372 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:22:03,380 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_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1117,1130] [2022-12-14 07:22:03,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:22:03,399 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:22:03,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03 WrapperNode [2022-12-14 07:22:03,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:22:03,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:22:03,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:22:03,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:22:03,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,428 INFO L138 Inliner]: procedures = 11, calls = 4, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2022-12-14 07:22:03,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:22:03,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:22:03,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:22:03,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:22:03,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,448 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:22:03,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:22:03,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:22:03,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:22:03,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (1/1) ... [2022-12-14 07:22:03,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:22:03,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:03,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:22:03,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:22:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:22:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:22:03,575 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:22:03,576 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:22:03,696 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:22:03,724 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:22:03,724 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:22:03,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:03 BoogieIcfgContainer [2022-12-14 07:22:03,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:22:03,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:22:03,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:22:03,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:22:03,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:22:03" (1/3) ... [2022-12-14 07:22:03,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f20547e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:22:03, skipping insertion in model container [2022-12-14 07:22:03,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:03" (2/3) ... [2022-12-14 07:22:03,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f20547e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:22:03, skipping insertion in model container [2022-12-14 07:22:03,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:03" (3/3) ... [2022-12-14 07:22:03,732 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2c.c [2022-12-14 07:22:03,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:22:03,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:22:03,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:22:03,783 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;@19b89f9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:22:03,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:22:03,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:22:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 07:22:03,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:03,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 07:22:03,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2065831, now seen corresponding path program 1 times [2022-12-14 07:22:03,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:03,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879607992] [2022-12-14 07:22:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:03,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:04,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:04,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879607992] [2022-12-14 07:22:04,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879607992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:04,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:04,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:22:04,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406924300] [2022-12-14 07:22:04,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:04,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:22:04,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:22:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:22:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:22:04,353 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 07:22:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:04,407 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-12-14 07:22:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:22:04,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 07:22:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:04,416 INFO L225 Difference]: With dead ends: 15 [2022-12-14 07:22:04,417 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 07:22:04,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:22:04,422 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:04,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:22:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 07:22:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-12-14 07:22:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:22:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-12-14 07:22:04,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-12-14 07:22:04,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:04,453 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-12-14 07:22:04,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 07:22:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-12-14 07:22:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:22:04,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:04,454 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-14 07:22:04,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:22:04,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:04,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:04,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1418435780, now seen corresponding path program 1 times [2022-12-14 07:22:04,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:04,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244212164] [2022-12-14 07:22:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:22:04,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:22:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:22:04,665 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:22:04,665 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:22:04,667 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 07:22:04,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:22:04,671 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 07:22:04,674 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:22:04,690 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:22:04,691 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:22:04,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:22:04 BoogieIcfgContainer [2022-12-14 07:22:04,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:22:04,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:22:04,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:22:04,699 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:22:04,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:03" (3/4) ... [2022-12-14 07:22:04,702 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 07:22:04,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:22:04,702 INFO L158 Benchmark]: Toolchain (without parser) took 1485.33ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 105.9MB in the beginning and 81.8MB in the end (delta: 24.1MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. [2022-12-14 07:22:04,703 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 107.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:22:04,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.39ms. Allocated memory is still 138.4MB. Free memory was 105.9MB in the beginning and 95.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 07:22:04,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.50ms. Allocated memory is still 138.4MB. Free memory was 95.0MB in the beginning and 92.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:22:04,704 INFO L158 Benchmark]: Boogie Preprocessor took 21.48ms. Allocated memory is still 138.4MB. Free memory was 92.9MB in the beginning and 91.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:22:04,705 INFO L158 Benchmark]: RCFGBuilder took 274.66ms. Allocated memory is still 138.4MB. Free memory was 91.7MB in the beginning and 76.6MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 07:22:04,705 INFO L158 Benchmark]: TraceAbstraction took 970.83ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 75.7MB in the beginning and 81.8MB in the end (delta: -6.1MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2022-12-14 07:22:04,706 INFO L158 Benchmark]: Witness Printer took 2.93ms. Allocated memory is still 184.5MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:22:04,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 107.