./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b --- 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 08:22:48,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:22:48,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:22:48,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:22:48,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:22:48,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:22:48,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:22:48,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:22:48,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:22:48,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:22:48,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:22:48,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:22:48,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:22:48,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:22:48,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:22:48,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:22:48,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:22:48,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:22:48,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:22:48,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:22:48,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:22:48,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:22:48,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:22:48,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:22:48,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:22:48,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:22:48,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:22:48,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:22:48,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:22:48,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:22:48,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:22:48,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:22:48,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:22:48,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:22:48,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:22:48,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:22:48,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:22:48,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:22:48,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:22:48,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:22:48,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:22:48,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 08:22:48,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:22:48,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:22:48,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:22:48,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:22:48,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:22:48,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:22:48,318 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:22:48,318 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:22:48,318 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:22:48,318 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:22:48,318 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:22:48,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:22:48,318 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:22:48,318 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:22:48,318 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:22:48,318 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:22:48,319 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:22:48,319 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:22:48,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:22:48,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:22:48,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:22:48,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:22:48,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:22:48,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:22:48,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:22:48,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:22:48,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:22:48,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:22:48,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:22:48,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:22:48,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:22:48,320 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:22:48,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:22:48,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:22:48,321 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:22:48,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:22:48,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:22:48,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:22:48,321 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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b [2022-12-14 08:22:48,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:22:48,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:22:48,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:22:48,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:22:48,541 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:22:48,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-12-14 08:22:51,135 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:22:51,338 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:22:51,338 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-12-14 08:22:51,348 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/data/d0ebc63fc/68e9db546ec74a8998c9c5f6fe5ba9a2/FLAG491b7c037 [2022-12-14 08:22:51,359 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/data/d0ebc63fc/68e9db546ec74a8998c9c5f6fe5ba9a2 [2022-12-14 08:22:51,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:22:51,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:22:51,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:22:51,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:22:51,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:22:51,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:51,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726b7351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51, skipping insertion in model container [2022-12-14 08:22:51,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:51,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:22:51,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:22:51,577 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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-12-14 08:22:51,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:22:51,831 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:22:51,841 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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-12-14 08:22:51,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:22:51,954 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:22:51,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51 WrapperNode [2022-12-14 