./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.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_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/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_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/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_a0388a0e-36b3-4223-b766-8ff734170d40/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 ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:46:32,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:46:32,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:46:32,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:46:32,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:46:32,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:46:32,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:46:32,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:46:32,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:46:32,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:46:32,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:46:32,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:46:32,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:46:32,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:46:32,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:46:32,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:46:32,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:46:32,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:46:32,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:46:32,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:46:32,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:46:32,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:46:32,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:46:32,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:46:32,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:46:32,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:46:32,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:46:32,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:46:32,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:46:32,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:46:32,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:46:32,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:46:32,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:46:32,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:46:32,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:46:32,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:46:32,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:46:32,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:46:32,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:46:32,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:46:32,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:46:32,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 08:46:32,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:46:32,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:46:32,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:46:32,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:46:32,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:46:32,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:46:32,458 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:46:32,458 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:46:32,458 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:46:32,458 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:46:32,458 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:46:32,458 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:46:32,458 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:46:32,459 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:46:32,459 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:46:32,459 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:46:32,459 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:46:32,459 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:46:32,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:46:32,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:46:32,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:46:32,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:46:32,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:46:32,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:46:32,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:46:32,460 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:46:32,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:46:32,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:46:32,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:46:32,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:46:32,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:46:32,461 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:46:32,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:46:32,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:46:32,461 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:46:32,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:46:32,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:46:32,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:46:32,462 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_a0388a0e-36b3-4223-b766-8ff734170d40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e [2022-12-14 08:46:32,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:46:32,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:46:32,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:46:32,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:46:32,654 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:46:32,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-12-14 08:46:35,250 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:46:35,445 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:46:35,445 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-12-14 08:46:35,454 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/data/7136a42e5/22ae0c4aad5849948fa4a8f1e049670f/FLAG853208be3 [2022-12-14 08:46:35,824 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/data/7136a42e5/22ae0c4aad5849948fa4a8f1e049670f [2022-12-14 08:46:35,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:46:35,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:46:35,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:46:35,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:46:35,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:46:35,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:46:35" (1/1) ... [2022-12-14 08:46:35,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b7029e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:35, skipping insertion in model container [2022-12-14 08:46:35,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:46:35" (1/1) ... [2022-12-14 08:46:35,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:46:35,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:46:35,994 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_a0388a0e-36b3-4223-b766-8ff734170d40/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-12-14 08:46:36,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:46:36,125 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:46:36,133 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_a0388a0e-36b3-4223-b766-8ff734170d40/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-12-14 08:46:36,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:46:36,224 