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.39ms. Allocated memory is still 138.4MB. Free memory was 105.9MB in the beginning and 95.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.50ms. Allocated memory is still 138.4MB. Free memory was 95.0MB in the beginning and 92.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.48ms. Allocated memory is still 138.4MB. Free memory was 92.9MB in the beginning and 91.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 274.66ms. Allocated memory is still 138.4MB. Free memory was 91.7MB in the beginning and 76.6MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 970.83ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 75.7MB in the beginning and 81.8MB in the end (delta: -6.1MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. * Witness Printer took 2.93ms. Allocated memory is still 184.5MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 55, overapproximation of bitwiseAnd at line 49. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 2); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (2 - 1); [L32] const SORT_2 var_5 = 0; [L33] const SORT_2 var_10 = 1; [L34] const SORT_2 var_17 = mask_SORT_2; [L36] SORT_1 input_3; [L37] SORT_1 input_4; [L39] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L40] SORT_2 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L42] SORT_2 init_8_arg_1 = var_5; [L43] state_6 = init_8_arg_1 [L44] SORT_2 init_9_arg_1 = var_5; [L45] state_7 = init_9_arg_1 VAL [init_8_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=6, input_4=5, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=3, var_13_arg_0=6, var_13_arg_1=1, var_13_arg_2=0, var_14=3, var_14_arg_0=5, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=6, var_22_arg_1=5, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 07:22:04,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh --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 64bit --witnessprinter.graph.data.programhash 0040318bb7d5d70cc95d7fb363d250bf2184336e92628a243777c547e7400e43 --- 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-2329fc7 [2022-12-14 07:22:06,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:22:06,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:22:06,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:22:06,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:22:06,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:22:06,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:22:06,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:22:06,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:22:06,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:22:06,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:22:06,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:22:06,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:22:06,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:22:06,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:22:06,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:22:06,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:22:06,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:22:06,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:22:06,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:22:06,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:22:06,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:22:06,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:22:06,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:22:06,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:22:06,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:22:06,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:22:06,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:22:06,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:22:06,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:22:06,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:22:06,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:22:06,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:22:06,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:22:06,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:22:06,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:22:06,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:22:06,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:22:06,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:22:06,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:22:06,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:22:06,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 07:22:06,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:22:06,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:22:06,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:22:06,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:22:06,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:22:06,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:22:06,458 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:22:06,459 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:22:06,459 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:22:06,459 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:22:06,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:22:06,459 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:22:06,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:22:06,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:22:06,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:22:06,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:22:06,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:22:06,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:22:06,461 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 07:22:06,461 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 07:22:06,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:22:06,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:22:06,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:22:06,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:22:06,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 07:22:06,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:22:06,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:22:06,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:22:06,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:22:06,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:22:06,464 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 07:22:06,464 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 07:22:06,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:22:06,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:22:06,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 07:22:06,465 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0040318bb7d5d70cc95d7fb363d250bf2184336e92628a243777c547e7400e43 [2022-12-14 07:22:06,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:22:06,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:22:06,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:22:06,702 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:22:06,703 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:22:06,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2022-12-14 07:22:09,330 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:22:09,500 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:22:09,500 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2022-12-14 07:22:09,506 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/data/b321f0880/9d8ee0440e3d47d7910d8191d72c3291/FLAG96757bcfb [2022-12-14 07:22:09,517 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/data/b321f0880/9d8ee0440e3d47d7910d8191d72c3291 [2022-12-14 07:22:09,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:22:09,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:22:09,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:22:09,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:22:09,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:22:09,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7066ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09, skipping insertion in model container [2022-12-14 07:22:09,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:22:09,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:22:09,650 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_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1117,1130] [2022-12-14 07:22:09,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:22:09,689 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:22:09,698 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_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount2c.c[1117,1130] [2022-12-14 07:22:09,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:22:09,727 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:22:09,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09 WrapperNode [2022-12-14 07:22:09,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:22:09,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:22:09,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:22:09,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:22:09,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,756 INFO L138 Inliner]: procedures = 11, calls = 4, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2022-12-14 07:22:09,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:22:09,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:22:09,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:22:09,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:22:09,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,777 