08:22:51,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:22:51,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:22:51,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:22:51,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:22:51,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:51,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,053 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1774 [2022-12-14 08:22:52,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:22:52,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:22:52,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:22:52,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:22:52,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,109 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:22:52,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:22:52,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:22:52,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:22:52,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (1/1) ... [2022-12-14 08:22:52,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:22:52,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:22:52,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:22:52,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:22:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:22:52,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:22:52,522 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:22:52,524 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:25:17,595 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:25:17,626 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:25:17,626 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:25:17,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:25:17 BoogieIcfgContainer [2022-12-14 08:25:17,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:25:17,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:25:17,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:25:17,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:25:17,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:22:51" (1/3) ... [2022-12-14 08:25:17,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75546892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:25:17, skipping insertion in model container [2022-12-14 08:25:17,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:22:51" (2/3) ... [2022-12-14 08:25:17,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75546892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:25:17, skipping insertion in model container [2022-12-14 08:25:17,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:25:17" (3/3) ... [2022-12-14 08:25:17,637 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-12-14 08:25:17,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:25:17,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:25:17,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:25:17,695 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;@29e53c76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:25:17,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:25:17,698 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 08:25:17,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 08:25:17,702 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:25:17,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 08:25:17,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:25:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:25:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 08:25:17,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:25:17,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178801103] [2022-12-14 08:25:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:25:17,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:25:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:25:17,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:25:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:25:17,968 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:25:17,970 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:25:17,971 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 08:25:17,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:25:17,977 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 08:25:17,981 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:25:18,004 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 08:25:18,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:25:18 BoogieIcfgContainer [2022-12-14 08:25:18,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:25:18,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:25:18,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:25:18,011 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:25:18,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:25:17" (3/4) ... [2022-12-14 08:25:18,015 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:25:18,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:25:18,016 INFO L158 Benchmark]: Toolchain (without parser) took 146653.37ms. Allocated memory was 201.3MB in the beginning and 740.3MB in the end (delta: 539.0MB). Free memory was 133.6MB in the beginning and 258.4MB in the end (delta: -124.8MB). Peak memory consumption was 415.3MB. Max. memory is 16.1GB. [2022-12-14 08:25:18,017 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 176.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:25:18,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 591.53ms. Allocated memory is still 201.3MB. Free memory was 133.4MB in the beginning and 131.0MB in the end (delta: 2.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-12-14 08:25:18,018 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.17ms. Allocated memory is still 201.3MB. Free memory was 131.0MB in the beginning and 112.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 08:25:18,019 INFO L158 Benchmark]: Boogie Preprocessor took 74.93ms. Allocated memory is still 201.3MB. Free memory was 112.1MB in the beginning and 102.4MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 08:25:18,020 INFO L158 Benchmark]: RCFGBuilder took 145499.48ms. Allocated memory was 201.3MB in the beginning and 740.3MB in the end (delta: 539.0MB). Free memory was 102.4MB in the beginning and 295.2MB in the end (delta: -192.8MB). Peak memory consumption was 407.7MB. Max. memory is 16.1GB. [2022-12-14 08:25:18,020 INFO L158 Benchmark]: TraceAbstraction took 378.83ms. Allocated memory is still 740.3MB. Free memory was 295.2MB in the beginning and 258.4MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 08:25:18,021 INFO L158 Benchmark]: Witness Printer took 4.76ms. Allocated memory is still 740.3MB. Free memory is still 258.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:25:18,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 176.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 591.53ms. Allocated memory is still 201.3MB. Free memory was 133.4MB in the beginning and 131.0MB in the end (delta: 2.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.17ms. Allocated memory is still 201.3MB. Free memory was 131.0MB in the beginning and 112.