./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 bcc688e871550efe2d61602f992013dded29799daf8ee65d6b52a75f7c1ba325 --- 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 12:38:45,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:38:45,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:38:45,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:38:45,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:38:45,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:38:45,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:38:45,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:38:45,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:38:45,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:38:45,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:38:45,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:38:45,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:38:45,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:38:45,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:38:45,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:38:45,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:38:45,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:38:45,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:38:45,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:38:45,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:38:45,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:38:45,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:38:45,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:38:45,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:38:45,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:38:45,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:38:45,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:38:45,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:38:45,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:38:45,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:38:45,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:38:45,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:38:45,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:38:45,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:38:45,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:38:45,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:38:45,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:38:45,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:38:45,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:38:45,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:38:45,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 12:38:45,321 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:38:45,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:38:45,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:38:45,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:38:45,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:38:45,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:38:45,323 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:38:45,323 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:38:45,323 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:38:45,323 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:38:45,323 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:38:45,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:38:45,324 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:38:45,324 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:38:45,324 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:38:45,324 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:38:45,324 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:38:45,325 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:38:45,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:38:45,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:38:45,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:38:45,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:38:45,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:38:45,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:38:45,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:38:45,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:38:45,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:38:45,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:38:45,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:38:45,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:38:45,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:38:45,327 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:38:45,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:38:45,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:38:45,327 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:38:45,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:38:45,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:38:45,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:38:45,328 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_067d3c40-84d2-4368-93a9-52b1c9f0588d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcc688e871550efe2d61602f992013dded29799daf8ee65d6b52a75f7c1ba325 [2022-12-14 12:38:45,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:38:45,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:38:45,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:38:45,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:38:45,553 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:38:45,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c [2022-12-14 12:38:48,157 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:38:48,363 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:38:48,363 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c [2022-12-14 12:38:48,374 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/data/7c93031a2/fd5943c3a65f47f080c6a17148d9cc44/FLAGab6d4078d [2022-12-14 12:38:48,386 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/data/7c93031a2/fd5943c3a65f47f080c6a17148d9cc44 [2022-12-14 12:38:48,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:38:48,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:38:48,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:38:48,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:38:48,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:38:48,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:48,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc6b638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48, skipping insertion in model container [2022-12-14 12:38:48,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:48,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:38:48,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:38:48,587 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_067d3c40-84d2-4368-93a9-52b1c9f0588d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c[1014,1027] [2022-12-14 12:38:48,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:38:48,831 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:38:48,842 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_067d3c40-84d2-4368-93a9-52b1c9f0588d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c[1014,1027] [2022-12-14 12:38:48,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:38:48,941 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:38:48,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48 WrapperNode [2022-12-14 