./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.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_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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_81a36679-9db1-4e39-ae46-886701c63311/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 5cac0223dd723d5cf2812b282c3448409c51f83effd590c85b50f84f0401207a --- 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 05:46:36,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:46:36,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:46:36,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:46:36,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:46:36,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:46:36,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:46:36,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:46:36,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:46:36,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:46:36,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:46:36,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:46:36,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:46:36,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:46:36,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:46:36,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:46:36,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:46:36,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:46:36,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:46:36,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:46:36,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:46:36,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:46:36,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:46:36,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:46:36,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:46:36,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:46:36,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:46:36,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:46:36,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:46:36,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:46:36,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:46:36,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:46:36,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:46:36,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:46:36,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:46:36,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:46:36,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:46:36,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:46:36,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:46:36,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:46:36,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:46:36,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 05:46:36,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:46:36,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:46:36,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:46:36,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:46:36,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:46:36,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:46:36,458 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:46:36,458 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:46:36,458 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:46:36,458 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:46:36,458 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:46:36,458 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:46:36,459 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:46:36,459 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:46:36,459 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:46:36,459 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:46:36,459 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:46:36,460 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:46:36,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:46:36,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:46:36,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:46:36,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:46:36,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:46:36,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:46:36,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:46:36,461 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:46:36,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:46:36,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:46:36,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:46:36,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:46:36,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:46:36,463 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:46:36,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:46:36,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:46:36,463 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:46:36,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:46:36,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:46:36,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:46:36,464 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_81a36679-9db1-4e39-ae46-886701c63311/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cac0223dd723d5cf2812b282c3448409c51f83effd590c85b50f84f0401207a [2022-12-14 05:46:36,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:46:36,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:46:36,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:46:36,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:46:36,658 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:46:36,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c [2022-12-14 05:46:39,273 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:46:39,478 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:46:39,478 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c [2022-12-14 05:46:39,489 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/data/dc03f445f/c19c420c2eca4feaae554cc2c9f79635/FLAGdecf6f26b [2022-12-14 05:46:39,499 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/data/dc03f445f/c19c420c2eca4feaae554cc2c9f79635 [2022-12-14 05:46:39,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:46:39,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:46:39,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:46:39,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:46:39,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:46:39,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:46:39" (1/1) ... [2022-12-14 05:46:39,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f1d785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:39, skipping insertion in model container [2022-12-14 05:46:39,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:46:39" (1/1) ... [2022-12-14 05:46:39,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:46:39,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:46:39,692 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_81a36679-9db1-4e39-ae46-886701c63311/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c[1107,1120] [2022-12-14 05:46:39,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:46:39,901 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:46:39,909 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_81a36679-9db1-4e39-ae46-886701c63311/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c[1107,1120] [2022-12-14 