./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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_be3f4329-fb99-4317-82f0-602f641225e7/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 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 --- 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 15:08:53,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:08:53,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:08:53,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:08:53,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:08:53,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:08:53,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:08:53,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:08:53,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:08:53,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:08:53,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:08:53,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:08:53,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:08:53,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:08:53,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:08:53,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:08:53,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:08:53,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:08:53,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:08:53,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:08:53,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:08:53,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:08:53,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:08:53,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:08:53,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:08:53,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:08:53,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:08:53,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:08:53,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:08:53,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:08:53,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:08:53,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:08:53,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:08:53,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:08:53,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:08:53,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:08:53,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:08:53,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:08:53,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:08:53,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:08:53,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:08:53,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 15:08:53,315 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:08:53,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:08:53,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:08:53,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:08:53,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:08:53,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:08:53,317 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:08:53,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:08:53,317 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:08:53,317 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:08:53,317 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:08:53,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:08:53,318 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:08:53,318 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:08:53,318 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:08:53,318 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:08:53,318 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:08:53,319 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:08:53,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:08:53,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:08:53,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:08:53,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:08:53,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:08:53,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:08:53,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:08:53,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:08:53,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:08:53,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:08:53,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:08:53,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:08:53,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:08:53,321 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:08:53,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:08:53,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:08:53,322 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:08:53,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:08:53,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:08:53,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:08:53,322 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_be3f4329-fb99-4317-82f0-602f641225e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 [2022-12-14 15:08:53,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:08:53,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:08:53,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:08:53,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:08:53,521 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:08:53,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-12-14 15:08:56,072 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:08:56,293 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:08:56,294 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-12-14 15:08:56,303 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/data/72b2a0efe/73d244490ded48568860059801ab15e3/FLAGc0f26f866 [2022-12-14 15:08:56,314 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/data/72b2a0efe/73d244490ded48568860059801ab15e3 [2022-12-14 15:08:56,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:08:56,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:08:56,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:08:56,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:08:56,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:08:56,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757d5f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56, skipping insertion in model container [2022-12-14 15:08:56,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:08:56,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:08:56,473 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_be3f4329-fb99-4317-82f0-602f641225e7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-12-14 15:08:56,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:08:56,638 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:08:56,646 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_be3f4329-fb99-4317-82f0-602f641225e7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-12-14 15:08:56,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:08:56,743 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:08:56,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56 WrapperNode [2022-12-14 15:08:56,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:08:56,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:08:56,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:08:56,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:08:56,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,842 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1323 [2022-12-14 15:08:56,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:08:56,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:08:56,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:08:56,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:08:56,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:08:56,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:08:56,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:08:56,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:08:56,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (1/1) ... [2022-12-14 15:08:56,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:08:56,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:08:56,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:08:56,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:08:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:08:56,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:08:57,207 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:08:57,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:10:30,816 