./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9 --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 022102d12c6d0c5097c2cad24d28685bf677a3959fa1edca410f13c7d5b845fd --- 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-6b4ec56 [2022-11-20 18:59:19,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:59:19,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:59:19,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:59:19,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:59:19,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:59:19,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:59:19,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:59:19,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:59:19,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:59:19,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:59:19,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:59:19,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:59:19,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:59:19,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:59:19,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:59:19,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:59:19,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:59:19,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:59:19,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:59:19,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:59:19,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:59:19,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:59:19,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:59:19,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:59:19,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:59:19,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:59:19,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:59:19,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:59:19,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:59:19,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:59:19,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:59:19,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:59:19,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:59:19,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:59:19,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:59:19,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:59:19,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:59:19,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:59:19,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:59:19,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:59:19,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 18:59:19,513 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:59:19,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:59:19,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:59:19,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:59:19,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:59:19,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:59:19,517 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:59:19,518 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:59:19,518 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:59:19,518 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 18:59:19,519 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:59:19,519 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:59:19,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 18:59:19,520 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 18:59:19,520 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:59:19,520 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 18:59:19,521 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 18:59:19,521 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 18:59:19,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:59:19,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:59:19,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:59:19,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:59:19,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:59:19,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:59:19,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:59:19,523 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:59:19,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:59:19,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:59:19,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:59:19,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:59:19,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:59:19,525 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 18:59:19,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:59:19,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:59:19,525 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 18:59:19,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:59:19,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:59:19,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:59:19,526 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_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022102d12c6d0c5097c2cad24d28685bf677a3959fa1edca410f13c7d5b845fd [2022-11-20 18:59:19,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:59:19,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:59:19,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:59:19,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:59:19,831 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:59:19,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-11-20 18:59:22,922 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:59:23,268 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:59:23,269 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-11-20 18:59:23,287 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/data/d4a16808b/7d2d99fe5b3b404fbf3667d82a17592f/FLAGbc63009c4 [2022-11-20 18:59:23,304 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/data/d4a16808b/7d2d99fe5b3b404fbf3667d82a17592f [2022-11-20 18:59:23,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:59:23,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:59:23,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:59:23,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:59:23,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:59:23,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:23" (1/1) ... [2022-11-20 18:59:23,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f3c892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:23, skipping insertion in model container [2022-11-20 18:59:23,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:23" (1/1) ... [2022-11-20 18:59:23,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:59:23,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:59:23,681 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_0a4243ca-70fb-4fe8-af59-0628f1a0204d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c[1107,1120] [2022-11-20 18:59:24,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:59:24,156 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:59:24,169 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_0a4243ca-70fb-4fe8-af59-0628f1a0204d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c[1107,1120] [2022-11-20 18:59:24,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:59:24,399 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:59:24,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24 WrapperNode [2022-11-20 18:59:24,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:59:24,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:59:24,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:59:24,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:59:24,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,591 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1795 [2022-11-20 