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.93ms. Allocated memory is still 201.3MB. Free memory was 112.1MB in the beginning and 102.4MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 145499.48ms. Allocated memory was 201.3MB in the beginning and 740.3MB in the end (delta: 539.0MB). Free memory was 102.4MB in the beginning and 295.2MB in the end (delta: -192.8MB). Peak memory consumption was 407.7MB. Max. memory is 16.1GB. * TraceAbstraction took 378.83ms. Allocated memory is still 740.3MB. Free memory was 295.2MB in the beginning and 258.4MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 4.76ms. Allocated memory is still 740.3MB. Free memory is still 258.4MB. 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 183, overapproximation of bitwiseAnd at line 190. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 12); [L32] const SORT_6 msb_SORT_6 = (SORT_6)1 << (12 - 1); [L34] const SORT_45 mask_SORT_45 = (SORT_45)-1 >> (sizeof(SORT_45) * 8 - 3); [L35] const SORT_45 msb_SORT_45 = (SORT_45)1 << (3 - 1); [L37] const SORT_87 mask_SORT_87 = (SORT_87)-1 >> (sizeof(SORT_87) * 8 - 17); [L38] const SORT_87 msb_SORT_87 = (SORT_87)1 << (17 - 1); [L40] const SORT_88 mask_SORT_88 = (SORT_88)-1 >> (sizeof(SORT_88) * 8 - 5); [L41] const SORT_88 msb_SORT_88 = (SORT_88)1 << (5 - 1); [L43] const SORT_91 mask_SORT_91 = (SORT_91)-1 >> (sizeof(SORT_91) * 8 - 9); [L44] const SORT_91 msb_SORT_91 = (SORT_91)1 << (9 - 1); [L46] const SORT_93 mask_SORT_93 = (SORT_93)-1 >> (sizeof(SORT_93) * 8 - 10); [L47] const SORT_93 msb_SORT_93 = (SORT_93)1 << (10 - 1); [L49] const SORT_96 mask_SORT_96 = (SORT_96)-1 >> (sizeof(SORT_96) * 8 - 11); [L50] const SORT_96 msb_SORT_96 = (SORT_96)1 << (11 - 1); [L52] const SORT_101 mask_SORT_101 = (SORT_101)-1 >> (sizeof(SORT_101) * 8 - 13); [L53] const SORT_101 msb_SORT_101 = (SORT_101)1 << (13 - 1); [L55] const SORT_104 mask_SORT_104 = (SORT_104)-1 >> (sizeof(SORT_104) * 8 - 14); [L56] const SORT_104 msb_SORT_104 = (SORT_104)1 << (14 - 1); [L58] const SORT_107 mask_SORT_107 = (SORT_107)-1 >> (sizeof(SORT_107) * 8 - 15); [L59] const SORT_107 msb_SORT_107 = (SORT_107)1 << (15 - 1); [L61] const SORT_140 mask_SORT_140 = (SORT_140)-1 >> (sizeof(SORT_140) * 8 - 7); [L62] const SORT_140 msb_SORT_140 = (SORT_140)1 << (7 - 1); [L64] const SORT_200 mask_SORT_200 = (SORT_200)-1 >> (sizeof(SORT_200) * 8 - 2); [L65] const SORT_200 msb_SORT_200 = (SORT_200)1 << (2 - 1); [L67] const SORT_359 mask_SORT_359 = (SORT_359)-1 >> (sizeof(SORT_359) * 8 - 4); [L68] const SORT_359 msb_SORT_359 = (SORT_359)1 << (4 - 1); [L70] const SORT_362 mask_SORT_362 = (SORT_362)-1 >> (sizeof(SORT_362) * 8 - 6); [L71] const SORT_362 msb_SORT_362 = (SORT_362)1 << (6 - 1); [L73] const SORT_365 mask_SORT_365 = (SORT_365)-1 >> (sizeof(SORT_365) * 8 - 8); [L74] const SORT_365 msb_SORT_365 = (SORT_365)1 << (8 - 1); [L76] const SORT_6 var_7 = 0; [L77] const SORT_1 var_19 = 1; [L78] const SORT_3 var_23 = 0; [L79] const SORT_1 var_30 = 0; [L80] const SORT_45 var_46 = 0; [L81] const SORT_45 var_50 = 2; [L82] const SORT_45 var_54 = 1; [L83] const SORT_45 var_59 = 4; [L84] const SORT_45 var_61 = 5; [L85] const SORT_45 var_65 = 3; [L86] const SORT_6 var_74 = 2; [L87] const SORT_88 var_89 = 0; [L88] const SORT_140 var_142 = 5; [L89] const SORT_140 var_146 = 4; [L90] const SORT_140 var_150 = 3; [L91] const SORT_140 var_154 = 2; [L92] const SORT_140 var_158 = 1; [L93] const SORT_140 var_162 = 0; [L94] const SORT_200 var_202 = 0; [L95] const SORT_3 var_209 = 65535; [L97] SORT_1 input_2; [L98] SORT_3 input_4; [L99] SORT_3 input_5; [L100] SORT_3 input_197; [L101] SORT_3 input_198; [L102] SORT_3 input_199; [L103] SORT_3 input_208; [L104] SORT_3 input_217; [L105] SORT_3 input_218; [L106] SORT_3 input_219; [L107] SORT_3 input_222; [L108] SORT_3 input_240; [L109] SORT_3 input_241; [L110] SORT_3 input_242; [L111] SORT_3 input_245; [L112] SORT_3 input_247; [L113] SORT_200 input_261; [L114] SORT_200 input_262; [L115] SORT_200 input_263; [L117] SORT_6 state_8 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L118] SORT_6 state_12 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L119] SORT_3 state_24 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L120] SORT_3 state_26 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L121] SORT_3 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L122] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_3 state_33 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L124] SORT_3 state_35 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L125] SORT_3 state_37 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L126] SORT_3 state_39 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L127] SORT_3 state_41 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L128] SORT_3 state_43 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L129] SORT_45 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_45; [L131] SORT_6 init_9_arg_1 = var_7; [L132] state_8 = init_9_arg_1 [L133] SORT_6 init_13_arg_1 = var_7; [L134] state_12 = init_13_arg_1 [L135] SORT_3 init_25_arg_1 = var_23; [L136] state_24 = init_25_arg_1 [L137] SORT_3 init_27_arg_1 = var_23; [L138] state_26 = init_27_arg_1 [L139] SORT_3 init_29_arg_1 = var_23; [L140] state_28 = init_29_arg_1 [L141] SORT_1 init_32_arg_1 = var_30; [L142] state_31 = init_32_arg_1 [L143] SORT_3 init_34_arg_1 = var_23; [L144] state_33 = init_34_arg_1 [L145] SORT_3 init_36_arg_1 = var_23; [L146] state_35 = init_36_arg_1 [L147] SORT_3 init_38_arg_1 = var_23; [L148] state_37 = init_38_arg_1 [L149] SORT_3 init_40_arg_1 = var_23; [L150] state_39 = init_40_arg_1 [L151] SORT_3 init_42_arg_1 = var_23; [L152] state_41 = init_42_arg_1 [L153] SORT_3 init_44_arg_1 = var_23; [L154] state_43 = init_44_arg_1 [L155] SORT_45 init_48_arg_1 = var_46; [L156] state_47 = init_48_arg_1 VAL [init_13_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_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_48_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_101=8191, mask_SORT_104=16383, mask_SORT_107=32767, mask_SORT_140=127, mask_SORT_200=3, mask_SORT_3=65535, mask_SORT_359=15, mask_SORT_362=63, mask_SORT_365=255, mask_SORT_45=7, mask_SORT_6=4095, mask_SORT_87=4294967295, mask_SORT_88=31, mask_SORT_91=511, mask_SORT_93=1023, mask_SORT_96=2047, msb_SORT_1=1, msb_SORT_101=4096, msb_SORT_104=8192, msb_SORT_107=16384, msb_SORT_140=64, msb_SORT_200=2, msb_SORT_3=32768, msb_SORT_359=8, msb_SORT_362=32, msb_SORT_365=128, msb_SORT_45=4, msb_SORT_6=2048, msb_SORT_87=65536, msb_SORT_88=16, msb_SORT_91=256, msb_SORT_93=512, msb_SORT_96=1024, state_12=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_47=0, state_8=0, var_142=5, var_146=4, var_150=3, var_154=2, var_158=1, var_162=0, var_19=1, var_202=0, var_209=65535, var_23=0, var_30=0, var_46=0, var_50=2, var_54=1, var_59=4, var_61=5, var_65=3, var_7=0, var_74=2, var_89=0] [L159] input_2 = __VERIFIER_nondet_uchar() [L160] input_4 = __VERIFIER_nondet_ushort() [L161] input_5 = __VERIFIER_nondet_ushort() [L162] input_197 = __VERIFIER_nondet_ushort() [L163] input_198 = __VERIFIER_nondet_ushort() [L164] input_199 = __VERIFIER_nondet_ushort() [L165] input_208 = __VERIFIER_nondet_ushort() [L166] input_217 = __VERIFIER_nondet_ushort() [L167] input_218 = __VERIFIER_nondet_ushort() [L168] input_219 = __VERIFIER_nondet_ushort() [L169] input_222 = __VERIFIER_nondet_ushort() [L170] input_240 = __VERIFIER_nondet_ushort() [L171] input_241 = __VERIFIER_nondet_ushort() [L172] input_242 = __VERIFIER_nondet_ushort() [L173] input_245 = __VERIFIER_nondet_ushort() [L174] input_247 = __VERIFIER_nondet_ushort() [L175] input_261 = __VERIFIER_nondet_uchar() [L176] input_262 = __VERIFIER_nondet_uchar() [L177] input_263 = __VERIFIER_nondet_uchar() [L180] SORT_6 var_10_arg_0 = state_8; [L181] SORT_1 var_10 = var_10_arg_0 >> 0; [L182] SORT_1 var_11_arg_0 = var_10; [L183] SORT_1 var_11 = ~var_11_arg_0; [L184] SORT_6 var_14_arg_0 = state_12; [L185] SORT_1 var_14 = var_14_arg_0 >> 0; [L186] SORT_1 var_15_arg_0 = var_14; [L187] SORT_1 var_15 = ~var_15_arg_0; [L188] SORT_1 var_16_arg_0 = var_11; [L189] SORT_1 var_16_arg_1 = var_15; [L190] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L191] SORT_1 var_20_arg_0 = var_16; [L192] SORT_1 var_20 = ~var_20_arg_0; [L193] SORT_1 var_21_arg_0 = var_19; [L194] SORT_1 var_21_arg_1 = var_20; [L195] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L196] var_21 = var_21 & mask_SORT_1 [L197] SORT_1 bad_22_arg_0 = var_21; [L198] CALL __VERIFIER_assert(!