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:22:09,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:22:09,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:22:09,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:22:09,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (1/1) ... [2022-12-14 07:22:09,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:22:09,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:09,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:22:09,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:22:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:22:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:22:09,909 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:22:09,911 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:22:10,052 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:22:10,058 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:22:10,058 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:22:10,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:10 BoogieIcfgContainer [2022-12-14 07:22:10,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:22:10,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:22:10,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:22:10,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:22:10,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:22:09" (1/3) ... [2022-12-14 07:22:10,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3265a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:22:10, skipping insertion in model container [2022-12-14 07:22:10,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:09" (2/3) ... [2022-12-14 07:22:10,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3265a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:22:10, skipping insertion in model container [2022-12-14 07:22:10,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:10" (3/3) ... [2022-12-14 07:22:10,067 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2c.c [2022-12-14 07:22:10,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:22:10,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:22:10,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:22:10,125 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;@ddc0969, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:22:10,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:22:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-12-14 07:22:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:22:10,134 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:10,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:10,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:10,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1809708109, now seen corresponding path program 1 times [2022-12-14 07:22:10,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:22:10,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679139490] [2022-12-14 07:22:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:10,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:22:10,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:22:10,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:22:10,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 07:22:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:10,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 07:22:10,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:10,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:22:10,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:22:10,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679139490] [2022-12-14 07:22:10,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679139490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:10,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:10,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:22:10,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747671078] [2022-12-14 07:22:10,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:10,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:22:10,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:22:10,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:22:10,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:22:10,282 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-12-14 07:22:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:10,294 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2022-12-14 07:22:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:22:10,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 07:22:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:10,305 INFO L225 Difference]: With dead ends: 20 [2022-12-14 07:22:10,305 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 07:22:10,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:22:10,312 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:10,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:22:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 07:22:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-14 07:22:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:22:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 07:22:10,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-12-14 07:22:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:10,341 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 07:22:10,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-12-14 07:22:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 07:22:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:22:10,342 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:10,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:10,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:22:10,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:22:10,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:10,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:10,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1809767691, now seen corresponding path program 1 times [2022-12-14 07:22:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:22:10,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904385024] [2022-12-14 07:22:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:10,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:22:10,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:22:10,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:22:10,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 07:22:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:10,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 07:22:10,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:10,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:22:10,693 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:22:10,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904385024] [2022-12-14 07:22:10,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904385024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:10,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:10,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:22:10,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152325536] [2022-12-14 07:22:10,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:22:10,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:22:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:22:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:22:10,696 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-12-14 07:22:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:10,732 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-12-14 07:22:10,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:22:10,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 07:22:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:10,733 INFO L225 Difference]: With dead ends: 19 [2022-12-14 07:22:10,733 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 07:22:10,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:22:10,734 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:10,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:22:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 07:22:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2022-12-14 07:22:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:22:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-12-14 07:22:10,738 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2022-12-14 07:22:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:10,738 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-12-14 07:22:10,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-12-14 07:22:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-12-14 07:22:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:22:10,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:10,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:10,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 07:22:10,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:22:10,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:10,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1841040349, now seen corresponding path program 1 times [2022-12-14 07:22:10,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:22:10,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037581271] [2022-12-14 