05:46:40,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:46:40,013 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:46:40,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40 WrapperNode [2022-12-14 05:46:40,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:46:40,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:46:40,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:46:40,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:46:40,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,138 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1800 [2022-12-14 05:46:40,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:46:40,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:46:40,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:46:40,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:46:40,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,198 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:46:40,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:46:40,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:46:40,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:46:40,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (1/1) ... [2022-12-14 05:46:40,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:46:40,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:46:40,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:46:40,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:46:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:46:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:46:40,507 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:46:40,509 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:49:00,560 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:49:00,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:49:00,580 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:49:00,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:49:00 BoogieIcfgContainer [2022-12-14 05:49:00,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:49:00,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:49:00,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:49:00,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:49:00,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:46:39" (1/3) ... [2022-12-14 05:49:00,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f61c123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:49:00, skipping insertion in model container [2022-12-14 05:49:00,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:40" (2/3) ... [2022-12-14 05:49:00,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f61c123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:49:00, skipping insertion in model container [2022-12-14 05:49:00,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:49:00" (3/3) ... [2022-12-14 05:49:00,587 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p6.c [2022-12-14 05:49:00,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:49:00,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:49:00,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:49:00,638 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;@1a3e576f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:49:00,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:49:00,641 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 05:49:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 05:49:00,645 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:49:00,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 05:49:00,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:49:00,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:49:00,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 05:49:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:49:00,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740062705] [2022-12-14 05:49:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:49:00,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:49:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:49:00,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 05:49:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:49:00,949 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 05:49:00,950 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 05:49:00,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 05:49:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:49:00,956 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 05:49:00,959 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:49:00,974 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 05:49:00,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:49:00 BoogieIcfgContainer [2022-12-14 05:49:00,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:49:00,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:49:00,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:49:00,981 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:49:00,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:49:00" (3/4) ... [2022-12-14 05:49:00,984 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 05:49:00,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:49:00,985 INFO L158 Benchmark]: Toolchain (without parser) took 141482.35ms. Allocated memory was 153.1MB in the beginning and 880.8MB in the end (delta: 727.7MB). Free memory was 110.7MB in the beginning and 349.6MB in the end (delta: -238.8MB). Peak memory consumption was 492.5MB. Max. memory is 16.1GB. [2022-12-14 05:49:00,985 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 153.1MB. Free memory was 121.3MB in the beginning and 121.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:49:00,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.36ms. Allocated memory is still 153.1MB. Free memory was 110.7MB in the beginning and 52.5MB in the end (delta: 58.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-12-14 05:49:00,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 124.35ms. Allocated memory was 153.1MB in the beginning and 186.6MB in the end (delta: 33.6MB). Free memory was 52.5MB in the beginning and 135.5MB in the end (delta: -83.0MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2022-12-14 05:49:00,986 INFO L158 Benchmark]: Boogie Preprocessor took 79.25ms. Allocated memory is still 186.6MB. Free memory was 135.5MB in the beginning and 126.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:49:00,987 INFO L158 Benchmark]: RCFGBuilder took 140363.27ms. Allocated memory was 186.6MB in the beginning and 880.8MB in the end (delta: 694.2MB). Free memory was 126.0MB in the beginning and 401.0MB in the end (delta: -274.9MB). Peak memory consumption was 528.3MB. Max. memory is 16.1GB. [2022-12-14 05:49:00,987 INFO L158 Benchmark]: TraceAbstraction took 397.17ms. Allocated memory is still 880.8MB. Free memory was 399.9MB in the beginning and 349.6MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-12-14 05:49:00,987 INFO L158 Benchmark]: Witness Printer took 3.23ms. Allocated memory is still 880.8MB. Free memory was 349.6MB in the beginning and 349.6MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:49:00,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 153.1MB. Free memory was 121.3MB in the beginning and 121.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 510.36ms. Allocated memory is still 153.1MB. Free memory was 110.7MB in the beginning and 52.5MB in the end (delta: 58.