(bad_22_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: 0.3s, 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 08:25:18,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b --- 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 08:25:19,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:25:19,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:25:19,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:25:19,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:25:19,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:25:19,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:25:19,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:25:19,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:25:19,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:25:19,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:25:19,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:25:19,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:25:19,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:25:19,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:25:19,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:25:19,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:25:19,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:25:19,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:25:19,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:25:19,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:25:19,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:25:19,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:25:19,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:25:19,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:25:19,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:25:19,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:25:19,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:25:19,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:25:19,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:25:19,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:25:19,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:25:19,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:25:19,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:25:19,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:25:19,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:25:19,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:25:19,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:25:19,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:25:19,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:25:19,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:25:19,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 08:25:19,793 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:25:19,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:25:19,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:25:19,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:25:19,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:25:19,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:25:19,795 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:25:19,795 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:25:19,796 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:25:19,796 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:25:19,796 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:25:19,796 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:25:19,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:25:19,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:25:19,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:25:19,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:25:19,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:25:19,797 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:25:19,797 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:25:19,797 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:25:19,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:25:19,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:25:19,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:25:19,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:25:19,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:25:19,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:25:19,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:25:19,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:25:19,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:25:19,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:25:19,799 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:25:19,803 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:25:19,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:25:19,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:25:19,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:25:19,804 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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b [2022-12-14 08:25:20,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:25:20,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:25:20,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:25:20,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:25:20,045 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:25:20,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-12-14 08:25:22,674 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:25:22,939 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:25:22,939 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-12-14 08:25:22,957 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/data/b4e5a6186/16510de649254649b3cbc8c59f5acd01/FLAGf9fe44fd5 [2022-12-14 08:25:22,971 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/data/b4e5a6186/16510de649254649b3cbc8c59f5acd01 [2022-12-14 08:25:22,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:25:22,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:25:22,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:25:22,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:25:22,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:25:22,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:25:22" (1/1) ... [2022-12-14 