18:59:24,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:59:24,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:59:24,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:59:24,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:59:24,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:59:24,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:59:24,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:59:24,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:59:24,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (1/1) ... [2022-11-20 18:59:24,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:59:24,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:59:24,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 18:59:24,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 18:59:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:59:24,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:59:25,496 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:59:25,498 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:01:54,724 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:01:54,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:01:54,764 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:01:54,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:01:54 BoogieIcfgContainer [2022-11-20 19:01:54,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:01:54,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:01:54,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:01:54,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:01:54,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:59:23" (1/3) ... [2022-11-20 19:01:54,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a44843b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:01:54, skipping insertion in model container [2022-11-20 19:01:54,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:24" (2/3) ... [2022-11-20 19:01:54,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a44843b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:01:54, skipping insertion in model container [2022-11-20 19:01:54,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:01:54" (3/3) ... [2022-11-20 19:01:54,787 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-11-20 19:01:54,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:01:54,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:01:54,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:01:54,890 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;@db359ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:01:54,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:01:54,896 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) [2022-11-20 19:01:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 19:01:54,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:01:54,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 19:01:54,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:01:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:01:54,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-20 19:01:54,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:01:54,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412290565] [2022-11-20 19:01:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:01:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:01:55,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 19:01:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:01:55,572 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 19:01:55,574 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 19:01:55,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:01:55,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:01:55,585 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 19:01:55,589 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:01:55,617 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 19:01:55,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:01:55 BoogieIcfgContainer [2022-11-20 19:01:55,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:01:55,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:01:55,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:01:55,636 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:01:55,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:01:54" (3/4) ... [2022-11-20 19:01:55,639 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 19:01:55,639 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:01:55,641 INFO L158 Benchmark]: Toolchain (without parser) took 152331.82ms. Allocated memory was 174.1MB in the beginning and 811.6MB in the end (delta: 637.5MB). Free memory was 138.8MB in the beginning and 279.6MB in the end (delta: -140.8MB). Peak memory consumption was 496.2MB. Max. memory is 16.1GB. [2022-11-20 19:01:55,641 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 97.3MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:01:55,642 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1090.69ms. Allocated memory is still 174.1MB. Free memory was 138.8MB in the beginning and 86.4MB in the end (delta: 52.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-11-20 19:01:55,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 189.56ms. Allocated memory is still 174.1MB. Free memory was 86.4MB in the beginning and 66.7MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 19:01:55,643 INFO L158 Benchmark]: Boogie Preprocessor took 250.49ms. Allocated memory is still 174.1MB. Free memory was 66.7MB in the beginning and 127.3MB in the end (delta: -60.7MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2022-11-20 19:01:55,644 INFO L158 Benchmark]: RCFGBuilder took 149923.95ms. Allocated memory was 174.1MB in the beginning and 811.6MB in the end (delta: 637.5MB). Free memory was 127.3MB in the beginning and 333.1MB in the end (delta: -205.8MB). Peak memory consumption was 499.7MB. Max. memory is 16.1GB. [2022-11-20 19:01:55,645 INFO L158 Benchmark]: TraceAbstraction took 865.16ms. Allocated memory is still 811.6MB. Free memory was 332.0MB in the beginning and 279.6MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-11-20 19:01:55,645 INFO L158 Benchmark]: Witness Printer took 3.86ms. Allocated memory is still 811.6MB. Free memory is still 279.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:01:55,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 97.3MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1090.69ms. Allocated memory is still 174.1MB. Free memory was 138.8MB in the beginning and 86.4MB in the end (delta: 52.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 189.56ms. Allocated memory is still 174.1MB. Free memory was 86.4MB in the beginning and 66.7MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 250.49ms. Allocated memory is still 174.1MB. Free memory was 66.7MB in the beginning and 127.3MB in the end (delta: -60.7MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * RCFGBuilder took 149923.95ms. Allocated memory was 174.1MB in the beginning and 811.6MB in the end (delta: 637.5MB). Free memory was 127.3MB in the beginning and 333.1MB in the end (delta: -205.8MB). Peak memory consumption was 499.7MB. Max. memory is 16.1GB. * TraceAbstraction took 865.16ms. Allocated memory is still 811.6MB. Free memory was 332.0MB in the beginning and 279.6MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 3.86ms. Allocated memory is still 811.6MB. Free memory is still 279.