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:46:36,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36 WrapperNode [2022-12-14 08:46:36,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:46:36,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:46:36,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:46:36,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:46:36,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,296 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 978 [2022-12-14 08:46:36,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:46:36,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:46:36,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:46:36,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:46:36,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,346 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:46:36,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:46:36,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:46:36,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:46:36,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (1/1) ... [2022-12-14 08:46:36,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:46:36,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:46:36,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:46:36,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:46:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:46:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:46:36,638 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:46:36,640 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:46:41,347 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:46:41,364 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:46:41,364 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:46:41,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:46:41 BoogieIcfgContainer [2022-12-14 08:46:41,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:46:41,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:46:41,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:46:41,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:46:41,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:46:35" (1/3) ... [2022-12-14 08:46:41,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28df5550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:46:41, skipping insertion in model container [2022-12-14 08:46:41,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:36" (2/3) ... [2022-12-14 08:46:41,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28df5550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:46:41, skipping insertion in model container [2022-12-14 08:46:41,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:46:41" (3/3) ... [2022-12-14 08:46:41,372 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2022-12-14 08:46:41,385 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:46:41,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:46:41,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:46:41,423 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;@388214f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:46:41,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:46:41,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 08:46:41,430 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:41,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 08:46:41,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 08:46:41,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:41,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558273750] [2022-12-14 08:46:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:41,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:46:41,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:46:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:46:41,795 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:46:41,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:46:41,798 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 08:46:41,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:46:41,803 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 08:46:41,806 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:46:41,824 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 08:46:41,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:46:41 BoogieIcfgContainer [2022-12-14 08:46:41,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:46:41,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:46:41,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:46:41,833 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:46:41,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:46:41" (3/4) ... [2022-12-14 08:46:41,835 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:46:41,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:46:41,836 INFO L158 Benchmark]: Toolchain (without parser) took 6009.29ms. Allocated memory was 136.3MB in the beginning and 385.9MB in the end (delta: 249.6MB). Free memory was 103.7MB in the beginning and 201.6MB in the end (delta: -97.9MB). Peak memory consumption was 153.2MB. Max. memory is 16.1GB. [2022-12-14 08:46:41,837 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory was 102.3MB in the beginning and 102.3MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:46:41,837 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.11ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 72.5MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 08:46:41,838 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.35ms. Allocated memory is still 136.3MB. Free memory was 72.5MB in the beginning and 64.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 08:46:41,838 INFO L158 Benchmark]: Boogie Preprocessor took 63.79ms. Allocated memory is still 136.3MB. Free memory was 64.1MB in the beginning and 59.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 08:46:41,838 INFO L158 Benchmark]: RCFGBuilder took 5003.73ms. Allocated memory was 136.3MB in the beginning and 385.9MB in the end (delta: 249.6MB). Free memory was 59.9MB in the beginning and 255.1MB in the end (delta: -195.2MB). Peak memory consumption was 197.2MB. Max. memory is 16.1GB. [2022-12-14 08:46:41,839 INFO L158 Benchmark]: TraceAbstraction took 464.93ms. Allocated memory is still 385.9MB. Free memory was 254.0MB in the beginning and 201.6MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-12-14 08:46:41,839 INFO L158 Benchmark]: Witness Printer took 3.02ms. Allocated memory is still 385.9MB. Free memory is still 201.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:46:41,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory was 102.3MB in the beginning and 102.3MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.11ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 72.5MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.35ms. Allocated memory is still 136.3MB. Free memory was 72.5MB in the beginning and 64.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.79ms. Allocated memory is still 136.3MB. Free memory was 64.1MB in the beginning and 59.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 5003.73ms. Allocated memory was 136.3MB in the beginning and 385.9MB in the end (delta: 249.6MB). Free memory was 59.9MB in the beginning and 255.1MB in the end (delta: -195.2MB). Peak memory consumption was 197.2MB. Max. memory is 16.1GB. * TraceAbstraction took 464.93ms. Allocated memory is still 385.9MB. Free memory was 254.0MB in the beginning and 201.6MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 3.02ms. Allocated memory is still 385.9MB. Free memory is still 201.6MB. 