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 124.35ms. Allocated memory was 153.1MB in the beginning and 186.6MB in the end (delta: 33.6MB). Free memory was 52.5MB in the beginning and 135.5MB in the end (delta: -83.0MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.25ms. Allocated memory is still 186.6MB. Free memory was 135.5MB in the beginning and 126.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 140363.27ms. Allocated memory was 186.6MB in the beginning and 880.8MB in the end (delta: 694.2MB). Free memory was 126.0MB in the beginning and 401.0MB in the end (delta: -274.9MB). Peak memory consumption was 528.3MB. Max. memory is 16.1GB. * TraceAbstraction took 397.17ms. Allocated memory is still 880.8MB. Free memory was 399.9MB in the beginning and 349.6MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 3.23ms. Allocated memory is still 880.8MB. Free memory was 349.6MB in the beginning and 349.6MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. 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 208, overapproximation of bitwiseOr at line 218, overapproximation of bitwiseAnd at line 182. 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_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 3); [L32] const SORT_9 msb_SORT_9 = (SORT_9)1 << (3 - 1); [L34] const SORT_17 mask_SORT_17 = (SORT_17)-1 >> (sizeof(SORT_17) * 8 - 2); [L35] const SORT_17 msb_SORT_17 = (SORT_17)1 << (2 - 1); [L37] const SORT_48 mask_SORT_48 = (SORT_48)-1 >> (sizeof(SORT_48) * 8 - 12); [L38] const SORT_48 msb_SORT_48 = (SORT_48)1 << (12 - 1); [L40] const SORT_85 mask_SORT_85 = (SORT_85)-1 >> (sizeof(SORT_85) * 8 - 17); [L41] const SORT_85 msb_SORT_85 = (SORT_85)1 << (17 - 1); [L43] const SORT_86 mask_SORT_86 = (SORT_86)-1 >> (sizeof(SORT_86) * 8 - 5); [L44] const SORT_86 msb_SORT_86 = (SORT_86)1 << (5 - 1); [L46] const SORT_89 mask_SORT_89 = (SORT_89)-1 >> (sizeof(SORT_89) * 8 - 9); [L47] const SORT_89 msb_SORT_89 = (SORT_89)1 << (9 - 1); [L49] const SORT_91 mask_SORT_91 = (SORT_91)-1 >> (sizeof(SORT_91) * 8 - 10); [L50] const SORT_91 msb_SORT_91 = (SORT_91)1 << (10 - 1); [L52] const SORT_94 mask_SORT_94 = (SORT_94)-1 >> (sizeof(SORT_94) * 8 - 11); [L53] const SORT_94 msb_SORT_94 = (SORT_94)1 << (11 - 1); [L55] const SORT_99 mask_SORT_99 = (SORT_99)-1 >> (sizeof(SORT_99) * 8 - 13); [L56] const SORT_99 msb_SORT_99 = (SORT_99)1 << (13 - 1); [L58] const SORT_102 mask_SORT_102 = (SORT_102)-1 >> (sizeof(SORT_102) * 8 - 14); [L59] const SORT_102 msb_SORT_102 = (SORT_102)1 << (14 - 1); [L61] const SORT_105 mask_SORT_105 = (SORT_105)-1 >> (sizeof(SORT_105) * 8 - 15); [L62] const SORT_105 msb_SORT_105 = (SORT_105)1 << (15 - 1); [L64] const SORT_138 mask_SORT_138 = (SORT_138)-1 >> (sizeof(SORT_138) * 8 - 7); [L65] const SORT_138 msb_SORT_138 = (SORT_138)1 << (7 - 1); [L67] const SORT_371 mask_SORT_371 = (SORT_371)-1 >> (sizeof(SORT_371) * 8 - 4); [L68] const SORT_371 msb_SORT_371 = (SORT_371)1 << (4 - 1); [L70] const SORT_374 mask_SORT_374 = (SORT_374)-1 >> (sizeof(SORT_374) * 8 - 6); [L71] const SORT_374 msb_SORT_374 = (SORT_374)1 << (6 - 1); [L73] const SORT_377 mask_SORT_377 = (SORT_377)-1 >> (sizeof(SORT_377) * 8 - 8); [L74] const SORT_377 msb_SORT_377 = (SORT_377)1 << (8 - 1); [L76] const SORT_3 var_6 = 0; [L77] const SORT_9 var_11 = 3; [L78] const SORT_9 var_14 = 4; [L79] const SORT_9 var_23 = 0; [L80] const SORT_1 var_35 = 1; [L81] const SORT_1 var_43 = 0; [L82] const SORT_48 var_49 = 0; [L83] const SORT_9 var_62 = 2; [L84] const SORT_9 var_66 = 1; [L85] const SORT_9 var_72 = 5; [L86] const SORT_86 var_87 = 0; [L87] const SORT_138 var_140 = 5; [L88] const SORT_138 var_144 = 4; [L89] const SORT_138 var_148 = 3; [L90] const SORT_138 var_152 = 2; [L91] const SORT_138 var_156 = 1; [L92] const SORT_138 var_160 = 0; [L93] const SORT_48 var_199 = 2; [L94] const SORT_17 var_215 = 0; [L95] const SORT_3 var_222 = 65535; [L97] SORT_1 input_2; [L98] SORT_3 input_4; [L99] SORT_3 input_5; [L100] SORT_3 input_211; [L101] SORT_3 input_212; [L102] SORT_3 input_213; [L103] SORT_3 input_221; [L104] SORT_3 input_229; [L105] SORT_3 input_230; [L106] SORT_3 input_231; [L107] SORT_3 input_234; [L108] SORT_3 input_252; [L109] SORT_3 input_253; [L110] SORT_3 input_254; [L111] SORT_3 input_257; [L112] SORT_3 input_259; [L113] SORT_17 input_273; [L114] SORT_17 input_274; [L115] SORT_17 input_275; [L117] SORT_3 state_7 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L118] SORT_9 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L119] SORT_3 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L120] SORT_3 state_39 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L121] SORT_3 state_41 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L122] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_3 state_46 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L124] SORT_48 state_50 = __VERIFIER_nondet_ushort() & mask_SORT_48; [L125] SORT_48 state_52 = __VERIFIER_nondet_ushort() & mask_SORT_48; [L126] SORT_3 state_54 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L127] SORT_3 state_56 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L128] SORT_3 state_58 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L129] SORT_3 state_60 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L131] SORT_3 init_8_arg_1 = var_6; [L132] state_7 = init_8_arg_1 [L133] SORT_9 init_25_arg_1 = var_23; [L134] state_24 = init_25_arg_1 [L135] SORT_3 init_29_arg_1 = var_6; [L136] state_28 = init_29_arg_1 [L137] SORT_3 init_40_arg_1 = var_6; [L138] state_39 = init_40_arg_1 [L139] SORT_3 init_42_arg_1 = var_6; [L140] state_41 = init_42_arg_1 [L141] SORT_1 init_45_arg_1 = var_43; [L142] state_44 = init_45_arg_1 [L143] SORT_3 init_47_arg_1 = var_6; [L144] state_46 = init_47_arg_1 [L145] SORT_48 init_51_arg_1 = var_49; [L146] state_50 = init_51_arg_1 [L147] SORT_48 init_53_arg_1 = var_49; [L148] state_52 = init_53_arg_1 [L149] SORT_3 init_55_arg_1 = var_6; [L150] state_54 = init_55_arg_1 [L151] SORT_3 init_57_arg_1 = var_6; [L152] state_56 = init_57_arg_1 [L153] SORT_3 init_59_arg_1 = var_6; [L154] state_58 = init_59_arg_1 [L155] SORT_3 init_61_arg_1 = var_6; [L156] state_60 = init_61_arg_1 VAL [init_25_arg_1=0, init_29_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_45_arg_1=0, init_47_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_59_arg_1=0, init_61_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_102=16383, mask_SORT_105=32767, mask_SORT_138=127, mask_SORT_17=3, mask_SORT_3=65535, mask_SORT_371=15, mask_SORT_374=63, mask_SORT_377=255, mask_SORT_48=4095, mask_SORT_85=4294967295, mask_SORT_86=31, mask_SORT_89=511, mask_SORT_9=7, mask_SORT_91=1023, mask_SORT_94=2047, mask_SORT_99=8191, msb_SORT_1=1, msb_SORT_102=8192, msb_SORT_105=16384, msb_SORT_138=64, msb_SORT_17=2, msb_SORT_3=32768, msb_SORT_371=8, msb_SORT_374=32, msb_SORT_377=128, msb_SORT_48=2048, msb_SORT_85=65536, msb_SORT_86=16, msb_SORT_89=256, msb_SORT_9=4, msb_SORT_91=512, msb_SORT_94=1024, msb_SORT_99=4096, state_24=0, state_28=0, state_39=0, state_41=0, state_44=0, state_46=0, state_50=0, state_52=0, state_54=0, state_56=0, state_58=0, state_60=0, state_7=0, var_11=3, var_14=4, var_140=5, var_144=4, var_148=3, var_152=2, var_156=1, var_160=0, var_199=2, var_215=0, var_222=65535, var_23=0, var_35=1, var_43=0, var_49=0, var_6=0, var_62=2, var_66=1, var_72=5, var_87=0] [L159] input_2 = __VERIFIER_nondet_uchar() [L160] input_4 = __VERIFIER_nondet_ushort() [L161] input_5 = __VERIFIER_nondet_ushort() [L162] input_211 = __VERIFIER_nondet_ushort() [L163] input_212 = __VERIFIER_nondet_ushort() [L164] input_213 = __VERIFIER_nondet_ushort() [L165] input_221 = __VERIFIER_nondet_ushort() [L166] input_229 = __VERIFIER_nondet_ushort() [L167] input_230 = __VERIFIER_nondet_ushort() [L168] input_231 = __VERIFIER_nondet_ushort() [L169] input_234 = __VERIFIER_nondet_ushort() [L170] input_252 = __VERIFIER_nondet_ushort() [L171] input_253 = __VERIFIER_nondet_ushort() [L172] input_254 = __VERIFIER_nondet_ushort() [L173] input_257 = __VERIFIER_nondet_ushort() [L174] input_259 = __VERIFIER_nondet_ushort() [L175] input_273 = __VERIFIER_nondet_uchar() [L176] input_274 = __VERIFIER_nondet_uchar() [L177] input_275 = __VERIFIER_nondet_uchar() [L180] SORT_3 var_10_arg_0 = state_7; [L181] SORT_9 var_10 = var_10_arg_0 >> 0; [L182] var_10 = var_10 & mask_SORT_9 [L183] SORT_9 var_12_arg_0 = var_10; [L184] SORT_9 var_12_arg_1 = var_11; [L185] SORT_1 var_12 = var_12_arg_0 == var_12_arg_1; [L186] SORT_3 var_13_arg_0 = state_7; [L187] SORT_9 var_13 = var_13_arg_0 >> 9; [L188] var_13 = var_13 & mask_SORT_9 [L189] SORT_9 var_15_arg_0 = var_13; [L190] SORT_9 var_15_arg_1 = var_14; [L191] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L192] SORT_1 var_16_arg_0 = var_12; [L193] SORT_1 var_16_arg_1 = var_15; [L194] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L195] SORT_3 var_18_arg_0 = state_7; [L196] SORT_17 var_18 = var_18_arg_0 >> 3; [L197] var_18 = var_18 & mask_SORT_17 [L198] SORT_3 var_19_arg_0 = state_7; [L199] SORT_17 var_19 = var_19_arg_0 >> 5; [L200] var_19 = var_19 & mask_SORT_17 [L201] SORT_17 var_20_arg_0 = var_18; [L202] SORT_17 var_20_arg_1 = var_19; [L203] SORT_1 var_20 = var_20_arg_0 == var_20_arg_1; [L204] SORT_1 var_21_arg_0 = var_16; [L205] SORT_1 var_21_arg_1 = var_20; [L206] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L207] SORT_1 var_22_arg_0 = var_21; [L208] SORT_1 var_22 = ~var_22_arg_0; [L209] SORT_9 var_26_arg_0 = state_24; [L210] SORT_1 var_26 = var_26_arg_0 >> 2; [L211] SORT_1 var_27_arg_0 = var_26; [L212] SORT_1 var_27 = ~var_27_arg_0; [L213] SORT_3 var_30_arg_0 = state_28; [L214] SORT_3 var_30_arg_1 = var_6; [L215] SORT_1 var_30 = var_30_arg_0 == var_30_arg_1; [L216] SORT_1 var_31_arg_0 = var_27; [L217] SORT_1 var_31_arg_1 = var_30; [L218] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L219] SORT_1 var_32_arg_0 = var_22; [L220] SORT_1 var_32_arg_1 = var_31; [L221] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L222] SORT_1 var_36_arg_0 = var_32; [L223] SORT_1 var_36 = ~var_36_arg_0; [L224] SORT_1 var_37_arg_0 = var_35; [L225] SORT_1 var_37_arg_1 = var_36; [L226] SORT_1 var_37 = var_37_arg_0 & var_37_arg_1; [L227] var_37 = var_37 & mask_SORT_1 [L228] SORT_1 bad_38_arg_0 = var_37; [L229] CALL __VERIFIER_assert(!(bad_38_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 05:49:01,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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_81a36679-9db1-4e39-ae46-886701c63311/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 5cac0223dd723d5cf2812b282c3448409c51f83effd590c85b50f84f0401207a --- 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 05:49:02,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:49:02,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:49:02,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:49:02,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:49:02,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:49:02,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:49:02,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:49:02,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:49:02,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:49:02,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:49:02,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:49:02,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:49:02,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:49:02,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:49:02,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:49:02,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:49:02,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:49:02,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:49:02,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:49:02,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:49:02,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:49:02,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:49:02,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:49:02,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:49:02,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:49:02,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:49:02,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:49:02,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:49:02,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:49:02,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:49:02,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:49:02,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:49:02,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:49:02,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:49:02,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:49:02,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:49:02,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:49:02,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:49:02,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:49:02,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:49:02,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 05:49:02,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:49:02,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:49:02,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:49:02,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:49:02,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:49:02,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:49:02,754 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:49:02,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:49:02,754 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:49:02,754 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:49:02,754 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:49:02,754 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:49:02,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:49:02,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:49:02,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:49:02,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:49:02,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:49:02,756 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:49:02,756 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 05:49:02,756 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 05:49:02,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:49:02,756 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:49:02,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:49:02,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:49:02,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 05:49:02,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:49:02,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:49:02,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:49:02,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:49:02,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:49:02,757 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 05:49:02,757 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 05:49:02,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:49:02,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:49:02,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 05:49:02,758 