12:38:48,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:38:48,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:38:48,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:38:48,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:38:48,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:48,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,077 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1386 [2022-12-14 12:38:49,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:38:49,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:38:49,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:38:49,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:38:49,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:38:49,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:38:49,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:38:49,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:38:49,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (1/1) ... [2022-12-14 12:38:49,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:38:49,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:38:49,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:38:49,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:38:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:38:49,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:38:49,446 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:38:49,448 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:40:42,078 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:40:42,102 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:40:42,102 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:40:42,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:40:42 BoogieIcfgContainer [2022-12-14 12:40:42,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:40:42,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:40:42,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:40:42,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:40:42,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:38:48" (1/3) ... [2022-12-14 12:40:42,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a1e363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:40:42, skipping insertion in model container [2022-12-14 12:40:42,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:38:48" (2/3) ... [2022-12-14 12:40:42,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a1e363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:40:42, skipping insertion in model container [2022-12-14 12:40:42,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:40:42" (3/3) ... [2022-12-14 12:40:42,112 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.3.prop1-func-interl.c [2022-12-14 12:40:42,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:40:42,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:40:42,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:40:42,182 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;@7cbc9b69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:40:42,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:40:42,186 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 12:40:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 12:40:42,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:40:42,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 12:40:42,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:40:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:40:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 12:40:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:40:42,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369174287] [2022-12-14 12:40:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:40:42,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:40:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:40:42,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:40:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:40:42,532 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:40:42,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:40:42,535 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 12:40:42,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:40:42,541 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 12:40:42,545 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:40:42,564 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 12:40:42,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:40:42 BoogieIcfgContainer [2022-12-14 12:40:42,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:40:42,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:40:42,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:40:42,574 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:40:42,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:40:42" (3/4) ... [2022-12-14 12:40:42,577 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 12:40:42,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:40:42,579 INFO L158 Benchmark]: Toolchain (without parser) took 114188.33ms. Allocated memory was 161.5MB in the beginning and 700.4MB in the end (delta: 539.0MB). Free memory was 119.6MB in the beginning and 400.1MB in the end (delta: -280.5MB). Peak memory consumption was 261.3MB. Max. memory is 16.1GB. [2022-12-14 12:40:42,579 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 161.5MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 106.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:40:42,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.82ms. Allocated memory is still 161.5MB. Free memory was 119.3MB in the beginning and 72.5MB in the end (delta: 46.8MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-12-14 12:40:42,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 134.67ms. Allocated memory is still 161.5MB. Free memory was 72.5MB in the beginning and 117.0MB in the end (delta: -44.5MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2022-12-14 12:40:42,581 INFO L158 Benchmark]: Boogie Preprocessor took 95.74ms. Allocated memory is still 161.5MB. Free memory was 117.0MB in the beginning and 108.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 12:40:42,581 INFO L158 Benchmark]: RCFGBuilder took 112930.59ms. Allocated memory was 161.5MB in the beginning and 700.4MB in the end (delta: 539.0MB). Free memory was 108.5MB in the beginning and 442.0MB in the end (delta: -333.5MB). Peak memory consumption was 421.4MB. Max. memory is 16.1GB. [2022-12-14 12:40:42,582 INFO L158 Benchmark]: TraceAbstraction took 466.23ms. Allocated memory is still 700.4MB. Free memory was 442.0MB in the beginning and 400.1MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-12-14 12:40:42,582 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 700.4MB. Free memory was 400.1MB in the beginning and 400.1MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:40:42,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 161.5MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 106.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.82ms. Allocated memory is still 161.5MB. Free memory was 119.3MB in the beginning and 72.5MB in the end (delta: 46.8MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 134.67ms. Allocated memory is still 161.5MB. Free memory was 72.5MB in the beginning and 117.0MB in the end (delta: -44.5MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.74ms. Allocated memory is still 161.5MB. Free memory was 117.0MB in the beginning and 108.