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 295, overapproximation of bitwiseOr at line 298, overapproximation of bitwiseAnd at line 222. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 8); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (8 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L37] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 32); [L38] const SORT_20 msb_SORT_20 = (SORT_20)1 << (32 - 1); [L40] const SORT_51 mask_SORT_51 = (SORT_51)-1 >> (sizeof(SORT_51) * 8 - 6); [L41] const SORT_51 msb_SORT_51 = (SORT_51)1 << (6 - 1); [L43] const SORT_66 mask_SORT_66 = (SORT_66)-1 >> (sizeof(SORT_66) * 8 - 25); [L44] const SORT_66 msb_SORT_66 = (SORT_66)1 << (25 - 1); [L46] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 7); [L47] const SORT_68 msb_SORT_68 = (SORT_68)1 << (7 - 1); [L49] const SORT_88 mask_SORT_88 = (SORT_88)-1 >> (sizeof(SORT_88) * 8 - 2); [L50] const SORT_88 msb_SORT_88 = (SORT_88)1 << (2 - 1); [L52] const SORT_126 mask_SORT_126 = (SORT_126)-1 >> (sizeof(SORT_126) * 8 - 3); [L53] const SORT_126 msb_SORT_126 = (SORT_126)1 << (3 - 1); [L55] const SORT_1 var_17 = 0; [L56] const SORT_20 var_22 = 1; [L57] const SORT_1 var_47 = 1; [L58] const SORT_51 var_52 = 0; [L59] const SORT_5 var_56 = 0; [L60] const SORT_5 var_61 = 2; [L61] const SORT_20 var_63 = 2; [L62] const SORT_66 var_67 = 0; [L63] const SORT_20 var_116 = 0; [L64] const SORT_51 var_254 = 33; [L65] const SORT_5 var_273 = 1; [L67] SORT_1 input_2; [L68] SORT_3 input_4; [L69] SORT_5 input_6; [L70] SORT_7 input_8; [L71] SORT_1 input_9; [L72] SORT_1 input_10; [L73] SORT_1 input_11; [L74] SORT_1 input_12; [L75] SORT_7 input_13; [L76] SORT_1 input_14; [L77] SORT_1 input_15; [L78] SORT_1 input_16; [L79] SORT_1 input_80; [L80] SORT_88 input_89; [L81] SORT_1 input_91; [L82] SORT_1 input_93; [L83] SORT_1 input_95; [L84] SORT_1 input_99; [L85] SORT_1 input_103; [L86] SORT_1 input_105; [L87] SORT_1 input_109; [L88] SORT_1 input_138; [L89] SORT_1 input_144; [L90] SORT_1 input_153; [L91] SORT_1 input_155; [L92] SORT_1 input_157; [L93] SORT_7 input_166; [L94] SORT_1 input_168; [L95] SORT_3 input_170; [L96] SORT_5 input_172; [L97] SORT_1 input_183; [L98] SORT_1 input_185; [L99] SORT_1 input_198; [L100] SORT_1 input_200; [L101] SORT_1 input_203; [L102] SORT_1 input_210; [L103] SORT_1 input_212; [L104] SORT_1 input_215; [L105] SORT_1 input_220; [L106] SORT_1 input_228; [L107] SORT_1 input_229; [L108] SORT_1 input_231; [L109] SORT_1 input_234; [L110] SORT_1 input_238; [L111] SORT_1 input_241; [L112] SORT_1 input_246; [L113] SORT_51 input_250; [L114] SORT_51 input_251; [L115] SORT_51 input_258; [L116] SORT_51 input_262; [L117] SORT_51 input_266; [L118] SORT_51 input_269; [L119] SORT_5 input_276; [L120] SORT_1 input_283; [L121] SORT_1 input_288; [L122] SORT_1 input_293; [L123] SORT_1 input_300; [L124] SORT_1 input_308; [L125] SORT_1 input_312; [L126] SORT_1 input_313; [L127] SORT_1 input_315; [L128] SORT_1 input_318; [L129] SORT_1 input_320; [L130] SORT_1 input_321; [L131] SORT_1 input_326; [L132] SORT_1 input_330; [L133] SORT_1 input_333; [L134] SORT_1 input_338; [L135] SORT_1 input_343; [L136] SORT_1 input_352; [L137] SORT_1 input_357; [L139] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L140] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L141] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L142] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L143] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L144] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L145] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L146] SORT_51 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_51; [L147] SORT_5 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L148] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L149] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L150] SORT_1 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L151] SORT_1 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L152] SORT_1 state_101 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L153] SORT_1 state_107 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L154] SORT_1 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L155] SORT_1 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L156] SORT_1 state_142 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L157] SORT_1 state_146 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L158] SORT_1 state_148 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L159] SORT_1 state_174 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L160] SORT_1 state_176 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L161] SORT_1 state_187 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L162] SORT_1 state_189 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L164] SORT_1 init_19_arg_1 = var_17; [L165] state_18 = init_19_arg_1 [L166] SORT_1 init_26_arg_1 = var_17; [L167] state_25 = init_26_arg_1 [L168] SORT_1 init_28_arg_1 = var_17; [L169] state_27 = init_28_arg_1 [L170] SORT_1 init_31_arg_1 = var_17; [L171] state_30 = init_31_arg_1 [L172] SORT_1 init_34_arg_1 = var_17; [L173] state_33 = init_34_arg_1 [L174] SORT_1 init_37_arg_1 = var_17; [L175] state_36 = init_37_arg_1 [L176] SORT_1 init_40_arg_1 = var_17; [L177] state_39 = init_40_arg_1 [L178] SORT_51 init_54_arg_1 = var_52; [L179] state_53 = init_54_arg_1 [L180] SORT_5 init_58_arg_1 = var_56; [L181] state_57 = init_58_arg_1 [L182] SORT_1 init_75_arg_1 = var_17; [L183] state_74 = init_75_arg_1 [L184] SORT_1 init_85_arg_1 = var_17; [L185] state_84 = init_85_arg_1 [L186] SORT_1 init_87_arg_1 = var_17; [L187] state_86 = init_87_arg_1 [L188] SORT_1 init_98_arg_1 = var_17; [L189] state_97 = init_98_arg_1 [L190] SORT_1 init_102_arg_1 = var_17; [L191] state_101 = init_102_arg_1 [L192] SORT_1 init_108_arg_1 = var_17; [L193] state_107 = init_108_arg_1 [L194] SORT_1 init_112_arg_1 = var_17; [L195] state_111 = init_112_arg_1 [L196] SORT_1 init_141_arg_1 = var_17; [L197] state_140 = init_141_arg_1 [L198] SORT_1 init_143_arg_1 = var_17; [L199] state_142 = init_143_arg_1 [L200] SORT_1 init_147_arg_1 = var_17; [L201] state_146 = init_147_arg_1 [L202] SORT_1 init_149_arg_1 = var_17; [L203] state_148 = init_149_arg_1 [L204] SORT_1 init_175_arg_1 = var_17; [L205] state_174 = init_175_arg_1 [L206] SORT_1 init_177_arg_1 = var_17; [L207] state_176 = init_177_arg_1 [L208] SORT_1 init_188_arg_1 = var_17; [L209] state_187 = init_188_arg_1 [L210] SORT_1 init_190_arg_1 = var_17; [L211] state_189 = init_190_arg_1 VAL [init_102_arg_1=0, init_108_arg_1=0, init_112_arg_1=0, init_141_arg_1=0, init_143_arg_1=0, init_147_arg_1=0, init_149_arg_1=0, init_175_arg_1=0, init_177_arg_1=0, init_188_arg_1=0, init_190_arg_1=0, init_19_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_54_arg_1=0, init_58_arg_1=0, init_75_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_98_arg_1=0, mask_SORT_1=1, mask_SORT_126=7, mask_SORT_20=4294967295, mask_SORT_3=65535, mask_SORT_5=255, mask_SORT_51=63, mask_SORT_66=4294967295, mask_SORT_68=127, mask_SORT_7=31, mask_SORT_88=3, msb_SORT_1=1, msb_SORT_126=4, msb_SORT_20=2147483648, msb_SORT_3=32768, msb_SORT_5=128, msb_SORT_51=32, msb_SORT_66=16777216, msb_SORT_68=64, msb_SORT_7=16, msb_SORT_88=2, state_101=0, state_107=0, state_111=0, state_140=0, state_142=0, state_146=0, state_148=0, state_174=0, state_176=0, state_18=0, state_187=0, state_189=0, state_25=0, state_27=0, state_30=0, state_33=0, state_36=0, state_39=0, state_53=0, state_57=0, state_74=0, state_84=0, state_86=0, state_97=0, var_116=0, var_17=0, var_22=1, var_254=33, var_273=1, var_47=1, var_52=0, var_56=0, var_61=2, var_63=2, var_67=0] [L214] input_2 = __VERIFIER_nondet_uchar() [L215] input_4 = __VERIFIER_nondet_ushort() [L216] input_6 = __VERIFIER_nondet_uchar() [L217] input_8 = __VERIFIER_nondet_uchar() [L218] input_9 = __VERIFIER_nondet_uchar() [L219] input_10 = __VERIFIER_nondet_uchar() [L220] input_11 = __VERIFIER_nondet_uchar() [L221] input_12 = __VERIFIER_nondet_uchar() [L222] input_12 = input_12 & mask_SORT_1 [L223] input_13 = __VERIFIER_nondet_uchar() [L224] input_14 = __VERIFIER_nondet_uchar() [L225] input_15 = __VERIFIER_nondet_uchar() [L226] input_16 = __VERIFIER_nondet_uchar() [L227] input_80 = __VERIFIER_nondet_uchar() [L228] input_89 = __VERIFIER_nondet_uchar() [L229] input_91 = __VERIFIER_nondet_uchar() [L230] input_93 = __VERIFIER_nondet_uchar() [L231] input_95 = __VERIFIER_nondet_uchar() [L232] input_99 = __VERIFIER_nondet_uchar() [L233] input_103 = __VERIFIER_nondet_uchar() [L234] input_105 = __VERIFIER_nondet_uchar() [L235] input_109 = __VERIFIER_nondet_uchar() [L236] input_138 = __VERIFIER_nondet_uchar() [L237] input_144 = __VERIFIER_nondet_uchar() [L238] input_153 = __VERIFIER_nondet_uchar() [L239] input_155 = __VERIFIER_nondet_uchar() [L240] input_157 = __VERIFIER_nondet_uchar() [L241] input_166 = __VERIFIER_nondet_uchar() [L242] input_168 = __VERIFIER_nondet_uchar() [L243] input_170 = __VERIFIER_nondet_ushort() [L244] input_172 = __VERIFIER_nondet_uchar() [L245] input_183 = __VERIFIER_nondet_uchar() [L246] input_185 = __VERIFIER_nondet_uchar() [L247] input_198 = __VERIFIER_nondet_uchar() [L248] input_200 = __VERIFIER_nondet_uchar() [L249] input_203 = __VERIFIER_nondet_uchar() [L250] input_210 = __VERIFIER_nondet_uchar() [L251] input_212 = __VERIFIER_nondet_uchar() [L252] input_215 = __VERIFIER_nondet_uchar() [L253] input_220 = __VERIFIER_nondet_uchar() [L254] input_228 = __VERIFIER_nondet_uchar() [L255] input_229 = __VERIFIER_nondet_uchar() [L256] input_231 = __VERIFIER_nondet_uchar() [L257] input_234 = __VERIFIER_nondet_uchar() [L258] input_238 = __VERIFIER_nondet_uchar() [L259] input_241 = __VERIFIER_nondet_uchar() [L260] input_246 = __VERIFIER_nondet_uchar() [L261] input_250 = __VERIFIER_nondet_uchar() [L262] input_251 = __VERIFIER_nondet_uchar() [L263] input_258 = __VERIFIER_nondet_uchar() [L264] input_262 = __VERIFIER_nondet_uchar() [L265] input_266 = __VERIFIER_nondet_uchar() [L266] input_269 = __VERIFIER_nondet_uchar() [L267] input_276 = __VERIFIER_nondet_uchar() [L268] input_283 = __VERIFIER_nondet_uchar() [L269] input_288 = __VERIFIER_nondet_uchar() [L270] input_293 = __VERIFIER_nondet_uchar() [L271] input_300 = __VERIFIER_nondet_uchar() [L272] input_308 = __VERIFIER_nondet_uchar() [L273] input_312 = __VERIFIER_nondet_uchar() [L274] input_313 = __VERIFIER_nondet_uchar() [L275] input_315 = __VERIFIER_nondet_uchar() [L276] input_318 = __VERIFIER_nondet_uchar() [L277] input_320 = __VERIFIER_nondet_uchar() [L278] input_321 = __VERIFIER_nondet_uchar() [L279] input_326 = __VERIFIER_nondet_uchar() [L280] input_330 = __VERIFIER_nondet_uchar() [L281] input_333 = __VERIFIER_nondet_uchar() [L282] input_338 = __VERIFIER_nondet_uchar() [L283] input_343 = __VERIFIER_nondet_uchar() [L284] input_352 = __VERIFIER_nondet_uchar() [L285] input_357 = __VERIFIER_nondet_uchar() [L288] SORT_1 var_21_arg_0 = state_18; [L289] var_21_arg_0 = var_21_arg_0 & mask_SORT_1 [L290] SORT_20 var_21 = var_21_arg_0; [L291] SORT_20 var_23_arg_0 = var_21; [L292] SORT_20 var_23_arg_1 = var_22; [L293] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L294] SORT_1 var_24_arg_0 = var_23; [L295] SORT_1 var_24 = ~var_24_arg_0; [L296] SORT_1 var_29_arg_0 = state_25; [L297] SORT_1 var_29_arg_1 = state_27; [L298] SORT_1 var_29 = var_29_arg_0 | var_29_arg_1; [L299] SORT_1 var_32_arg_0 = var_29; [L300] SORT_1 var_32_arg_1 = state_30; [L301] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L302] SORT_1 var_35_arg_0 = var_32; [L303] SORT_1 var_35_arg_1 = state_33; [L304] SORT_1 var_35 = var_35_arg_0 | var_35_arg_1; [L305] SORT_1 var_38_arg_0 = var_35; [L306] SORT_1 var_38_arg_1 = state_36; [L307] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L308] SORT_1 var_41_arg_0 = var_38; [L309] SORT_1 var_41_arg_1 = state_39; [L310] SORT_1 var_41 = var_41_arg_0 | var_41_arg_1; [L311] SORT_1 var_42_arg_0 = var_41; [L312] var_42_arg_0 = var_42_arg_0 & mask_SORT_1 [L313] SORT_20 var_42 = var_42_arg_0; [L314] SORT_20 var_43_arg_0 = var_42; [L315] SORT_20 var_43_arg_1 = var_22; [L316] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L317] SORT_1 var_44_arg_0 = var_24; [L318] SORT_1 var_44_arg_1 = var_43; [L319] SORT_1 var_44 = var_44_arg_0 | var_44_arg_1; [L320] SORT_1 var_48_arg_0 = var_44; [L321] SORT_1 var_48 = ~var_48_arg_0; [L322] SORT_1 var_49_arg_0 = var_47; [L323] SORT_1 var_49_arg_1 = var_48; [L324] SORT_1 var_49 = var_49_arg_0 & var_49_arg_1; [L325] var_49 = var_49 & mask_SORT_1 [L326] SORT_1 bad_50_arg_0 = var_49; [L327] CALL __VERIFIER_assert(!(bad_50_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 08:46:41,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/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_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/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_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/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_a0388a0e-36b3-4223-b766-8ff734170d40/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 ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:46:43,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:46:43,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:46:43,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:46:43,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:46:43,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:46:43,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:46:43,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:46:43,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:46:43,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:46:43,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:46:43,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:46:43,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:46:43,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:46:43,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:46:43,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:46:43,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:46:43,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:46:43,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:46:43,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:46:43,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:46:43,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:46:43,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:46:43,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:46:43,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:46:43,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:46:43,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:46:43,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:46:43,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:46:43,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:46:43,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:46:43,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:46:43,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:46:43,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:46:43,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:46:43,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:46:43,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:46:43,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:46:43,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:46:43,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:46:43,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:46:43,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 