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_81a36679-9db1-4e39-ae46-886701c63311/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cac0223dd723d5cf2812b282c3448409c51f83effd590c85b50f84f0401207a [2022-12-14 05:49:02,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:49:03,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:49:03,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:49:03,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:49:03,005 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:49:03,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c [2022-12-14 05:49:05,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:49:05,794 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:49:05,794 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c [2022-12-14 05:49:05,805 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/data/01e033ebe/c9162f6275d74dc3a2dadca62397fe62/FLAGc29602b51 [2022-12-14 05:49:05,823 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/data/01e033ebe/c9162f6275d74dc3a2dadca62397fe62 [2022-12-14 05:49:05,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:49:05,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:49:05,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:49:05,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:49:05,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:49:05,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:49:05" (1/1) ... [2022-12-14 05:49:05,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b1d1ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:05, skipping insertion in model container [2022-12-14 05:49:05,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:49:05" (1/1) ... [2022-12-14 05:49:05,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:49:05,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:49:05,994 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_81a36679-9db1-4e39-ae46-886701c63311/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c[1107,1120] [2022-12-14 05:49:06,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:49:06,207 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:49:06,215 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_81a36679-9db1-4e39-ae46-886701c63311/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p6.c[1107,1120] [2022-12-14 05:49:06,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:49:06,313 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:49:06,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06 WrapperNode [2022-12-14 05:49:06,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:49:06,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:49:06,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:49:06,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:49:06,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,413 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1800 [2022-12-14 05:49:06,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:49:06,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:49:06,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:49:06,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:49:06,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,457 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:49:06,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:49:06,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:49:06,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:49:06,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (1/1) ... [2022-12-14 05:49:06,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:49:06,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:49:06,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:49:06,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:49:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:49:06,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:49:06,807 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:49:06,809 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:49:08,655 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:49:08,660 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:49:08,660 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:49:08,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:49:08 BoogieIcfgContainer [2022-12-14 05:49:08,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:49:08,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:49:08,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:49:08,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:49:08,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:49:05" (1/3) ... [2022-12-14 05:49:08,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3eeded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:49:08, skipping insertion in model container [2022-12-14 05:49:08,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:06" (2/3) ... [2022-12-14 05:49:08,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3eeded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:49:08, skipping insertion in model container [2022-12-14 05:49:08,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:49:08" (3/3) ... [2022-12-14 05:49:08,667 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p6.c [2022-12-14 05:49:08,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:49:08,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:49:08,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:49:08,719 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;@35af11f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:49:08,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:49:08,722 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 05:49:08,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 05:49:08,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:49:08,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 05:49:08,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:49:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:49:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 05:49:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:49:08,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40383937] [2022-12-14 05:49:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:49:08,747 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 05:49:08,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:49:08,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:49:08,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:49:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:08,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 05:49:08,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:09,131 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 05:49:09,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:49:09,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:49:09,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40383937] [2022-12-14 05:49:09,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40383937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:49:09,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:49:09,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:49:09,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144696864] [2022-12-14 05:49:09,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:49:09,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:49:09,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:49:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:49:09,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:49:09,161 