07:22:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:10,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:22:10,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:22:10,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:22:10,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 07:22:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:11,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 07:22:11,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:11,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:22:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:11,545 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:22:11,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037581271] [2022-12-14 07:22:11,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037581271] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:22:11,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1977809003] [2022-12-14 07:22:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:11,546 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:22:11,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:22:11,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:22:11,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-12-14 07:22:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:11,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 07:22:11,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:11,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:22:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:11,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1977809003] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:22:11,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713133564] [2022-12-14 07:22:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:11,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:22:11,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:11,950 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:22:11,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 07:22:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:11,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 07:22:11,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:12,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:22:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:12,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713133564] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:22:12,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:22:12,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2022-12-14 07:22:12,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685151618] [2022-12-14 07:22:12,294 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:22:12,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 07:22:12,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:22:12,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 07:22:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-14 07:22:12,295 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) [2022-12-14 07:22:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:12,538 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-12-14 07:22:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:22:12,539 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 07:22:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:12,540 INFO L225 Difference]: With dead ends: 29 [2022-12-14 07:22:12,540 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 07:22:12,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-14 07:22:12,541 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:12,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 44 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:22:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 07:22:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-12-14 07:22:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 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) [2022-12-14 07:22:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-12-14 07:22:12,545 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 12 [2022-12-14 07:22:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:12,545 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-12-14 07:22:12,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) [2022-12-14 07:22:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-12-14 07:22:12,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 07:22:12,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:12,546 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1] [2022-12-14 07:22:12,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 07:22:12,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 07:22:12,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-12-14 07:22:13,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 07:22:13,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:13,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1190222557, now seen corresponding path program 2 times [2022-12-14 07:22:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:22:13,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773239362] [2022-12-14 07:22:13,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:22:13,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:22:13,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:22:13,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:22:13,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 07:22:13,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 07:22:13,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:22:13,219 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 91 conjunts are in the unsatisfiable core [2022-12-14 07:22:13,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:14,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:22:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:19,146 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:22:19,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773239362] [2022-12-14 07:22:19,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773239362] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:22:19,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1847350966] [2022-12-14 07:22:19,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:22:19,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:22:19,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:22:19,147 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:22:19,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-12-14 07:22:19,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 07:22:19,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:22:19,256 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 91 conjunts are in the unsatisfiable core [2022-12-14 07:22:19,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:20,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:22:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:22,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1847350966] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:22:22,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057211646] [2022-12-14 07:22:22,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:22:22,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:22:22,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:22,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:22:22,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 07:22:22,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 07:22:22,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:22:22,643 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 94 conjunts are in the unsatisfiable core [2022-12-14 07:22:22,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:24,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:22:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:28,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057211646] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:22:28,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:22:28,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 14, 14] total 42 [2022-12-14 07:22:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256567436] [2022-12-14 07:22:28,809 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:22:28,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-14 07:22:28,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:22:28,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-14 07:22:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1393, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 07:22:28,811 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 42 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 42 states have internal predecessors, (74), 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) [2022-12-14 07:22:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:30,262 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-12-14 07:22:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 07:22:30,262 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 42 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-14 07:22:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:30,262 INFO L225 Difference]: With dead ends: 34 [2022-12-14 07:22:30,262 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 07:22:30,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 76 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=538, Invalid=1912, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 07:22:30,264 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:30,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 61 