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 112930.59ms. Allocated memory was 161.5MB in the beginning and 700.4MB in the end (delta: 539.0MB). Free memory was 108.5MB in the beginning and 442.0MB in the end (delta: -333.5MB). Peak memory consumption was 421.4MB. Max. memory is 16.1GB. * TraceAbstraction took 466.23ms. Allocated memory is still 700.4MB. Free memory was 442.0MB in the beginning and 400.1MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 700.4MB. Free memory was 400.1MB in the beginning and 400.1MB in the end (delta: 2.6kB). 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: 20]: 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 190, overapproximation of bitwiseAnd at line 146. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_20 = 0; [L39] const SORT_4 var_53 = 1; [L40] const SORT_4 var_54 = 0; [L41] const SORT_2 var_63 = 1; [L42] const SORT_3 var_65 = 0; [L43] const SORT_4 var_68 = 3; [L44] const SORT_2 var_78 = 0; [L45] const SORT_4 var_131 = 2; [L46] const SORT_2 var_242 = 2; [L48] SORT_1 input_64; [L49] SORT_1 input_72; [L50] SORT_1 input_79; [L51] SORT_1 input_85; [L52] SORT_1 input_91; [L53] SORT_1 input_97; [L54] SORT_1 input_151; [L55] SORT_1 input_155; [L56] SORT_1 input_158; [L57] SORT_1 input_159; [L58] SORT_1 input_160; [L59] SORT_1 input_161; [L60] SORT_1 input_169; [L61] SORT_1 input_175; [L62] SORT_1 input_181; [L63] SORT_1 input_196; [L64] SORT_1 input_214; [L65] SORT_1 input_232; [L67] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_2 init_7_arg_1 = var_5; [L92] state_6 = init_7_arg_1 [L93] SORT_2 init_9_arg_1 = var_5; [L94] state_8 = init_9_arg_1 [L95] SORT_2 init_11_arg_1 = var_5; [L96] state_10 = init_11_arg_1 [L97] SORT_2 init_13_arg_1 = var_5; [L98] state_12 = init_13_arg_1 [L99] SORT_2 init_15_arg_1 = var_5; [L100] state_14 = init_15_arg_1 [L101] SORT_2 init_17_arg_1 = var_5; [L102] state_16 = init_17_arg_1 [L103] SORT_2 init_19_arg_1 = var_5; [L104] state_18 = init_19_arg_1 [L105] SORT_1 init_22_arg_1 = var_20; [L106] state_21 = init_22_arg_1 [L107] SORT_1 init_24_arg_1 = var_20; [L108] state_23 = init_24_arg_1 [L109] SORT_1 init_26_arg_1 = var_20; [L110] state_25 = init_26_arg_1 [L111] SORT_1 init_28_arg_1 = var_20; [L112] state_27 = init_28_arg_1 [L113] SORT_1 init_30_arg_1 = var_20; [L114] state_29 = init_30_arg_1 [L115] SORT_1 init_32_arg_1 = var_20; [L116] state_31 = init_32_arg_1 [L117] SORT_1 init_34_arg_1 = var_20; [L118] state_33 = init_34_arg_1 [L119] SORT_1 init_36_arg_1 = var_20; [L120] state_35 = init_36_arg_1 [L121] SORT_1 init_38_arg_1 = var_20; [L122] state_37 = init_38_arg_1 [L123] SORT_1 init_40_arg_1 = var_20; [L124] state_39 = init_40_arg_1 [L125] SORT_1 init_42_arg_1 = var_20; [L126] state_41 = init_42_arg_1 [L127] SORT_1 init_44_arg_1 = var_20; [L128] state_43 = init_44_arg_1 [L129] SORT_1 init_46_arg_1 = var_20; [L130] state_45 = init_46_arg_1 [L131] SORT_1 init_48_arg_1 = var_20; [L132] state_47 = init_48_arg_1 [L133] SORT_1 init_50_arg_1 = var_20; [L134] state_49 = init_50_arg_1 [L135] SORT_1 init_52_arg_1 = var_20; [L136] state_51 = init_52_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_6=0, state_8=0, var_131=2, var_20=0, var_242=2, var_5=0, var_53=1, var_54=0, var_63=1, var_65=0, var_68=3, var_78=0] [L139] input_64 = __VERIFIER_nondet_uchar() [L140] input_72 = __VERIFIER_nondet_uchar() [L141] input_79 = __VERIFIER_nondet_uchar() [L142] input_85 = __VERIFIER_nondet_uchar() [L143] input_91 = __VERIFIER_nondet_uchar() [L144] input_97 = __VERIFIER_nondet_uchar() [L145] input_151 = __VERIFIER_nondet_uchar() [L146] input_151 = input_151 & mask_SORT_1 [L147] input_155 = __VERIFIER_nondet_uchar() [L148] input_155 = input_155 & mask_SORT_1 [L149] input_158 = __VERIFIER_nondet_uchar() [L150] input_158 = input_158 & mask_SORT_1 [L151] input_159 = __VERIFIER_nondet_uchar() [L152] input_159 = input_159 & mask_SORT_1 [L153] input_160 = __VERIFIER_nondet_uchar() [L154] input_160 = input_160 & mask_SORT_1 [L155] input_161 = __VERIFIER_nondet_uchar() [L156] input_161 = input_161 & mask_SORT_1 [L157] input_169 = __VERIFIER_nondet_uchar() [L158] input_169 = input_169 & mask_SORT_1 [L159] input_175 = __VERIFIER_nondet_uchar() [L160] input_175 = input_175 & mask_SORT_1 [L161] input_181 = __VERIFIER_nondet_uchar() [L162] input_181 = input_181 & mask_SORT_1 [L163] input_196 = __VERIFIER_nondet_uchar() [L164] input_214 = __VERIFIER_nondet_uchar() [L165] input_232 = __VERIFIER_nondet_uchar() [L168] SORT_1 var_55_arg_0 = state_29; [L169] SORT_4 var_55_arg_1 = var_53; [L170] SORT_4 var_55_arg_2 = var_54; [L171] SORT_4 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L172] SORT_1 var_56_arg_0 = state_39; [L173] SORT_4 var_56_arg_1 = var_53; [L174] SORT_4 var_56_arg_2 = var_54; [L175] SORT_4 var_56 = var_56_arg_0 ? var_56_arg_1 : var_56_arg_2; [L176] SORT_4 var_57_arg_0 = var_55; [L177] SORT_4 var_57_arg_1 = var_56; [L178] SORT_4 var_57 = var_57_arg_0 + var_57_arg_1; [L179] SORT_1 var_58_arg_0 = state_49; [L180] SORT_4 var_58_arg_1 = var_53; [L181] SORT_4 var_58_arg_2 = var_54; [L182] SORT_4 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L183] SORT_4 var_59_arg_0 = var_57; [L184] SORT_4 var_59_arg_1 = var_58; [L185] SORT_4 var_59 = var_59_arg_0 + var_59_arg_1; [L186] var_59 = var_59 & mask_SORT_4 [L187] SORT_4 var_60_arg_0 = var_59; [L188] SORT_4 var_60_arg_1 = var_53; [L189] SORT_1 var_60 = var_60_arg_0 <= var_60_arg_1; [L190] SORT_1 var_61_arg_0 = ~state_51; [L191] var_61_arg_0 = var_61_arg_0 & mask_SORT_1 [L192] SORT_1 var_61_arg_1 = ~var_60; [L193] var_61_arg_1 = var_61_arg_1 & mask_SORT_1 [L194] SORT_1 var_61 = var_61_arg_0 & var_61_arg_1; [L195] var_61 = var_61 & mask_SORT_1 [L196] SORT_1 bad_62_arg_0 = var_61; [L197] CALL __VERIFIER_assert(!(bad_62_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 12:40:42,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 bcc688e871550efe2d61602f992013dded29799daf8ee65d6b52a75f7c1ba325 --- 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 12:40:44,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:40:44,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:40:44,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:40:44,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:40:44,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:40:44,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:40:44,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:40:44,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:40:44,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:40:44,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:40:44,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:40:44,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:40:44,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:40:44,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:40:44,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:40:44,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:40:44,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:40:44,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:40:44,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:40:44,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:40:44,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:40:44,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:40:44,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:40:44,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:40:44,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:40:44,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:40:44,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:40:44,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:40:44,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:40:44,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:40:44,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:40:44,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:40:44,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:40:44,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:40:44,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:40:44,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:40:44,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:40:44,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:40:44,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:40:44,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:40:44,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 