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 05:49:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:49:09,436 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 05:49:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:49:09,438 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 05:49:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:49:09,444 INFO L225 Difference]: With dead ends: 20 [2022-12-14 05:49:09,444 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 05:49:09,446 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 05:49:09,449 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:49:09,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:49:09,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 05:49:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 05:49:09,469 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 05:49:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 05:49:09,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 05:49:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:49:09,470 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 05:49:09,470 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 05:49:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 05:49:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 05:49:09,470 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:49:09,471 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 05:49:09,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:49:09,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:49:09,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:49:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:49:09,675 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 05:49:09,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:49:09,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875706692] [2022-12-14 05:49:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:49:09,686 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 05:49:09,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:49:09,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:49:09,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:49:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:10,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 05:49:10,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:10,637 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 05:49:10,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:49:11,099 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 05:49:11,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:49:11,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875706692] [2022-12-14 05:49:11,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875706692] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:49:11,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [616066140] [2022-12-14 05:49:11,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:49:11,101 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:49:11,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:49:11,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:49:11,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 05:49:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:12,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 05:49:12,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:12,456 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 05:49:12,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:49:12,745 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 05:49:12,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [616066140] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:49:12,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193721248] [2022-12-14 05:49:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:49:12,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:49:12,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:49:12,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:49:12,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:49:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:13,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 05:49:13,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:13,725 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 05:49:13,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:49:26,768 WARN L233 SmtUtils]: Spent 10.54s on a formula simplification. DAG size of input: 201 DAG size of output: 160 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:49:27,256 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 05:49:27,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193721248] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:49:27,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:49:27,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 7, 7] total 18 [2022-12-14 05:49:27,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369123851] [2022-12-14 05:49:27,257 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:49:27,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 05:49:27,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:49:27,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 05:49:27,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=237, Unknown=1, NotChecked=0, Total=306 [2022-12-14 05:49:27,260 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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 05:49:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:49:28,829 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 05:49:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:49:28,830 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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 8 [2022-12-14 05:49:28,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:49:28,830 INFO L225 Difference]: With dead ends: 19 [2022-12-14 05:49:28,830 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 05:49:28,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=119, Invalid=342, Unknown=1, NotChecked=0, Total=462 [2022-12-14 05:49:28,831 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:49:28,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 26 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 05:49:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 05:49:28,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 05:49:28,834 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 05:49:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 05:49:28,835 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-12-14 05:49:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:49:28,835 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 05:49:28,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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 05:49:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 05:49:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 05:49:28,835 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:49:28,835 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 05:49:28,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:49:29,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 05:49:29,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:49:29,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:49:29,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:49:29,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:49:29,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-12-14 