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:10:30,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:10:30,842 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:10:30,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:10:30 BoogieIcfgContainer [2022-12-14 15:10:30,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:10:30,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:10:30,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:10:30,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:10:30,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:08:56" (1/3) ... [2022-12-14 15:10:30,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d73090e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:10:30, skipping insertion in model container [2022-12-14 15:10:30,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:56" (2/3) ... [2022-12-14 15:10:30,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d73090e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:10:30, skipping insertion in model container [2022-12-14 15:10:30,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:10:30" (3/3) ... [2022-12-14 15:10:30,853 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-12-14 15:10:30,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:10:30,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:10:30,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:10:30,917 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;@d0ddb7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:10:30,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:10:30,920 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 15:10:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 15:10:30,925 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:10:30,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 15:10:30,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:10:30,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:10:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 15:10:30,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:10:30,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387693996] [2022-12-14 15:10:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:10:30,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:10:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:10:31,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:10:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:10:31,192 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:10:31,193 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:10:31,194 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 15:10:31,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:10:31,199 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 15:10:31,202 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:10:31,216 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 15:10:31,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:10:31 BoogieIcfgContainer [2022-12-14 15:10:31,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:10:31,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:10:31,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:10:31,224 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:10:31,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:10:30" (3/4) ... [2022-12-14 15:10:31,227 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 15:10:31,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:10:31,228 INFO L158 Benchmark]: Toolchain (without parser) took 94910.82ms. Allocated memory was 146.8MB in the beginning and 849.3MB in the end (delta: 702.5MB). Free memory was 111.3MB in the beginning and 443.4MB in the end (delta: -332.1MB). Peak memory consumption was 372.5MB. Max. memory is 16.1GB. [2022-12-14 15:10:31,228 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:10:31,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.31ms. Allocated memory is still 146.8MB. Free memory was 111.3MB in the beginning and 66.3MB in the end (delta: 45.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-12-14 15:10:31,229 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.97ms. Allocated memory is still 146.8MB. Free memory was 66.3MB in the beginning and 105.1MB in the end (delta: -38.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2022-12-14 15:10:31,230 INFO L158 Benchmark]: Boogie Preprocessor took 92.35ms. Allocated memory was 146.8MB in the beginning and 180.4MB in the end (delta: 33.6MB). Free memory was 105.0MB in the beginning and 132.7MB in the end (delta: -27.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-12-14 15:10:31,230 INFO L158 Benchmark]: RCFGBuilder took 93909.02ms. Allocated memory was 180.4MB in the beginning and 849.3MB in the end (delta: 669.0MB). Free memory was 132.7MB in the beginning and 484.3MB in the end (delta: -351.7MB). Peak memory consumption was 513.3MB. Max. memory is 16.1GB. [2022-12-14 15:10:31,231 INFO L158 Benchmark]: TraceAbstraction took 376.10ms. Allocated memory is still 849.3MB. Free memory was 484.3MB in the beginning and 443.4MB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-12-14 15:10:31,231 INFO L158 Benchmark]: Witness Printer took 3.44ms. Allocated memory is still 849.3MB. Free memory is still 443.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:10:31,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 425.31ms. Allocated memory is still 146.8MB. Free memory was 111.3MB in the beginning and 66.3MB in the end (delta: 45.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.97ms. Allocated memory is still 146.8MB. Free memory was 66.3MB in the beginning and 105.1MB in the end (delta: -38.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.35ms. Allocated memory was 146.8MB in the beginning and 180.4MB in the end (delta: 33.6MB). Free memory was 105.0MB in the beginning and 132.7MB in the end (delta: -27.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * RCFGBuilder took 93909.02ms. Allocated memory was 180.4MB in the beginning and 849.3MB in the end (delta: 669.0MB). Free memory was 132.7MB in the beginning and 484.3MB in the end (delta: -351.7MB). Peak memory consumption was 513.3MB. Max. memory is 16.1GB. * TraceAbstraction took 376.10ms. Allocated memory is still 849.3MB. Free memory was 484.3MB in the beginning and 443.4MB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 3.44ms. Allocated memory is still 849.3MB. Free memory is still 443.4MB. 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 190, overapproximation of bitwiseAnd at line 146. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_20 = 0; [L39] const SORT_4 var_53 = 1; [L40] const SORT_4 var_54 = 0; [L41] const SORT_2 var_63 = 1; [L42] const SORT_3 var_65 = 0; [L43] const SORT_4 var_68 = 3; [L44] const SORT_2 var_72 = 0; [L45] const SORT_4 var_122 = 2; [L46] const SORT_2 var_125 = 2; [L48] SORT_1 input_64; [L49] SORT_1 input_74; [L50] SORT_1 input_76; [L51] SORT_1 input_83; [L52] SORT_1 input_85; [L53] SORT_1 input_92; [L54] SORT_1 input_143; [L55] SORT_1 input_147; [L56] SORT_1 input_150; [L57] SORT_1 input_151; [L58] SORT_1 input_152; [L59] SORT_1 input_153; [L60] SORT_1 input_161; [L61] SORT_1 input_167; [L62] SORT_1 input_173; [L63] SORT_1 input_188; [L64] SORT_1 input_206; [L65] SORT_1 input_224; [L67] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_2 init_7_arg_1 = var_5; [L92] state_6 = init_7_arg_1 [L93] SORT_2 init_9_arg_1 = var_5; [L94] state_8 = init_9_arg_1 [L95] SORT_2 init_11_arg_1 = var_5; [L96] state_10 = init_11_arg_1 [L97] SORT_2 init_13_arg_1 = var_5; [L98] state_12 = init_13_arg_1 [L99] SORT_2 init_15_arg_1 = var_5; [L100] state_14 = init_15_arg_1 [L101] SORT_2 init_17_arg_1 = var_5; [L102] state_16 = init_17_arg_1 [L103] SORT_2 init_19_arg_1 = var_5; [L104] state_18 = init_19_arg_1 [L105] SORT_1 init_22_arg_1 = var_20; [L106] state_21 = init_22_arg_1 [L107] SORT_1 init_24_arg_1 = var_20; [L108] state_23 = init_24_arg_1 [L109] SORT_1 init_26_arg_1 = var_20; [L110] state_25 = init_26_arg_1 [L111] SORT_1 init_28_arg_1 = var_20; [L112] state_27 = init_28_arg_1 [L113] SORT_1 init_30_arg_1 = var_20; [L114] state_29 = init_30_arg_1 [L115] SORT_1 init_32_arg_1 = var_20; [L116] state_31 = init_32_arg_1 [L117] SORT_1 init_34_arg_1 = var_20; [L118] state_33 = init_34_arg_1 [L119] SORT_1 init_36_arg_1 = var_20; [L120] state_35 = init_36_arg_1 [L121] SORT_1 init_38_arg_1 = var_20; [L122] state_37 = init_38_arg_1 [L123] SORT_1 init_40_arg_1 = var_20; [L124] state_39 = init_40_arg_1 [L125] SORT_1 init_42_arg_1 = var_20; [L126] state_41 = init_42_arg_1 [L127] SORT_1 init_44_arg_1 = var_20; [L128] state_43 = init_44_arg_1 [L129] SORT_1 init_46_arg_1 = var_20; [L130] state_45 = init_46_arg_1 [L131] SORT_1 init_48_arg_1 = var_20; [L132] state_47 = init_48_arg_1 [L133] SORT_1 init_50_arg_1 = var_20; [L134] state_49 = init_50_arg_1 [L135] SORT_1 init_52_arg_1 = var_20; [L136] state_51 = init_52_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_6=0, state_8=0, var_122=2, var_125=2, var_20=0, var_5=0, var_53=1, var_54=0, var_63=1, var_65=0, var_68=3, var_72=0] [L139] input_64 = __VERIFIER_nondet_uchar() [L140] input_74 = __VERIFIER_nondet_uchar() [L141] input_76 = __VERIFIER_nondet_uchar() [L142] input_83 = __VERIFIER_nondet_uchar() [L143] input_85 = __VERIFIER_nondet_uchar() [L144] input_92 = __VERIFIER_nondet_uchar() [L145] input_143 = __VERIFIER_nondet_uchar() [L146] input_143 = input_143 & mask_SORT_1 [L147] input_147 = __VERIFIER_nondet_uchar() [L148] input_147 = input_147 & mask_SORT_1 [L149] input_150 = __VERIFIER_nondet_uchar() [L150] input_150 = input_150 & mask_SORT_1 [L151] input_151 = __VERIFIER_nondet_uchar() [L152] input_151 = input_151 & mask_SORT_1 [L153] input_152 = __VERIFIER_nondet_uchar() [L154] input_152 = input_152 & mask_SORT_1 [L155] input_153 = __VERIFIER_nondet_uchar() [L156] input_153 = input_153 & mask_SORT_1 [L157] input_161 = __VERIFIER_nondet_uchar() [L158] input_161 = input_161 & mask_SORT_1 [L159] input_167 = __VERIFIER_nondet_uchar() [L160] input_167 = input_167 & mask_SORT_1 [L161] input_173 = __VERIFIER_nondet_uchar() [L162] input_173 = input_173 & mask_SORT_1 [L163] input_188 = __VERIFIER_nondet_uchar() [L164] input_206 = __VERIFIER_nondet_uchar() [L165] input_224 = __VERIFIER_nondet_uchar() [L168] SORT_1 var_55_arg_0 = state_29; [L169] SORT_4 var_55_arg_1 = var_53; [L170] SORT_4 var_55_arg_2 = var_54; [L171] SORT_4 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L172] SORT_1 var_56_arg_0 = state_39; [L173] SORT_4 var_56_arg_1 = var_53; [L174] SORT_4 var_56_arg_2 = var_54; [L175] SORT_4 var_56 = var_56_arg_0 ? var_56_arg_1 : var_56_arg_2; [L176] SORT_4 var_57_arg_0 = var_55; [L177] SORT_4 var_57_arg_1 = var_56; [L178] SORT_4 var_57 = var_57_arg_0 + var_57_arg_1; [L179] SORT_1 var_58_arg_0 = state_49; [L180] SORT_4 var_58_arg_1 = var_53; [L181] SORT_4 var_58_arg_2 = var_54; [L182] SORT_4 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L183] SORT_4 var_59_arg_0 = var_57; [L184] SORT_4 var_59_arg_1 = var_58; [L185] SORT_4 var_59 = var_59_arg_0 + var_59_arg_1; [L186] var_59 = var_59 & mask_SORT_4 [L187] SORT_4 var_60_arg_0 = var_59; [L188] SORT_4 var_60_arg_1 = var_53; [L189] SORT_1 var_60 = var_60_arg_0 <= var_60_arg_1; [L190] SORT_1 var_61_arg_0 = ~state_51; [L191] var_61_arg_0 = var_61_arg_0 & mask_SORT_1 [L192] SORT_1 var_61_arg_1 = ~var_60; [L193] var_61_arg_1 = var_61_arg_1 & mask_SORT_1 [L194] SORT_1 var_61 = var_61_arg_0 & var_61_arg_1; [L195] var_61 = var_61 & mask_SORT_1 [L196] SORT_1 bad_62_arg_0 = var_61; [L197] CALL __VERIFIER_assert(!(bad_62_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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 15:10:31,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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_be3f4329-fb99-4317-82f0-602f641225e7/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 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 --- 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 15:10:32,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:10:32,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:10:32,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:10:32,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:10:32,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:10:32,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:10:32,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:10:32,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:10:32,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:10:32,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:10:32,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:10:32,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:10:32,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:10:32,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:10:32,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:10:32,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:10:32,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:10:32,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:10:32,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:10:32,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:10:32,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:10:32,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:10:32,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:10:32,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:10:32,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:10:32,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:10:32,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:10:32,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:10:32,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:10:32,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:10:32,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:10:32,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:10:32,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:10:32,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:10:32,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:10:32,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:10:32,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:10:32,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:10:32,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:10:32,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:10:32,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 15:10:32,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:10:32,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:10:32,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:10:32,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:10:32,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:10:32,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:10:32,877 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:10:32,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:10:32,877 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:10:32,878 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:10:32,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:10:32,878 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:10:32,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:10:32,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:10:32,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:10:32,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:10:32,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:10:32,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 15:10:32,879 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 15:10:32,880 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 15:10:32,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:10:32,880 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:10:32,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:10:32,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:10:32,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 15:10:32,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:10:32,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:10:32,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:10:32,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:10:32,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:10:32,882 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 15:10:32,882 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 15:10:32,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:10:32,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:10:32,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 15:10:32,883 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_be3f4329-fb99-4317-82f0-602f641225e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 [2022-12-14 15:10:33,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:10:33,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:10:33,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:10:33,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:10:33,127 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:10:33,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-12-14 15:10:35,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:10:35,965 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:10:35,966 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-12-14 15:10:35,978 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/data/1b21f6a11/39bf0a26a40142f49107b5096a3bb47f/FLAG615a9a92b [2022-12-14 15:10:35,992 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/data/1b21f6a11/39bf0a26a40142f49107b5096a3bb47f [2022-12-14 