12:40:44,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:40:44,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:40:44,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:40:44,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:40:44,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:40:44,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:40:44,462 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:40:44,462 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:40:44,462 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:40:44,462 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:40:44,462 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:40:44,463 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:40:44,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:40:44,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:40:44,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:40:44,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:40:44,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:40:44,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:40:44,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 12:40:44,464 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 12:40:44,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:40:44,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:40:44,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:40:44,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:40:44,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 12:40:44,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:40:44,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:40:44,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:40:44,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:40:44,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:40:44,466 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 12:40:44,466 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 12:40:44,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:40:44,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:40:44,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 12:40:44,467 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_067d3c40-84d2-4368-93a9-52b1c9f0588d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcc688e871550efe2d61602f992013dded29799daf8ee65d6b52a75f7c1ba325 [2022-12-14 12:40:44,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:40:44,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:40:44,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:40:44,730 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:40:44,730 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:40:44,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c [2022-12-14 12:40:47,363 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:40:47,591 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:40:47,592 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c [2022-12-14 12:40:47,604 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/data/bb60a419e/e39c3c4cbb324ecb8bf445df5374b61d/FLAG904471a3f [2022-12-14 12:40:47,618 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/data/bb60a419e/e39c3c4cbb324ecb8bf445df5374b61d [2022-12-14 12:40:47,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:40:47,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:40:47,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:40:47,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:40:47,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:40:47,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:40:47" (1/1) ... [2022-12-14 12:40:47,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eebcfb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:47, skipping insertion in model container [2022-12-14 12:40:47,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:40:47" (1/1) ... [2022-12-14 12:40:47,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:40:47,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:40:47,831 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_067d3c40-84d2-4368-93a9-52b1c9f0588d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c[1014,1027] [2022-12-14 12:40:48,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:40:48,044 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:40:48,054 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_067d3c40-84d2-4368-93a9-52b1c9f0588d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.3.prop1-func-interl.c[1014,1027] [2022-12-14 12:40:48,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:40:48,156 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:40:48,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48 WrapperNode [2022-12-14 12:40:48,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:40:48,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:40:48,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:40:48,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:40:48,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,234 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1386 [2022-12-14 12:40:48,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:40:48,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:40:48,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:40:48,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:40:48,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:40:48,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:40:48,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:40:48,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:40:48,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (1/1) ... [2022-12-14 12:40:48,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:40:48,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:40:48,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:40:48,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:40:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:40:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:40:48,619 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:40:48,621 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:40:50,658 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:40:50,663 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:40:50,663 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:40:50,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:40:50 BoogieIcfgContainer [2022-12-14 12:40:50,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:40:50,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:40:50,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:40:50,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:40:50,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:40:47" (1/3) ... [2022-12-14 12:40:50,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6f060b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:40:50, skipping insertion in model