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 192, overapproximation of bitwiseOr at line 200, 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_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 12); [L35] const SORT_44 msb_SORT_44 = (SORT_44)1 << (12 - 1); [L37] const SORT_98 mask_SORT_98 = (SORT_98)-1 >> (sizeof(SORT_98) * 8 - 17); [L38] const SORT_98 msb_SORT_98 = (SORT_98)1 << (17 - 1); [L40] const SORT_99 mask_SORT_99 = (SORT_99)-1 >> (sizeof(SORT_99) * 8 - 5); [L41] const SORT_99 msb_SORT_99 = (SORT_99)1 << (5 - 1); [L43] const SORT_102 mask_SORT_102 = (SORT_102)-1 >> (sizeof(SORT_102) * 8 - 9); [L44] const SORT_102 msb_SORT_102 = (SORT_102)1 << (9 - 1); [L46] const SORT_104 mask_SORT_104 = (SORT_104)-1 >> (sizeof(SORT_104) * 8 - 10); [L47] const SORT_104 msb_SORT_104 = (SORT_104)1 << (10 - 1); [L49] const SORT_107 mask_SORT_107 = (SORT_107)-1 >> (sizeof(SORT_107) * 8 - 11); [L50] const SORT_107 msb_SORT_107 = (SORT_107)1 << (11 - 1); [L52] const SORT_112 mask_SORT_112 = (SORT_112)-1 >> (sizeof(SORT_112) * 8 - 13); [L53] const SORT_112 msb_SORT_112 = (SORT_112)1 << (13 - 1); [L55] const SORT_115 mask_SORT_115 = (SORT_115)-1 >> (sizeof(SORT_115) * 8 - 14); [L56] const SORT_115 msb_SORT_115 = (SORT_115)1 << (14 - 1); [L58] const SORT_118 mask_SORT_118 = (SORT_118)-1 >> (sizeof(SORT_118) * 8 - 15); [L59] const SORT_118 msb_SORT_118 = (SORT_118)1 << (15 - 1); [L61] const SORT_151 mask_SORT_151 = (SORT_151)-1 >> (sizeof(SORT_151) * 8 - 7); [L62] const SORT_151 msb_SORT_151 = (SORT_151)1 << (7 - 1); [L64] const SORT_211 mask_SORT_211 = (SORT_211)-1 >> (sizeof(SORT_211) * 8 - 2); [L65] const SORT_211 msb_SORT_211 = (SORT_211)1 << (2 - 1); [L67] const SORT_370 mask_SORT_370 = (SORT_370)-1 >> (sizeof(SORT_370) * 8 - 4); [L68] const SORT_370 msb_SORT_370 = (SORT_370)1 << (4 - 1); [L70] const SORT_373 mask_SORT_373 = (SORT_373)-1 >> (sizeof(SORT_373) * 8 - 6); [L71] const SORT_373 msb_SORT_373 = (SORT_373)1 << (6 - 1); [L73] const SORT_376 mask_SORT_376 = (SORT_376)-1 >> (sizeof(SORT_376) * 8 - 8); [L74] const SORT_376 msb_SORT_376 = (SORT_376)1 << (8 - 1); [L76] const SORT_3 var_6 = 0; [L77] const SORT_9 var_11 = 2; [L78] const SORT_9 var_13 = 0; [L79] const SORT_1 var_19 = 0; [L80] const SORT_1 var_34 = 1; [L81] const SORT_44 var_45 = 0; [L82] const SORT_9 var_61 = 1; [L83] const SORT_9 var_66 = 4; [L84] const SORT_9 var_68 = 5; [L85] const SORT_9 var_72 = 3; [L86] const SORT_99 var_100 = 0; [L87] const SORT_151 var_153 = 5; [L88] const SORT_151 var_157 = 4; [L89] const SORT_151 var_161 = 3; [L90] const SORT_151 var_165 = 2; [L91] const SORT_151 var_169 = 1; [L92] const SORT_151 var_173 = 0; [L93] const SORT_44 var_196 = 2; [L94] const SORT_211 var_213 = 0; [L95] const SORT_3 var_220 = 65535; [L97] SORT_1 input_2; [L98] SORT_3 input_4; [L99] SORT_3 input_5; [L100] SORT_3 input_208; [L101] SORT_3 input_209; [L102] SORT_3 input_210; [L103] SORT_3 input_219; [L104] SORT_3 input_228; [L105] SORT_3 input_229; [L106] SORT_3 input_230; [L107] SORT_3 input_233; [L108] SORT_3 input_251; [L109] SORT_3 input_252; [L110] SORT_3 input_253; [L111] SORT_3 input_256; [L112] SORT_3 input_258; [L113] SORT_211 input_272; [L114] SORT_211 input_273; [L115] SORT_211 input_274; [L117] SORT_3 state_7 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L118] SORT_9 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L119] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_3 state_23 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L121] SORT_3 state_38 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L122] SORT_3 state_40 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L123] SORT_3 state_42 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L124] SORT_44 state_46 = __VERIFIER_nondet_ushort() & mask_SORT_44; [L125] SORT_44 state_48 = __VERIFIER_nondet_ushort() & mask_SORT_44; [L126] SORT_3 state_50 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L127] SORT_3 state_52 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L128] SORT_3 state_54 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L129] SORT_3 state_56 = __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_15_arg_1 = var_13; [L134] state_14 = init_15_arg_1 [L135] SORT_1 init_21_arg_1 = var_19; [L136] state_20 = init_21_arg_1 [L137] SORT_3 init_24_arg_1 = var_6; [L138] state_23 = init_24_arg_1 [L139] SORT_3 init_39_arg_1 = var_6; [L140] state_38 = init_39_arg_1 [L141] SORT_3 init_41_arg_1 = var_6; [L142] state_40 = init_41_arg_1 [L143] SORT_3 init_43_arg_1 = var_6; [L144] state_42 = init_43_arg_1 [L145] SORT_44 init_47_arg_1 = var_45; [L146] state_46 = init_47_arg_1 [L147] SORT_44 init_49_arg_1 = var_45; [L148] state_48 = init_49_arg_1 [L149] SORT_3 init_51_arg_1 = var_6; [L150] state_50 = init_51_arg_1 [L151] SORT_3 init_53_arg_1 = var_6; [L152] state_52 = init_53_arg_1 [L153] SORT_3 init_55_arg_1 = var_6; [L154] state_54 = init_55_arg_1 [L155] SORT_3 init_57_arg_1 = var_6; [L156] state_56 = init_57_arg_1 VAL [init_15_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_39_arg_1=0, init_41_arg_1=0, init_43_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_102=511, mask_SORT_104=1023, mask_SORT_107=2047, mask_SORT_112=8191, mask_SORT_115=16383, mask_SORT_118=32767, mask_SORT_151=127, mask_SORT_211=3, mask_SORT_3=65535, mask_SORT_370=15, mask_SORT_373=63, mask_SORT_376=255, mask_SORT_44=4095, mask_SORT_9=7, mask_SORT_98=4294967295, mask_SORT_99=31, msb_SORT_1=1, msb_SORT_102=256, msb_SORT_104=512, msb_SORT_107=1024, msb_SORT_112=4096, msb_SORT_115=8192, msb_SORT_118=16384, msb_SORT_151=64, msb_SORT_211=2, msb_SORT_3=32768, msb_SORT_370=8, msb_SORT_373=32, msb_SORT_376=128, msb_SORT_44=2048, msb_SORT_9=4, msb_SORT_98=65536, msb_SORT_99=16, state_14=0, state_20=0, state_23=0, state_38=0, state_40=0, state_42=0, state_46=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_7=0, var_100=0, var_11=2, var_13=0, var_153=5, var_157=4, var_161=3, var_165=2, var_169=1, var_173=0, var_19=0, var_196=2, var_213=0, var_220=65535, var_34=1, var_45=0, var_6=0, var_61=1, var_66=4, var_68=5, var_72=3] [L159] input_2 = __VERIFIER_nondet_uchar() [L160] input_4 = __VERIFIER_nondet_ushort() [L161] input_5 = __VERIFIER_nondet_ushort() [L162] input_208 = __VERIFIER_nondet_ushort() [L163] input_209 = __VERIFIER_nondet_ushort() [L164] input_210 = __VERIFIER_nondet_ushort() [L165] input_219 = __VERIFIER_nondet_ushort() [L166] input_228 = __VERIFIER_nondet_ushort() [L167] input_229 = __VERIFIER_nondet_ushort() [L168] input_230 = __VERIFIER_nondet_ushort() [L169] input_233 = __VERIFIER_nondet_ushort() [L170] input_251 = __VERIFIER_nondet_ushort() [L171] input_252 = __VERIFIER_nondet_ushort() [L172] input_253 = __VERIFIER_nondet_ushort() [L173] input_256 = __VERIFIER_nondet_ushort() [L174] input_258 = __VERIFIER_nondet_ushort() [L175] input_272 = __VERIFIER_nondet_uchar() [L176] input_273 = __VERIFIER_nondet_uchar() [L177] input_274 = __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_9 var_16_arg_0 = state_14; [L187] SORT_1 var_16 = var_16_arg_0 >> 2; [L188] SORT_1 var_17_arg_0 = var_12; [L189] SORT_1 var_17_arg_1 = var_16; [L190] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L191] SORT_1 var_18_arg_0 = var_17; [L192] SORT_1 var_18 = ~var_18_arg_0; [L193] SORT_1 var_22_arg_0 = state_20; [L194] SORT_1 var_22 = ~var_22_arg_0; [L195] SORT_3 var_25_arg_0 = state_23; [L196] SORT_3 var_25_arg_1 = var_6; [L197] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L198] SORT_1 var_26_arg_0 = var_22; [L199] SORT_1 var_26_arg_1 = var_25; [L200] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L201] SORT_3 var_27_arg_0 = state_23; [L202] SORT_3 var_27_arg_1 = var_6; [L203] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L204] SORT_1 var_28_arg_0 = var_27; [L205] SORT_1 var_28 = ~var_28_arg_0; [L206] SORT_1 var_29_arg_0 = var_28; [L207] SORT_1 var_29_arg_1 = state_20; [L208] SORT_1 var_29 = var_29_arg_0 | var_29_arg_1; [L209] SORT_1 var_30_arg_0 = var_26; [L210] SORT_1 var_30_arg_1 = var_29; [L211] SORT_1 var_30 = var_30_arg_0 & var_30_arg_1; [L212] SORT_1 var_31_arg_0 = var_18; [L213] SORT_1 var_31_arg_1 = var_30; [L214] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L215] SORT_1 var_35_arg_0 = var_31; [L216] SORT_1 var_35 = ~var_35_arg_0; [L217] SORT_1 var_36_arg_0 = var_34; [L218] SORT_1 var_36_arg_1 = var_35; [L219] SORT_1 var_36 = var_36_arg_0 & var_36_arg_1; [L220] var_36 = var_36 & mask_SORT_1 [L221] SORT_1 bad_37_arg_0 = var_36; [L222] CALL __VERIFIER_assert(!