08:46:43,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:46:43,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:46:43,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:46:43,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:46:43,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:46:43,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:46:43,633 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:46:43,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:46:43,633 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:46:43,633 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:46:43,634 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:46:43,634 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:46:43,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:46:43,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:46:43,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:46:43,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:46:43,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:46:43,636 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:46:43,636 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:46:43,636 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:46:43,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:46:43,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:46:43,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:46:43,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:46:43,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:46:43,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:46:43,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:46:43,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:46:43,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:46:43,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:46:43,638 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:46:43,638 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:46:43,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:46:43,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:46:43,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:46:43,639 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_a0388a0e-36b3-4223-b766-8ff734170d40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e [2022-12-14 08:46:43,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:46:43,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:46:43,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:46:43,867 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:46:43,868 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:46:43,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-12-14 08:46:46,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:46:46,632 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:46:46,632 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-12-14 08:46:46,640 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/data/827a3b5ca/544739e24cc34da2b66574ed447c50d7/FLAGf8d0fe2e2 [2022-12-14 08:46:46,651 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/data/827a3b5ca/544739e24cc34da2b66574ed447c50d7 [2022-12-14 08:46:46,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:46:46,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:46:46,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:46:46,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:46:46,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:46:46,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:46:46" (1/1) ... [2022-12-14 08:46:46,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d038e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:46, skipping insertion in model container [2022-12-14 08:46:46,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:46:46" (1/1) ... [2022-12-14 08:46:46,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:46:46,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:46:46,799 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_a0388a0e-36b3-4223-b766-8ff734170d40/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-12-14 08:46:46,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:46:46,960 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:46:46,970 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_a0388a0e-36b3-4223-b766-8ff734170d40/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-12-14 08:46:47,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:46:47,060 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:46:47,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47 WrapperNode [2022-12-14 08:46:47,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:46:47,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:46:47,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:46:47,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:46:47,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,135 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 978 [2022-12-14 08:46:47,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:46:47,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:46:47,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:46:47,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:46:47,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,183 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:46:47,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:46:47,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:46:47,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:46:47,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (1/1) ... [2022-12-14 08:46:47,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:46:47,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:46:47,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:46:47,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:46:47,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:46:47,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:46:47,451 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:46:47,453 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:46:48,032 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:46:48,037 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:46:48,037 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:46:48,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:46:48 BoogieIcfgContainer [2022-12-14 08:46:48,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:46:48,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:46:48,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:46:48,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:46:48,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:46:46" (1/3) ... [2022-12-14 08:46:48,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90bcc71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:46:48, skipping insertion in model container [2022-12-14 08:46:48,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:47" (2/3) ... [2022-12-14 