container [2022-12-14 12:40:50,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:40:48" (2/3) ... [2022-12-14 12:40:50,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6f060b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:40:50, skipping insertion in model container [2022-12-14 12:40:50,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:40:50" (3/3) ... [2022-12-14 12:40:50,670 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.3.prop1-func-interl.c [2022-12-14 12:40:50,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:40:50,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:40:50,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:40:50,721 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;@17f03647, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:40:50,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:40:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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 12:40:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:40:50,728 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:40:50,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:40:50,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:40:50,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:40:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 12:40:50,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:40:50,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065466782] [2022-12-14 12:40:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:40:50,742 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 12:40:50,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:40:50,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 12:40:50,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 12:40:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:40:50,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 12:40:50,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:40:51,204 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 12:40:51,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:40:51,205 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:40:51,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065466782] [2022-12-14 12:40:51,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065466782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:40:51,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:40:51,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:40:51,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948333032] [2022-12-14 12:40:51,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:40:51,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:40:51,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:40:51,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:40:51,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:40:51,240 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 12:40:52,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 12:40:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:40:53,009 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 12:40:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:40:53,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-12-14 12:40:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:40:53,017 INFO L225 Difference]: With dead ends: 20 [2022-12-14 12:40:53,017 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 12:40:53,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:40:53,021 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 12:40:53,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 12:40:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 12:40:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 12:40:53,042 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 12:40:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 12:40:53,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 12:40:53,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:40:53,044 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 12:40:53,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 12:40:53,044 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 12:40:53,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:40:53,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:40:53,045 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 12:40:53,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 12:40:53,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 12:40:53,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:40:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:40:53,250 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 12:40:53,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:40:53,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601250795] [2022-12-14 12:40:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:40:53,256 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 12:40:53,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:40:53,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 12:40:53,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 12:40:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:40:54,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-14 12:40:54,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:40:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:40:56,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:41:13,719 WARN L233 SmtUtils]: Spent 15.50s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:41:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:41:14,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:41:14,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601250795] [2022-12-14 12:41:14,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601250795] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:41:14,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2081085418] [2022-12-14 12:41:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:41:14,098 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:41:14,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:41:14,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:41:14,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 12:41:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:41:15,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 113 conjunts are in the unsatisfiable core [2022-12-14 12:41:15,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:41:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:41:16,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:41:49,153 WARN L233 SmtUtils]: Spent 29.45s on a formula simplification. DAG size of input: 85 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:43:35,946 WARN L233 SmtUtils]: Spent 1.67m on a formula simplification. DAG size of input: 253 DAG size of output: 247 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:43:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:36,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2081085418] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:43:36,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278255436] [2022-12-14 12:43:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:43:36,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:43:36,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:43:36,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:43:36,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:43:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:43:37,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 