(bad_37_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: 0.7s, 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, 0.3s 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 [2022-11-20 19:01:55,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9 --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 022102d12c6d0c5097c2cad24d28685bf677a3959fa1edca410f13c7d5b845fd --- 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-6b4ec56 [2022-11-20 19:01:58,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:01:58,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:01:58,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:01:58,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:01:58,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:01:58,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:01:58,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:01:58,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:01:58,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:01:58,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:01:58,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:01:58,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:01:58,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:01:58,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:01:58,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:01:58,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:01:58,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:01:58,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:01:58,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:01:58,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:01:58,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:01:58,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:01:58,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:01:58,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:01:58,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:01:58,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:01:58,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:01:58,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:01:58,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:01:58,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:01:58,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:01:58,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:01:58,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:01:58,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:01:58,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:01:58,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:01:58,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:01:58,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:01:58,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:01:58,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:01:58,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 19:01:58,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:01:58,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:01:58,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:01:58,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:01:58,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:01:58,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:01:58,463 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:01:58,463 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:01:58,463 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:01:58,464 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:01:58,465 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:01:58,465 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:01:58,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:01:58,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:01:58,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:01:58,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:01:58,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:01:58,468 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 19:01:58,468 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 19:01:58,468 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 19:01:58,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:01:58,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:01:58,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:01:58,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:01:58,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 19:01:58,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:01:58,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:01:58,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:01:58,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:01:58,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:01:58,472 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 19:01:58,472 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 19:01:58,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:01:58,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:01:58,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 19:01:58,474 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_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022102d12c6d0c5097c2cad24d28685bf677a3959fa1edca410f13c7d5b845fd [2022-11-20 19:01:58,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:01:58,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:01:58,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:01:58,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:01:58,934 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:01:58,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-11-20 19:02:02,069 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:02:02,475 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:02:02,475 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-11-20 19:02:02,496 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/data/aaf9d39a0/b0591426e91f45178d064e05d10fff0d/FLAG4d38fd04b [2022-11-20 19:02:02,524 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/data/aaf9d39a0/b0591426e91f45178d064e05d10fff0d [2022-11-20 19:02:02,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:02:02,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:02:02,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:02:02,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:02:02,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:02:02,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:02" (1/1) ... [2022-11-20 19:02:02,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef3f347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:02, skipping insertion in model container [2022-11-20 19:02:02,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:02" (1/1) ... [2022-11-20 19:02:02,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:02:02,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:02:02,809 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_0a4243ca-70fb-4fe8-af59-0628f1a0204d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c[1107,1120] [2022-11-20 19:02:03,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:02:03,263 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:02:03,276 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_0a4243ca-70fb-4fe8-af59-0628f1a0204d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c[1107,1120] [2022-11-20 19:02:03,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:02:03,560 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:02:03,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03 WrapperNode [2022-11-20 19:02:03,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:02:03,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:02:03,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:02:03,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:02:03,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,778 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1795 [2022-11-20 19:02:03,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:02:03,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:02:03,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:02:03,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:02:03,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,905 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:02:03,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:02:03,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:02:03,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:02:03,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (1/1) ... [2022-11-20 