08:25:22,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13646bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:22, skipping insertion in model container [2022-12-14 08:25:22,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:25:22" (1/1) ... [2022-12-14 08:25:22,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:25:23,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:25:23,195 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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-12-14 08:25:23,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:25:23,470 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:25:23,481 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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-12-14 08:25:23,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:25:23,578 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:25:23,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23 WrapperNode [2022-12-14 08:25:23,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:25:23,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:25:23,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:25:23,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:25:23,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,698 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1774 [2022-12-14 08:25:23,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:25:23,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:25:23,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:25:23,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:25:23,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:25:23,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:25:23,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:25:23,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:25:23,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (1/1) ... [2022-12-14 08:25:23,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:25:23,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:25:23,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:25:23,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:25:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:25:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:25:24,152 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:25:24,154 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:25:25,996 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:25:26,002 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:25:26,002 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:25:26,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:25:26 BoogieIcfgContainer [2022-12-14 08:25:26,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:25:26,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:25:26,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:25:26,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:25:26,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:25:22" (1/3) ... [2022-12-14 08:25:26,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30600fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:25:26, skipping insertion in model container [2022-12-14 08:25:26,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:25:23" (2/3) ... [2022-12-14 08:25:26,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30600fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:25:26, skipping insertion in model container [2022-12-14 08:25:26,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:25:26" (3/3) ... [2022-12-14 08:25:26,010 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-12-14 08:25:26,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:25:26,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:25:26,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:25:26,076 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;@3193f6fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:25:26,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:25:26,080 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 08:25:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 08:25:26,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:25:26,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 08:25:26,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:25:26,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:25:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 08:25:26,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:25:26,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479104817] [2022-12-14 08:25:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:25:26,103 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 08:25:26,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:25:26,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 08:25:26,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 08:25:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:25:26,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 08:25:26,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:25:26,435 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 08:25:26,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:25:26,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:25:26,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479104817] [2022-12-14 08:25:26,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479104817] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:25:26,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:25:26,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:25:26,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117060659] [2022-12-14 08:25:26,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:25:26,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:25:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:25:26,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:25:26,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:25:26,472 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 08:25:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:25:26,658 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 08:25:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:25:26,660 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 08:25:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:25:26,665 INFO L225 Difference]: With dead ends: 20 [2022-12-14 08:25:26,665 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 08:25:26,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:25:26,669 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:25:26,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:25:26,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 08:25:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 08:25:26,689 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 08:25:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 08:25:26,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 08:25:26,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:25:26,690 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 08:25:26,690 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 08:25:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 08:25:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:25:26,691 