116 conjunts are in the unsatisfiable core [2022-12-14 12:43:37,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:43:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:43:38,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:45:32,387 WARN L233 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 253 DAG size of output: 247 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:46:28,269 WARN L233 SmtUtils]: Spent 50.18s on a formula simplification that was a NOOP. DAG size: 251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:46:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:46:28,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278255436] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:46:28,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:46:28,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2022-12-14 12:46:28,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036198674] [2022-12-14 12:46:28,673 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:46:28,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 12:46:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:46:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 12:46:28,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=144, Unknown=10, NotChecked=0, Total=210 [2022-12-14 12:46:28,675 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 12:46:32,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 12:46:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:46:34,782 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 12:46:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:46:34,783 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 8 [2022-12-14 12:46:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:46:34,783 INFO L225 Difference]: With dead ends: 16 [2022-12-14 12:46:34,783 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 12:46:34,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 327.3s TimeCoverageRelationStatistics Valid=92, Invalid=203, Unknown=11, NotChecked=0, Total=306 [2022-12-14 12:46:34,784 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:46:34,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-14 12:46:34,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 12:46:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 12:46:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:46:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 12:46:34,788 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 12:46:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:46:34,788 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 12:46:34,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 12:46:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 12:46:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:46:34,788 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:46:34,788 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 12:46:34,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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)] Forceful destruction successful, exit code 0 [2022-12-14 12:46:35,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-12-14 12:46:35,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 12:46:35,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:46:35,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:46:35,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:46:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 12:46:35,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:46:35,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424770569] [2022-12-14 12:46:35,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:46:35,398 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 12:46:35,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:46:35,399 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 12:46:35,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/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 (6)] Waiting until timeout for monitored process [2022-12-14 12:46:38,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:46:38,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:46:38,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 2316 conjuncts, 195 conjunts are in the unsatisfiable core [2022-12-14 12:46:38,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:46:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:46:40,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:49,613 WARN L233 SmtUtils]: Spent 2.09m on a formula simplification. DAG size of input: 237 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:50:25,265 WARN L233 SmtUtils]: Spent 1.46m on a formula simplification that was a NOOP. DAG size: 1242 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:50:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:50:27,700 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:50:27,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424770569] [2022-12-14 12:50:27,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424770569] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:50:27,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1312763475] [2022-12-14 12:50:27,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:50:27,701 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:50:27,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:50:27,702 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:50:27,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 12:50:30,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:50:30,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:50:30,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 2316 conjuncts, 233 conjunts are in the unsatisfiable core [2022-12-14 12:50:30,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:50:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:50:40,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:50:54,005 WARN L233 SmtUtils]: Spent 12.01s on a formula simplification. DAG size of input: 86 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:51:35,221 WARN L233 SmtUtils]: Spent 35.24s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:52:35,732 WARN L233 SmtUtils]: Spent 46.50s on a formula simplification that was a NOOP. DAG size: 907 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:52:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:36,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1312763475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:52:36,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218182134] [2022-12-14 12:52:36,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:52:36,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:52:36,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:52:36,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:52:36,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d3c40-84d2-4368-93a9-52b1c9f0588d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 12:52:37,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:52:37,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:52:37,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 2316 conjuncts, 237 conjunts are in the unsatisfiable core [2022-12-14 12:52:37,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:52:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:52:51,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:53:22,134 WARN L233 SmtUtils]: Spent 21.71s on a formula simplification. DAG size of input: 89 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)