19:02:03,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:02:03,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:02:03,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:02:04,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:02:04,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:02:04,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:02:04,531 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:02:04,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:02:08,176 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:02:08,184 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:02:08,184 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:02:08,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:08 BoogieIcfgContainer [2022-11-20 19:02:08,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:02:08,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:02:08,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:02:08,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:02:08,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:02:02" (1/3) ... [2022-11-20 19:02:08,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64573979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:02:08, skipping insertion in model container [2022-11-20 19:02:08,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:03" (2/3) ... [2022-11-20 19:02:08,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64573979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:02:08, skipping insertion in model container [2022-11-20 19:02:08,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:08" (3/3) ... [2022-11-20 19:02:08,198 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-11-20 19:02:08,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:02:08,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:02:08,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:02:08,281 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;@3d0bee51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:02:08,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:02:08,286 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) [2022-11-20 19:02:08,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 19:02:08,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:08,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 19:02:08,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:02:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 19:02:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:02:08,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251951022] [2022-11-20 19:02:08,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:08,316 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 [2022-11-20 19:02:08,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:02:08,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:02:08,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:02:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:08,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 19:02:08,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:08,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:02:08,922 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:02:08,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251951022] [2022-11-20 19:02:08,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251951022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:02:08,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:02:08,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:02:08,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109618359] [2022-11-20 19:02:08,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:02:08,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:02:08,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:02:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:02:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:02:08,980 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) [2022-11-20 19:02:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:09,399 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-20 19:02:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:02:09,402 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 [2022-11-20 19:02:09,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:09,410 INFO L225 Difference]: With dead ends: 20 [2022-11-20 19:02:09,411 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 19:02:09,414 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 [2022-11-20 19:02:09,418 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:09,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:02:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 19:02:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 19:02:09,450 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) [2022-11-20 19:02:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 19:02:09,452 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 19:02:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:09,453 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 19:02:09,453 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) [2022-11-20 19:02:09,453 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 19:02:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 19:02:09,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:09,454 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 19:02:09,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:02:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:02:09,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:02:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:09,669 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 19:02:09,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:02:09,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749875305] [2022-11-20 19:02:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:09,673 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 [2022-11-20 19:02:09,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:02:09,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:02:09,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:02:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:10,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 19:02:10,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:10,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:02:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:11,376 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:02:11,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749875305] [2022-11-20 19:02:11,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749875305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:02:11,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1556914008] [2022-11-20 19:02:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:11,382 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:02:11,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:02:11,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:02:11,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-20 19:02:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:13,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 19:02:13,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:13,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:02:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:13,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1556914008] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:02:13,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655223664] [2022-11-20 19:02:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:13,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:02:13,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:02:13,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:02:13,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 19:02:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:14,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 