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:25:26,691 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:25:26,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 08:25:26,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 08:25:26,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:25:26,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:25:26,898 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 08:25:26,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:25:26,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069808664] [2022-12-14 08:25:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:25:26,915 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 08:25:26,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:25:26,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 08:25:26,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 08:25:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:25:27,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-14 08:25:27,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:25:27,825 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 08:25:27,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:25:28,425 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 08:25:28,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:25:28,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069808664] [2022-12-14 08:25:28,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069808664] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:25:28,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1797181264] [2022-12-14 08:25:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:25:28,426 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:25:28,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:25:28,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:25:28,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 08:25:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:25:29,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-14 08:25:29,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:25:29,860 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 08:25:29,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:25:34,577 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 08:25:34,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1797181264] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:25:34,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773142126] [2022-12-14 08:25:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:25:34,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:25:34,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:25:34,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:25:34,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:25:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:25:35,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-14 08:25:35,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:25:35,226 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 08:25:35,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:25:42,912 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 08:25:42,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773142126] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:25:42,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:25:42,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2022-12-14 08:25:42,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492493958] [2022-12-14 08:25:42,913 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:25:42,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 08:25:42,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:25:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 08:25:42,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=126, Unknown=5, NotChecked=0, Total=182 [2022-12-14 08:25:42,915 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 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 08:25:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:25:43,414 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 08:25:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:25:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 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 08:25:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:25:43,415 INFO L225 Difference]: With dead ends: 16 [2022-12-14 08:25:43,415 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 08:25:43,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=84, Invalid=183, Unknown=5, NotChecked=0, Total=272 [2022-12-14 08:25:43,416 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:25:43,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:25:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 08:25:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 08:25:43,419 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 08:25:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 08:25:43,419 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 08:25:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:25:43,419 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 08:25:43,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 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 08:25:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 08:25:43,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:25:43,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:25:43,420 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 08:25:43,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:25:43,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 08:25:43,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 08:25:44,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:25:44,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:25:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:25:44,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 08:25:44,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:25:44,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5893671] [2022-12-14 08:25:44,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:25:44,030 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 08:25:44,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:25:44,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 08:25:44,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 08:25:44,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:25:44,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:25:44,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 77 conjunts are in the unsatisfiable core [2022-12-14 08:25:44,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:25:45,224 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 08:25:45,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:26:19,317 WARN L233 SmtUtils]: Spent 31.82s on a formula simplification. DAG size of input: 271 DAG size of output: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:26:19,437 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 08:26:19,437 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:26:19,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5893671] [2022-12-14 