15:10:35,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:10:35,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:10:35,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:10:35,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:10:35,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:10:36,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:10:35" (1/1) ... [2022-12-14 15:10:36,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185fa098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36, skipping insertion in model container [2022-12-14 15:10:36,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:10:35" (1/1) ... [2022-12-14 15:10:36,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:10:36,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:10:36,179 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_be3f4329-fb99-4317-82f0-602f641225e7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-12-14 15:10:36,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:10:36,355 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:10:36,363 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_be3f4329-fb99-4317-82f0-602f641225e7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-12-14 15:10:36,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:10:36,434 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:10:36,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36 WrapperNode [2022-12-14 15:10:36,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:10:36,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:10:36,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:10:36,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:10:36,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,499 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1323 [2022-12-14 15:10:36,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:10:36,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:10:36,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:10:36,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:10:36,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,539 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:10:36,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:10:36,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:10:36,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:10:36,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (1/1) ... [2022-12-14 15:10:36,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:10:36,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:10:36,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:10:36,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:10:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:10:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:10:36,897 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:10:36,899 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:10:38,667 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:10:38,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:10:38,673 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:10:38,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:10:38 BoogieIcfgContainer [2022-12-14 15:10:38,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:10:38,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:10:38,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:10:38,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:10:38,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:10:35" (1/3) ... [2022-12-14 15:10:38,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1223ad75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:10:38, skipping insertion in model container [2022-12-14 15:10:38,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:36" (2/3) ... [2022-12-14 15:10:38,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1223ad75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:10:38, skipping insertion in model container [2022-12-14 15:10:38,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:10:38" (3/3) ... [2022-12-14 15:10:38,682 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-12-14 15:10:38,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:10:38,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:10:38,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:10:38,734 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;@5c2e02f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:10:38,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:10:38,737 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 15:10:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:10:38,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:10:38,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:10:38,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:10:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:10:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 15:10:38,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:10:38,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852645903] [2022-12-14 15:10:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:10:38,755 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 15:10:38,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:10:38,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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 15:10:38,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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 15:10:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:10:38,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 15:10:38,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:10:39,175 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 15:10:39,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:10:39,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:10:39,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852645903] [2022-12-14 15:10:39,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852645903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:10:39,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:10:39,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:10:39,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354974096] [2022-12-14 15:10:39,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:10:39,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:10:39,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:10:39,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:10:39,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:10:39,206 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 15:10:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:10:39,562 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 15:10:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:10:39,565 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 15:10:39,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:10:39,571 INFO L225 Difference]: With dead ends: 20 [2022-12-14 15:10:39,571 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 15:10:39,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:10:39,576 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:10:39,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:10:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 15:10:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 15:10:39,598 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 15:10:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 15:10:39,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 15:10:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:10:39,600 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 15:10:39,600 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 15:10:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 15:10:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:10:39,600 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:10:39,600 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 15:10:39,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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 15:10:39,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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 15:10:39,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:10:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:10:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 15:10:39,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:10:39,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905638207] [2022-12-14 15:10:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:10:39,813 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 15:10:39,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:10:39,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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 