19:02:14,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:14,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:02:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:15,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655223664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:02:15,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:02:15,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 11 [2022-11-20 19:02:15,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255451838] [2022-11-20 19:02:15,294 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:02:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 19:02:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:02:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 19:02:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:02:15,298 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2022-11-20 19:02:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:15,723 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-20 19:02:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:02:15,725 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 [2022-11-20 19:02:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:15,726 INFO L225 Difference]: With dead ends: 16 [2022-11-20 19:02:15,726 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 19:02:15,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:02:15,730 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:15,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 14 Unchecked, 0.3s Time] [2022-11-20 19:02:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 19:02:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-20 19:02:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:02:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 19:02:15,741 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-20 19:02:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:15,742 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 19:02:15,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2022-11-20 19:02:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 19:02:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 19:02:15,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:15,744 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 19:02:15,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 19:02:15,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:02:16,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:02:16,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:02:16,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:02:16,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:16,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-20 19:02:16,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:02:16,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367160672] [2022-11-20 19:02:16,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 19:02:16,366 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 [2022-11-20 19:02:16,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:02:16,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:02:16,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:02:17,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 19:02:17,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:02:17,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-20 19:02:17,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:18,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:02:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:19,147 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:02:19,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367160672] [2022-11-20 19:02:19,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367160672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:02:19,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [52903940] [2022-11-20 19:02:19,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 19:02:19,149 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:02:19,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:02:19,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:02:19,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-20 19:02:21,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 19:02:21,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:02:22,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 19:02:22,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:22,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:02:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:23,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [52903940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:02:23,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444108179] [2022-11-20 19:02:23,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 19:02:23,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:02:23,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:02:23,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:02:23,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 19:02:24,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 19:02:24,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:02:24,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 132 conjunts are in the unsatisfiable core [2022-11-20 19:02:24,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:02:25,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:06:22,615 WARN L233 SmtUtils]: Spent 3.81m on a formula simplification. DAG size of input: 391 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:07:55,115 WARN L233 SmtUtils]: Spent 1.46m on a formula simplification. DAG size of input: 306 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:07:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:07:55,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444108179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:07:55,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:07:55,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 9, 9] total 23 [2022-11-20 19:07:55,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041854113] [2022-11-20 19:07:55,148 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:07:55,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 19:07:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:07:55,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 19:07:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=370, Unknown=4, NotChecked=0, Total=506 [2022-11-20 19:07:55,150 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 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) [2022-11-20 19:07:56,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:07:56,061 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-20 19:07:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:07:56,062 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 19:07:56,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:07:56,063 INFO L225 Difference]: With dead ends: 19 [2022-11-20 19:07:56,063 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 19:07:56,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 327.2s TimeCoverageRelationStatistics Valid=191, Invalid=507, Unknown=4, NotChecked=0, Total=702 [2022-11-20 19:07:56,067 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:07:56,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 37 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 46 Unchecked, 0.6s Time] [2022-11-20 19:07:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 19:07:56,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-20 19:07:56,073 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) [2022-11-20 19:07:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-20 19:07:56,074 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-20 19:07:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:07:56,075 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-20 19:07:56,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 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) [2022-11-20 19:07:56,075 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-20 19:07:56,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 19:07:56,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:07:56,076 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-20 19:07:56,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 19:07:56,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 19:07:56,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-20 19:07:56,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 19:07:56,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:07:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:07:56,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-20 19:07:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:07:56,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683730002] [2022-11-20 19:07:56,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:07:56,694 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 [2022-11-20 19:07:56,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:07:56,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:07:56,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:07:58,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 19:07:58,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:07:58,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 4595 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 19:07:58,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:07:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:07:59,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:08:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:08:00,714 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:08:00,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683730002] [2022-11-20 19:08:00,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683730002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:08:00,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [170899608] [2022-11-20 19:08:00,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:08:00,715 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:08:00,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:08:00,719 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:08:00,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-20 19:08:05,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 19:08:05,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:08:05,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 4595 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-20 19:08:05,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:08:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:08:05,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:08:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:08:07,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [170899608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:08:07,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171305857] [2022-11-20 19:08:07,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 19:08:07,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:08:07,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:08:07,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:08:07,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 19:08:09,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 19:08:09,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:08:09,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 4595 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-20 19:08:09,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:08:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:08:09,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:08:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:08:11,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171305857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:08:11,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:08:11,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 7, 7] total 21 [2022-11-20 19:08:11,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230262359] [2022-11-20 19:08:11,740 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:08:11,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 19:08:11,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:08:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 19:08:11,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:08:11,743 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 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) [2022-11-20 19:08:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:08:13,593 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-11-20 19:08:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 19:08:13,593 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 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 [2022-11-20 19:08:13,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:08:13,594 INFO L225 Difference]: With dead ends: 29 [2022-11-20 19:08:13,594 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 19:08:13,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:08:13,596 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:08:13,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 32 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 54 Unchecked, 0.7s Time] [2022-11-20 19:08:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 19:08:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-11-20 19:08:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-11-20 19:08:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-20 19:08:13,607 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2022-11-20 19:08:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:08:13,607 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-20 19:08:13,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 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) [2022-11-20 19:08:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-20 19:08:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 19:08:13,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:08:13,609 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-20 19:08:13,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-20 19:08:13,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 19:08:14,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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)] Forceful destruction successful, exit code 0 [2022-11-20 19:08:14,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:08:14,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:08:14,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:08:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-20 19:08:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:08:14,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041249100] [2022-11-20 19:08:14,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 19:08:14,228 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 [2022-11-20 19:08:14,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:08:14,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:08:14,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a4243ca-70fb-4fe8-af59-0628f1a0204d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 19:08:16,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 19:08:16,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:08:16,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 6078 conjuncts, 897 conjunts are in the unsatisfiable core [2022-11-20 19:08:16,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:08:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:08:58,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:11:45,369 WARN L233 SmtUtils]: Spent 36.43s on a formula simplification. DAG size of input: 1250 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:12:25,187 WARN L233 SmtUtils]: Spent 33.10s on a formula simplification. DAG size of input: 520 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)