08:26:19,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5893671] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:26:19,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1723998599] [2022-12-14 08:26:19,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:26:19,438 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:26:19,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:26:19,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:26:19,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 08:26:21,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:26:21,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:26:21,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-14 08:26:21,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:26:21,605 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 08:26:21,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:26:48,859 WARN L233 SmtUtils]: Spent 21.11s on a formula simplification. DAG size of input: 271 DAG size of output: 208 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:26:48,982 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 08:26:48,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1723998599] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:26:48,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592580681] [2022-12-14 08:26:48,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:26:48,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:26:48,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:26:48,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:26:48,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:26:49,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:26:49,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:26:49,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 82 conjunts are in the unsatisfiable core [2022-12-14 08:26:49,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:26:50,106 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 08:26:50,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:27:15,344 WARN L233 SmtUtils]: Spent 12.00s on a formula simplification. DAG size of input: 130 DAG size of output: 129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:27:45,549 WARN L233 SmtUtils]: Spent 19.98s on a formula simplification that was a NOOP. DAG size: 164 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:28:07,730 WARN L233 SmtUtils]: Spent 17.98s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:28:07,817 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 08:28:07,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592580681] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:28:07,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:28:07,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 9, 9] total 23 [2022-12-14 08:28:07,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888448759] [2022-12-14 08:28:07,817 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:28:07,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 08:28:07,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:28:07,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 08:28:07,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=416, Unknown=15, NotChecked=0, Total=506 [2022-12-14 08:28:07,819 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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 08:28:19,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 08:28:21,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 08:28:23,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 08:28:25,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 08:28:56,863 WARN L233 SmtUtils]: Spent 22.79s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:28:58,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 08:28:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:28:58,878 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-12-14 08:28:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 08:28:58,879 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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 11 [2022-12-14 08:28:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:28:58,879 INFO L225 Difference]: With dead ends: 22 [2022-12-14 08:28:58,879 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 08:28:58,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 177.3s TimeCoverageRelationStatistics Valid=145, Invalid=644, Unknown=23, NotChecked=0, Total=812 [2022-12-14 08:28:58,881 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:28:58,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 42 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 5 Unknown, 0 Unchecked, 11.5s Time] [2022-12-14 08:28:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 08:28:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-14 08:28:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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 08:28:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-12-14 08:28:58,886 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-12-14 08:28:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:28:58,886 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-12-14 08:28:58,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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 08:28:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-12-14 08:28:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 08:28:58,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:28:58,887 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-12-14 08:28:58,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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)] Ended with exit code 0 [2022-12-14 08:28:59,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 08:28:59,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 08:28:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:28:59,490 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:28:59,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:28:59,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-12-14 08:28:59,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:28:59,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166230058] [2022-12-14 08:28:59,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:28:59,498 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 08:28:59,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:28:59,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 08:28:59,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace5ed3f-b05f-4226-9b0a-bf0aed512df3/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 (9)] Waiting until timeout for monitored process [2022-12-14 08:29:01,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 08:29:01,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:29:01,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 5971 conjuncts, 178 conjunts are in the unsatisfiable core [2022-12-14 08:29:01,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:29:27,821 WARN L233 SmtUtils]: Spent 12.51s on a formula simplification. DAG size of input: 232 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:29:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 08:29:27,966 INFO L328 TraceCheckSpWp]: Computing backward predicates...