15:10:39,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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 15:10:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:10:41,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-14 15:10:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:10:42,141 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 15:10:42,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:11:01,357 WARN L233 SmtUtils]: Spent 17.24s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:11:01,746 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 15:11:01,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:11:01,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905638207] [2022-12-14 15:11:01,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905638207] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:11:01,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [719546706] [2022-12-14 15:11:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:11:01,747 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:11:01,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:11:01,748 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:11:01,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 15:11:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:11:03,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 113 conjunts are in the unsatisfiable core [2022-12-14 15:11:03,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:11:04,335 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 15:11:04,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:11:36,346 WARN L233 SmtUtils]: Spent 29.39s on a formula simplification. DAG size of input: 85 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:13:23,338 WARN L233 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 253 DAG size of output: 247 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:13:24,016 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 15:13:24,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [719546706] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:13:24,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241426896] [2022-12-14 15:13:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:13:24,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:13:24,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:13:24,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:13:24,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:13:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:13:24,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 116 conjunts are in the unsatisfiable core [2022-12-14 15:13:24,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:13:25,619 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 15:13:25,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:15:21,738 WARN L233 SmtUtils]: Spent 1.71m on a formula simplification. DAG size of input: 253 DAG size of output: 247 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:16:18,182 WARN L233 SmtUtils]: Spent 50.64s on a formula simplification that was a NOOP. DAG size: 251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:16:18,563 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 15:16:18,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241426896] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:16:18,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 15:16:18,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2022-12-14 15:16:18,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615255411] [2022-12-14 15:16:18,565 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 15:16:18,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 15:16:18,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:16:18,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 15:16:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=145, Unknown=9, NotChecked=0, Total=210 [2022-12-14 15:16:18,567 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:16:26,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:16:26,306 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 15:16:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 15:16:26,307 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 15:16:26,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:16:26,307 INFO L225 Difference]: With dead ends: 16 [2022-12-14 15:16:26,307 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 15:16:26,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 333.6s TimeCoverageRelationStatistics Valid=91, Invalid=204, Unknown=11, NotChecked=0, Total=306 [2022-12-14 15:16:26,308 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 15:16:26,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 26 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 15:16:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 15:16:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 15:16:26,311 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 15:16:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 15:16:26,312 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 15:16:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:16:26,312 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 15:16:26,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:16:26,312 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 15:16:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:16:26,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:16:26,313 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 15:16:26,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 15:16:26,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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 15:16:26,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:16:26,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:16:26,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:16:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:16:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 15:16:26,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:16:26,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335035870] [2022-12-14 15:16:26,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:16:26,924 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 15:16:26,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:16:26,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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 15:16:26,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/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 15:16:29,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:16:29,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:16:29,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 236 conjunts are in the unsatisfiable core [2022-12-14 15:16:29,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:16:33,703 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 15:16:33,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:18:10,381 WARN L233 SmtUtils]: Spent 1.49m on a formula simplification that was a NOOP. DAG size: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:20:11,260 WARN L233 SmtUtils]: Spent 1.74m on a formula simplification that was a NOOP. DAG size: 2592 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:20:15,532 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 15:20:15,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:20:15,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335035870] [2022-12-14 15:20:15,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335035870] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:20:15,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1783505769] [2022-12-14 15:20:15,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:20:15,533 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:20:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:20:15,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:20:15,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be3f4329-fb99-4317-82f0-602f641225e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 15:20:17,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:20:17,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:20:17,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 15:20:17,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:20:27,998 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 15:20:27,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:21:52,721 WARN L233 SmtUtils]: Spent 1.33m on a formula simplification. DAG size of input: 100 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:22:56,031 WARN L233 SmtUtils]: Spent 51.42s on a formula simplification that was a NOOP. DAG size: 233 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)