08:46:48,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90bcc71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:46:48, skipping insertion in model container [2022-12-14 08:46:48,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:46:48" (3/3) ... [2022-12-14 08:46:48,045 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2022-12-14 08:46:48,058 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:46:48,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:46:48,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:46:48,096 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;@5f06ade7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:46:48,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:46:48,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 08:46:48,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:48,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 08:46:48,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:48,109 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 08:46:48,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:46:48,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045429596] [2022-12-14 08:46:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:48,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:46:48,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:46:48,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:46:48,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 08:46:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:48,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 08:46:48,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:46:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:48,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:46:48,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:46:48,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045429596] [2022-12-14 08:46:48,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045429596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:48,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:48,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:46:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009470949] [2022-12-14 08:46:48,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:46:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:46:48,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:46:48,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:46:48,452 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:48,567 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 08:46:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:46:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 08:46:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:48,577 INFO L225 Difference]: With dead ends: 20 [2022-12-14 08:46:48,577 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 08:46:48,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:46:48,583 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:48,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:46:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 08:46:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 08:46:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 08:46:48,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 08:46:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:48,613 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 08:46:48,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 08:46:48,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:46:48,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:48,614 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:46:48,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:46:48,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:46:48,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 08:46:48,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:46:48,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203197486] [2022-12-14 08:46:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:48,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:46:48,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:46:48,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:46:48,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 08:46:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:49,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 08:46:49,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:46:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:49,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:46:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:49,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:46:49,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203197486] [2022-12-14 08:46:49,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203197486] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:46:49,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1757439416] [2022-12-14 08:46:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:49,599 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:46:49,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:46:49,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:46:49,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 08:46:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:50,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 08:46:50,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:46:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:50,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:46:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:50,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1757439416] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:46:50,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237284899] [2022-12-14 08:46:50,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:50,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:46:50,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:46:50,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:46:50,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:46:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:50,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 08:46:50,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:46:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:50,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:46:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:50,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237284899] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:46:50,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:46:50,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-12-14 08:46:50,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110481848] [2022-12-14 08:46:50,931 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:46:50,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 08:46:50,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:46:50,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 08:46:50,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 08:46:50,932 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:51,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:51,123 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 08:46:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:46:51,124 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 08:46:51,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:51,124 