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:22:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 07:22:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-12-14 07:22:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 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) [2022-12-14 07:22:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-12-14 07:22:30,268 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2022-12-14 07:22:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:30,269 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-12-14 07:22:30,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 42 states have internal predecessors, (74), 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) [2022-12-14 07:22:30,269 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-12-14 07:22:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 07:22:30,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:30,269 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-12-14 07:22:30,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 07:22:30,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 07:22:30,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-12-14 07:22:30,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 07:22:30,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1666876661, now seen corresponding path program 3 times [2022-12-14 07:22:30,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:22:30,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949593044] [2022-12-14 07:22:30,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:22:30,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:22:30,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:22:30,879 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:22:30,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 07:22:30,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 07:22:30,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:22:30,949 WARN L261 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 143 conjunts are in the unsatisfiable core [2022-12-14 07:22:30,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:22:35,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:23:08,785 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 704 DAG size of output: 652 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:23:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:23:32,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:23:32,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949593044] [2022-12-14 07:23:32,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949593044] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:23:32,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1533139388] [2022-12-14 07:23:32,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:23:32,805 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:23:32,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:23:32,806 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:23:32,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-14 07:23:32,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 07:23:32,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:23:32,928 WARN L261 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 143 conjunts are in the unsatisfiable core [2022-12-14 07:23:32,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:23:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:23:35,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:24:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:24:09,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1533139388] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:24:09,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809725132] [2022-12-14 07:24:09,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:24:09,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:24:09,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:24:09,471 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:24:09,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 07:24:09,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 07:24:09,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:24:09,552 WARN L261 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 136 conjunts are in the unsatisfiable core [2022-12-14 07:24:09,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:24:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:24:12,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:24:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:24:54,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809725132] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:24:54,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:24:54,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17, 18, 17, 17] total 45 [2022-12-14 07:24:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912906880] [2022-12-14 07:24:54,341 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:24:54,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-14 07:24:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:24:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-14 07:24:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 07:24:54,344 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 45 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 45 states have internal predecessors, (73), 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) [2022-12-14 07:24:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:24:56,496 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2022-12-14 07:24:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 07:24:56,496 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 45 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 07:24:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:24:56,497 INFO L225 Difference]: With dead ends: 44 [2022-12-14 07:24:56,497 INFO L226 Difference]: Without dead ends: 42 [2022-12-14 07:24:56,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 91 SyntacticMatches, 22 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2041 ImplicationChecksByTransitivity, 54.3s TimeCoverageRelationStatistics Valid=844, Invalid=2236, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 07:24:56,498 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 83 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:24:56,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 55 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 07:24:56,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-14 07:24:56,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-12-14 07:24:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 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) [2022-12-14 07:24:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-12-14 07:24:56,504 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 27 [2022-12-14 07:24:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:24:56,505 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-12-14 07:24:56,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 45 states have internal predecessors, (73), 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) [2022-12-14 07:24:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-12-14 07:24:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 07:24:56,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:24:56,505 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2022-12-14 07:24:56,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-12-14 07:24:56,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 07:24:56,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-12-14 07:24:57,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 07:24:57,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:24:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:24:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1560106485, now seen corresponding path program 4 times [2022-12-14 07:24:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:24:57,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818424614] [2022-12-14 07:24:57,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:24:57,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:24:57,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:24:57,115 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:24:57,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 07:24:57,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:24:57,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-12-14 07:24:57,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:24:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:24:57,314 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 07:24:57,314 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:24:57,315 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 07:24:57,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 07:24:57,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:24:57,520 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-12-14 07:24:57,523 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:24:57,545 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,545 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,545 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,545 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,546 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,546 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,546 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:24:57 BoogieIcfgContainer [2022-12-14 07:24:57,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:24:57,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:24:57,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:24:57,556 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:24:57,556 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:10" (3/4) ... [2022-12-14 07:24:57,557 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 07:24:57,566 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,566 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,566 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,566 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,566 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,566 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,566 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 07:24:57,604 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:24:57,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:24:57,605 INFO L158 Benchmark]: Toolchain (without parser) took 168084.59ms. Allocated memory was 69.2MB in the beginning and 299.9MB in the end (delta: 230.7MB). Free memory was 48.1MB in the beginning and 253.4MB in the end (delta: -205.