05:49:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:49:29,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925443583] [2022-12-14 05:49:29,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:49:29,444 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 05:49:29,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:49:29,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:49:29,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:49:30,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:49:30,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:49:30,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 4605 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-14 05:49:30,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:30,920 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 05:49:30,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:49:31,848 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 05:49:31,848 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:49:31,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925443583] [2022-12-14 05:49:31,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925443583] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:49:31,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1903857014] [2022-12-14 05:49:31,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:49:31,849 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:49:31,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:49:31,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:49:31,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 05:49:34,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:49:34,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:49:34,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 4605 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-14 05:49:34,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:35,011 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 05:49:35,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:49:35,842 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 05:49:35,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1903857014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:49:35,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909400025] [2022-12-14 05:49:35,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:49:35,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:49:35,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:49:35,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:49:35,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:49:37,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:49:37,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:49:37,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 4605 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-14 05:49:37,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:37,362 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 05:49:37,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:50:23,455 WARN L233 SmtUtils]: Spent 45.14s on a formula simplification. DAG size of input: 205 DAG size of output: 204 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:50:23,631 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 05:50:23,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909400025] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:50:23,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:50:23,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 20 [2022-12-14 05:50:23,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004113595] [2022-12-14 05:50:23,631 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:50:23,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 05:50:23,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:50:23,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 05:50:23,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:50:23,632 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 05:50:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:50:29,480 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-12-14 05:50:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 05:50:29,481 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 05:50:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:50:29,481 INFO L225 Difference]: With dead ends: 35 [2022-12-14 05:50:29,481 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 05:50:29,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=159, Invalid=652, Unknown=1, NotChecked=0, Total=812 [2022-12-14 05:50:29,483 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:50:29,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 56 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 05:50:29,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 05:50:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2022-12-14 05:50:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 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 05:50:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-12-14 05:50:29,492 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 14 [2022-12-14 05:50:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:50:29,492 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-12-14 05:50:29,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 05:50:29,493 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-12-14 05:50:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 05:50:29,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:29,493 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-12-14 05:50:29,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 05:50:29,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:50:29,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-12-14 05:50:30,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:50:30,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:30,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-12-14 05:50:30,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:50:30,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227888982] [2022-12-14 05:50:30,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:50:30,102 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 05:50:30,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:50:30,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:50:30,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81a36679-9db1-4e39-ae46-886701c63311/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 05:50:31,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 05:50:31,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:50:31,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 6090 conjuncts, 1019 conjunts are in the unsatisfiable core [2022-12-14 05:50:31,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:51:22,047 WARN L233 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 747 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:53:42,011 WARN L233 SmtUtils]: Spent 1.48m on a formula simplification. DAG size of input: 1099 DAG size of output: 284 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:53:43,751 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 05:53:43,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:00:48,571 WARN L233 SmtUtils]: Spent 44.18s on a formula simplification. DAG size of input: 1174 DAG size of output: 788 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:01:07,533 WARN L233 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 763 DAG size of output: 742 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)