INFO L225 Difference]: With dead ends: 16 [2022-12-14 08:46:51,124 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 08:46:51,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:46:51,125 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:51,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:46:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 08:46:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 08:46:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 08:46:51,128 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 08:46:51,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:51,128 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 08:46:51,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 08:46:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:46:51,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:51,129 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 08:46:51,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 08:46:51,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 08:46:51,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:46:51,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:46:51,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:51,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:51,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 08:46:51,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:46:51,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809260550] [2022-12-14 08:46:51,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:46:51,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:46:51,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:46:51,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:46:51,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 08:46:52,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:46:52,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:46:52,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-14 08:46:52,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:46:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:52,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:46:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:55,631 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:46:55,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809260550] [2022-12-14 08:46:55,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809260550] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:46:55,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [91101961] [2022-12-14 08:46:55,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:46:55,632 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:46:55,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:46:55,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:46:55,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 08:46:56,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:46:56,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:46:56,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-14 08:46:56,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:46:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:56,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:46:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:57,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [91101961] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:46:57,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307460951] [2022-12-14 08:46:57,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:46:57,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:46:57,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:46:57,208 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:46:57,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:46:57,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:46:57,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:46:57,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-14 08:46:57,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:46:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:57,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:46:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:58,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307460951] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:46:58,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:46:58,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6, 6, 7, 7] total 16 [2022-12-14 08:46:58,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751999170] [2022-12-14 08:46:58,211 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:46:58,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 08:46:58,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:46:58,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 08:46:58,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=183, Unknown=1, NotChecked=0, Total=240 [2022-12-14 08:46:58,213 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:58,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:58,498 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-12-14 08:46:58,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 08:46:58,498 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 08:46:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:58,499 INFO L225 Difference]: With dead ends: 19 [2022-12-14 08:46:58,499 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 08:46:58,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=102, Invalid=277, Unknown=1, NotChecked=0, Total=380 [2022-12-14 08:46:58,500 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:58,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 25 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:46:58,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 08:46:58,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 08:46:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 08:46:58,503 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-12-14 08:46:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:58,503 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 08:46:58,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:46:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 08:46:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 08:46:58,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:58,504 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 08:46:58,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-12-14 08:46:58,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 08:46:58,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/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)] Forceful destruction successful, exit code 0 [2022-12-14 08:46:59,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:46:59,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-12-14 08:46:59,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:46:59,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118578686] [2022-12-14 08:46:59,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:46:59,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:46:59,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:46:59,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:46:59,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 08:46:59,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 08:46:59,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:46:59,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 160 conjunts are in the unsatisfiable core [2022-12-14 08:46:59,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:47:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:00,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:48:39,344 WARN L233 SmtUtils]: Spent 1.59m on a formula simplification. DAG size of input: 479 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:49:04,221 WARN L233 SmtUtils]: Spent 20.58s on a formula simplification. DAG size of input: 294 DAG size of output: 276 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:49:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:49:04,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:49:04,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118578686] [2022-12-14 08:49:04,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118578686] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:49:04,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [569124586] [2022-12-14 08:49:04,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:49:04,230 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:49:04,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:49:04,231 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:49:04,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 08:49:05,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 08:49:05,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:49:05,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 165 conjunts are in the unsatisfiable core [2022-12-14 08:49:05,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:49:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:49:06,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:50:26,575 WARN L233 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 469 DAG size of output: 281 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:50:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:50:26,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [569124586] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:50:26,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105711635] [2022-12-14 08:50:26,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:50:26,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:50:26,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:50:26,681 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:50:26,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 08:50:27,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 08:50:27,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:50:27,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 265 conjunts are in the unsatisfiable core [2022-12-14 08:50:27,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:50:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:50:29,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:27,444 WARN L233 SmtUtils]: Spent 1.67m on a formula simplification. DAG size of input: 461 DAG size of output: 300 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:52:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:52:35,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105711635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:52:35,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:52:35,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7, 7, 8, 8] total 21 [2022-12-14 08:52:35,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489332106] [2022-12-14 08:52:35,971 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:52:35,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 08:52:35,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:52:35,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 08:52:35,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=330, Unknown=19, NotChecked=0, Total=420 [2022-12-14 08:52:35,973 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:52:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:36,761 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-12-14 08:52:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 08:52:36,761 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 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 14 [2022-12-14 08:52:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:36,762 INFO L225 Difference]: With dead ends: 22 [2022-12-14 08:52:36,762 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 08:52:36,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 322.0s TimeCoverageRelationStatistics Valid=142, Invalid=489, Unknown=19, NotChecked=0, Total=650 [2022-12-14 08:52:36,763 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:36,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 42 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:52:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 08:52:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-14 08:52:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:52:36,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-12-14 08:52:36,768 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-12-14 08:52:36,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:36,768 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-12-14 08:52:36,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:52:36,769 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-12-14 08:52:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 08:52:36,769 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:36,769 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-12-14 08:52:36,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 08:52:36,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 08:52:37,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 08:52:37,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/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=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:52:37,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:37,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:37,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-12-14 08:52:37,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:52:37,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645833322] [2022-12-14 08:52:37,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 08:52:37,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:52:37,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:52:37,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:52:37,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0388a0e-36b3-4223-b766-8ff734170d40/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 08:52:38,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 08:52:38,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:52:38,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 385 conjunts are in the unsatisfiable core [2022-12-14 08:52:38,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:54:03,525 WARN L233 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 377 DAG size of output: 174 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:54:19,786 WARN L233 SmtUtils]: Spent 14.10s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:54:46,949 WARN L233 SmtUtils]: Spent 26.38s on a formula simplification. DAG size of input: 208 DAG size of output: 130 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:54:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:54:47,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:58:25,931 WARN L233 SmtUtils]: Spent 3.53m on a formula simplification. DAG size of input: 497 DAG size of output: 281 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)