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 07:24:57,605 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 69.2MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:24:57,605 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.86ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 36.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:24:57,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.23ms. Allocated memory is still 69.2MB. Free memory was 36.5MB in the beginning and 34.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:24:57,605 INFO L158 Benchmark]: Boogie Preprocessor took 22.94ms. Allocated memory is still 69.2MB. Free memory was 34.9MB in the beginning and 33.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:24:57,606 INFO L158 Benchmark]: RCFGBuilder took 278.71ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 33.6MB in the beginning and 72.3MB in the end (delta: -38.7MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2022-12-14 07:24:57,606 INFO L158 Benchmark]: TraceAbstraction took 167493.98ms. Allocated memory was 96.5MB in the beginning and 299.9MB in the end (delta: 203.4MB). Free memory was 71.4MB in the beginning and 261.8MB in the end (delta: -190.4MB). Peak memory consumption was 184.7MB. Max. memory is 16.1GB. [2022-12-14 07:24:57,606 INFO L158 Benchmark]: Witness Printer took 48.74ms. Allocated memory is still 299.9MB. Free memory was 261.8MB in the beginning and 253.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 07:24:57,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 69.2MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.86ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 36.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.23ms. Allocated memory is still 69.2MB. Free memory was 36.5MB in the beginning and 34.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.94ms. Allocated memory is still 69.2MB. Free memory was 34.9MB in the beginning and 33.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 278.71ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 33.6MB in the beginning and 72.3MB in the end (delta: -38.7MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 167493.98ms. Allocated memory was 96.5MB in the beginning and 299.9MB in the end (delta: 203.4MB). Free memory was 71.4MB in the beginning and 261.8MB in the end (delta: -190.4MB). Peak memory consumption was 184.7MB. Max. memory is 16.1GB. * Witness Printer took 48.74ms. Allocated memory is still 299.9MB. Free memory was 261.8MB in the beginning and 253.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 2); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (2 - 1); [L32] const SORT_2 var_5 = 0; [L33] const SORT_2 var_10 = 1; [L34] const SORT_2 var_17 = mask_SORT_2; [L36] SORT_1 input_3; [L37] SORT_1 input_4; [L39] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L40] SORT_2 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L42] SORT_2 init_8_arg_1 = var_5; [L43] state_6 = init_8_arg_1 [L44] SORT_2 init_9_arg_1 = var_5; [L45] state_7 = init_9_arg_1 VAL [init_8_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, state_6=0, state_7=0, var_10=1, var_17=3, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=0, next_16_arg_1=1, state_6=0, state_7=1, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=1, var_13=0, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=0, var_14=1, var_14_arg_0=1, var_14_arg_1=1, var_14_arg_2=0, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=1, next_16_arg_1=1, state_6=1, state_7=1, var_10=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=2, var_12_arg_0=1, var_12_arg_1=1, var_13=1, var_13_arg_0=1, var_13_arg_1=1, var_13_arg_2=0, var_14=1, var_14_arg_0=0, var_14_arg_1=2, var_14_arg_2=1, var_17=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=0, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=2, next_16_arg_1=1, state_6=2, state_7=1, var_10=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=1, var_12_arg_1=1, var_13=2, var_13_arg_0=1, var_13_arg_1=2, var_13_arg_2=1, var_14=1, var_14_arg_0=0, var_14_arg_1=2, var_14_arg_2=1, var_17=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=0, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=2, next_16_arg_1=2, state_6=2, state_7=2, var_10=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=2, var_12_arg_0=1, var_12_arg_1=1, var_13=2, var_13_arg_0=0, var_13_arg_1=3, var_13_arg_2=2, var_14=2, var_14_arg_0=1, var_14_arg_1=2, var_14_arg_2=1, var_17=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=2, state_6=3, state_7=2, var_10=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=2, var_12_arg_1=1, var_13=3, var_13_arg_0=1, var_13_arg_1=3, var_13_arg_2=2, var_14=2, var_14_arg_0=0, var_14_arg_1=3, var_14_arg_2=2, var_17=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=2, var_19_arg_1=3, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_22=1, var_22_arg_0=1, var_22_arg_1=0, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L71] RET __VERIFIER_assert(!(bad_21_arg_0)) [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_10; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = input_3; [L77] SORT_2 var_13_arg_1 = var_11; [L78] SORT_2 var_13_arg_2 = state_6; [L79] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L80] var_13 = var_13 & mask_SORT_2 [L81] SORT_2 next_15_arg_1 = var_13; [L82] SORT_2 var_12_arg_0 = state_7; [L83] SORT_2 var_12_arg_1 = var_10; [L84] SORT_2 var_12 = var_12_arg_0 + var_12_arg_1; [L85] SORT_1 var_14_arg_0 = input_4; [L86] SORT_2 var_14_arg_1 = var_12; [L87] SORT_2 var_14_arg_2 = state_7; [L88] SORT_2 var_14 = var_14_arg_0 ? var_14_arg_1 : var_14_arg_2; [L89] var_14 = var_14 & mask_SORT_2 [L90] SORT_2 next_16_arg_1 = var_14; [L92] state_6 = next_15_arg_1 [L93] state_7 = next_16_arg_1 VAL [bad_21_arg_0=0, constr_23_arg_0=1, init_8_arg_1=0, init_9_arg_1=0, input_3=0, input_4=1, mask_SORT_1=1, mask_SORT_2=3, msb_SORT_1=1, msb_SORT_2=2, next_15_arg_1=3, next_16_arg_1=3, state_6=3, state_7=3, var_10=1, var_11=4, var_11_arg_0=3, var_11_arg_1=1, var_12=3, var_12_arg_0=2, var_12_arg_1=1, var_13=3, var_13_arg_0=0, var_13_arg_1=4, var_13_arg_2=3, var_14=3, var_14_arg_0=1, var_14_arg_1=3, var_14_arg_2=2, var_17=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=2, var_19_arg_1=3, var_20=0, var_20_arg_0=1, var_20_arg_1=0, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_5=0] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L50] input_4 = __VERIFIER_nondet_uchar() [L51] input_4 = input_4 & mask_SORT_1 [L53] SORT_1 var_22_arg_0 = input_3; [L54] SORT_1 var_22_arg_1 = input_4; [L55] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L56] var_22 = var_22 & mask_SORT_1 [L57] SORT_1 constr_23_arg_0 = var_22; [L58] CALL assume_abort_if_not(constr_23_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L58] RET assume_abort_if_not(constr_23_arg_0) [L60] SORT_2 var_18_arg_0 = state_6; [L61] SORT_2 var_18_arg_1 = var_17; [L62] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L63] SORT_2 var_19_arg_0 = state_7; [L64] SORT_2 var_19_arg_1 = var_17; [L65] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L66] SORT_1 var_20_arg_0 = var_18; [L67] SORT_1 var_20_arg_1 = var_19; [L68] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L69] var_20 = var_20 & mask_SORT_1 [L70] SORT_1 bad_21_arg_0 = var_20; [L71] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 167.4s, OverallIterations: 6, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 181 mSDsluCounter, 187 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 156 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 325 IncrementalHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 31 mSDtfsCounter, 325 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 230 SyntacticMatches, 33 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3389 ImplicationChecksByTransitivity, 62.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=5, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 159.8s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 360 ConstructedInterpolants, 210 QuantifiedInterpolants, 201776 SizeOfPredicates, 758 NumberOfNonLiveVariables, 1367 ConjunctsInSsa, 789 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 0/462 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 07:24:57,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d2c6e7-aa68-4e09-a5a3-c6d1feab6cc6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE