./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur --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 5d2e3d2da64545cb55955230543ccece093594c714793fa68629cfbe91e63b67 --- 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-38b53e6 [2022-11-25 23:43:54,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:43:54,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:43:54,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:43:54,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:43:54,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:43:54,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:43:54,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:43:54,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:43:54,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:43:54,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:43:54,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:43:54,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:43:54,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:43:54,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:43:54,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:43:54,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:43:54,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:43:54,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:43:54,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:43:54,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:43:54,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:43:54,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:43:54,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:43:54,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:43:54,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:43:54,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:43:54,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:43:54,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:43:54,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:43:54,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:43:54,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:43:54,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:43:54,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:43:54,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:43:54,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:43:54,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:43:54,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:43:54,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:43:54,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:43:54,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:43:54,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:43:54,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:43:54,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:43:54,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:43:54,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:43:54,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:43:54,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:43:54,496 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:43:54,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:43:54,497 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:43:54,497 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:43:54,497 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:43:54,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:43:54,498 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:43:54,498 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:43:54,498 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:43:54,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:43:54,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:43:54,499 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:43:54,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:43:54,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:43:54,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:43:54,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:43:54,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:43:54,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:43:54,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:43:54,501 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:43:54,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:43:54,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:43:54,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:43:54,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:43:54,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:43:54,502 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:43:54,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:43:54,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:43:54,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:43:54,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:43:54,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:43:54,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:43:54,503 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_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d2e3d2da64545cb55955230543ccece093594c714793fa68629cfbe91e63b67 [2022-11-25 23:43:54,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:43:54,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:43:54,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:43:54,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:43:54,831 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:43:54,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-25 23:43:57,842 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:43:58,109 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:43:58,109 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-25 23:43:58,120 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/data/91827e185/8a84c3ded2c74b258cb3250861f869e5/FLAG71112dfd1 [2022-11-25 23:43:58,135 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/data/91827e185/8a84c3ded2c74b258cb3250861f869e5 [2022-11-25 23:43:58,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:43:58,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:43:58,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:43:58,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:43:58,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:43:58,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27136c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58, skipping insertion in model container [2022-11-25 23:43:58,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:43:58,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:43:58,439 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_a17b005c-3d14-48ec-b0a4-b464f2624b8c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1107,1120] [2022-11-25 23:43:58,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:43:58,594 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:43:58,608 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_a17b005c-3d14-48ec-b0a4-b464f2624b8c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1107,1120] [2022-11-25 23:43:58,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:43:58,756 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:43:58,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58 WrapperNode [2022-11-25 23:43:58,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:43:58,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:43:58,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:43:58,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:43:58,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,878 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 742 [2022-11-25 23:43:58,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:43:58,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:43:58,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:43:58,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:43:58,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,969 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:58,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:43:59,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:43:59,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:43:59,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:43:59,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (1/1) ... [2022-11-25 23:43:59,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:43:59,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:43:59,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:43:59,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:43:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:43:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:43:59,368 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:43:59,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:44:02,864 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:44:02,902 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:44:02,903 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:44:02,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:44:02 BoogieIcfgContainer [2022-11-25 23:44:02,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:44:02,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:44:02,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:44:02,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:44:02,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:43:58" (1/3) ... [2022-11-25 23:44:02,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177188b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:44:02, skipping insertion in model container [2022-11-25 23:44:02,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:58" (2/3) ... [2022-11-25 23:44:02,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177188b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:44:02, skipping insertion in model container [2022-11-25 23:44:02,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:44:02" (3/3) ... [2022-11-25 23:44:02,931 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-25 23:44:02,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:44:02,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:44:03,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:44:03,015 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;@fa318b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:44:03,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:44:03,019 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) [2022-11-25 23:44:03,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:44:03,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:44:03,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:44:03,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:44:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:44:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-25 23:44:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:44:03,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404751412] [2022-11-25 23:44:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:44:03,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:44:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:44:03,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:44:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:44:03,477 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:44:03,480 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:44:03,481 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:44:03,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:44:03,488 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:44:03,492 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:44:03,536 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-25 23:44:03,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:44:03 BoogieIcfgContainer [2022-11-25 23:44:03,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:44:03,561 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:44:03,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:44:03,562 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:44:03,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:44:02" (3/4) ... [2022-11-25 23:44:03,566 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:44:03,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:44:03,567 INFO L158 Benchmark]: Toolchain (without parser) took 5427.29ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 118.3MB in the beginning and 134.4MB in the end (delta: -16.1MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-25 23:44:03,568 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:44:03,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 616.03ms. Allocated memory is still 159.4MB. Free memory was 118.3MB in the beginning and 109.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 23:44:03,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.71ms. Allocated memory is still 159.4MB. Free memory was 109.6MB in the beginning and 102.0MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 23:44:03,570 INFO L158 Benchmark]: Boogie Preprocessor took 132.13ms. Allocated memory is still 159.4MB. Free memory was 102.0MB in the beginning and 98.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:44:03,571 INFO L158 Benchmark]: RCFGBuilder took 3893.88ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 98.4MB in the beginning and 171.1MB in the end (delta: -72.7MB). Peak memory consumption was 121.7MB. Max. memory is 16.1GB. [2022-11-25 23:44:03,571 INFO L158 Benchmark]: TraceAbstraction took 644.11ms. Allocated memory is still 232.8MB. Free memory was 171.1MB in the beginning and 134.4MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-25 23:44:03,572 INFO L158 Benchmark]: Witness Printer took 4.76ms. Allocated memory is still 232.8MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:44:03,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 616.03ms. Allocated memory is still 159.4MB. Free memory was 118.3MB in the beginning and 109.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.71ms. Allocated memory is still 159.4MB. Free memory was 109.6MB in the beginning and 102.0MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 132.13ms. Allocated memory is still 159.4MB. Free memory was 102.0MB in the beginning and 98.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 3893.88ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 98.4MB in the beginning and 171.1MB in the end (delta: -72.7MB). Peak memory consumption was 121.7MB. Max. memory is 16.1GB. * TraceAbstraction took 644.11ms. Allocated memory is still 232.8MB. Free memory was 171.1MB in the beginning and 134.4MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 4.76ms. Allocated memory is still 232.8MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 218, overapproximation of bitwiseOr at line 221, overapproximation of bitwiseAnd at line 197. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 8); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (8 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L37] const SORT_45 mask_SORT_45 = (SORT_45)-1 >> (sizeof(SORT_45) * 8 - 6); [L38] const SORT_45 msb_SORT_45 = (SORT_45)1 << (6 - 1); [L40] const SORT_55 mask_SORT_55 = (SORT_55)-1 >> (sizeof(SORT_55) * 8 - 32); [L41] const SORT_55 msb_SORT_55 = (SORT_55)1 << (32 - 1); [L43] const SORT_61 mask_SORT_61 = (SORT_61)-1 >> (sizeof(SORT_61) * 8 - 25); [L44] const SORT_61 msb_SORT_61 = (SORT_61)1 << (25 - 1); [L46] const SORT_63 mask_SORT_63 = (SORT_63)-1 >> (sizeof(SORT_63) * 8 - 7); [L47] const SORT_63 msb_SORT_63 = (SORT_63)1 << (7 - 1); [L49] const SORT_84 mask_SORT_84 = (SORT_84)-1 >> (sizeof(SORT_84) * 8 - 2); [L50] const SORT_84 msb_SORT_84 = (SORT_84)1 << (2 - 1); [L52] const SORT_122 mask_SORT_122 = (SORT_122)-1 >> (sizeof(SORT_122) * 8 - 3); [L53] const SORT_122 msb_SORT_122 = (SORT_122)1 << (3 - 1); [L55] const SORT_1 var_17 = 0; [L56] const SORT_1 var_41 = 1; [L57] const SORT_45 var_46 = 0; [L58] const SORT_5 var_50 = 0; [L59] const SORT_5 var_56 = 2; [L60] const SORT_55 var_58 = 2; [L61] const SORT_61 var_62 = 0; [L62] const SORT_55 var_66 = 1; [L63] const SORT_55 var_112 = 0; [L64] const SORT_45 var_218 = 33; [L65] const SORT_5 var_227 = 1; [L67] SORT_1 input_2; [L68] SORT_3 input_4; [L69] SORT_5 input_6; [L70] SORT_7 input_8; [L71] SORT_1 input_9; [L72] SORT_1 input_10; [L73] SORT_1 input_11; [L74] SORT_1 input_12; [L75] SORT_7 input_13; [L76] SORT_1 input_14; [L77] SORT_1 input_15; [L78] SORT_1 input_16; [L79] SORT_84 input_85; [L80] SORT_1 input_87; [L81] SORT_1 input_89; [L82] SORT_1 input_91; [L83] SORT_1 input_99; [L84] SORT_1 input_105; [L85] SORT_1 input_134; [L86] SORT_1 input_149; [L87] SORT_7 input_162; [L88] SORT_1 input_164; [L89] SORT_3 input_166; [L90] SORT_5 input_168; [L91] SORT_1 input_179; [L93] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_45 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_45; [L101] SORT_5 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L102] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_76 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_80 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_82 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_93 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_95 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_101 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_103 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_107 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_136 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_138 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_142 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_144 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_151 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_153 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_170 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_172 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_181 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_183 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_185 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_1 init_19_arg_1 = var_17; [L126] state_18 = init_19_arg_1 [L127] SORT_1 init_22_arg_1 = var_17; [L128] state_21 = init_22_arg_1 [L129] SORT_1 init_24_arg_1 = var_17; [L130] state_23 = init_24_arg_1 [L131] SORT_1 init_27_arg_1 = var_17; [L132] state_26 = init_27_arg_1 [L133] SORT_1 init_30_arg_1 = var_17; [L134] state_29 = init_30_arg_1 [L135] SORT_1 init_33_arg_1 = var_17; [L136] state_32 = init_33_arg_1 [L137] SORT_1 init_36_arg_1 = var_17; [L138] state_35 = init_36_arg_1 [L139] SORT_45 init_48_arg_1 = var_46; [L140] state_47 = init_48_arg_1 [L141] SORT_5 init_52_arg_1 = var_50; [L142] state_51 = init_52_arg_1 [L143] SORT_1 init_71_arg_1 = var_17; [L144] state_70 = init_71_arg_1 [L145] SORT_1 init_77_arg_1 = var_17; [L146] state_76 = init_77_arg_1 [L147] SORT_1 init_81_arg_1 = var_17; [L148] state_80 = init_81_arg_1 [L149] SORT_1 init_83_arg_1 = var_17; [L150] state_82 = init_83_arg_1 [L151] SORT_1 init_94_arg_1 = var_17; [L152] state_93 = init_94_arg_1 [L153] SORT_1 init_96_arg_1 = var_17; [L154] state_95 = init_96_arg_1 [L155] SORT_1 init_98_arg_1 = var_17; [L156] state_97 = init_98_arg_1 [L157] SORT_1 init_102_arg_1 = var_17; [L158] state_101 = init_102_arg_1 [L159] SORT_1 init_104_arg_1 = var_17; [L160] state_103 = init_104_arg_1 [L161] SORT_1 init_108_arg_1 = var_17; [L162] state_107 = init_108_arg_1 [L163] SORT_1 init_137_arg_1 = var_17; [L164] state_136 = init_137_arg_1 [L165] SORT_1 init_139_arg_1 = var_17; [L166] state_138 = init_139_arg_1 [L167] SORT_1 init_141_arg_1 = var_17; [L168] state_140 = init_141_arg_1 [L169] SORT_1 init_143_arg_1 = var_17; [L170] state_142 = init_143_arg_1 [L171] SORT_1 init_145_arg_1 = var_17; [L172] state_144 = init_145_arg_1 [L173] SORT_1 init_152_arg_1 = var_17; [L174] state_151 = init_152_arg_1 [L175] SORT_1 init_154_arg_1 = var_17; [L176] state_153 = init_154_arg_1 [L177] SORT_1 init_171_arg_1 = var_17; [L178] state_170 = init_171_arg_1 [L179] SORT_1 init_173_arg_1 = var_17; [L180] state_172 = init_173_arg_1 [L181] SORT_1 init_182_arg_1 = var_17; [L182] state_181 = init_182_arg_1 [L183] SORT_1 init_184_arg_1 = var_17; [L184] state_183 = init_184_arg_1 [L185] SORT_1 init_186_arg_1 = var_17; [L186] state_185 = init_186_arg_1 VAL [init_102_arg_1=0, init_104_arg_1=0, init_108_arg_1=0, init_137_arg_1=0, init_139_arg_1=0, init_141_arg_1=0, init_143_arg_1=0, init_145_arg_1=0, init_152_arg_1=0, init_154_arg_1=0, init_171_arg_1=0, init_173_arg_1=0, init_182_arg_1=0, init_184_arg_1=0, init_186_arg_1=0, init_19_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_27_arg_1=0, init_30_arg_1=0, init_33_arg_1=0, init_36_arg_1=0, init_48_arg_1=0, init_52_arg_1=0, init_71_arg_1=0, init_77_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_94_arg_1=0, init_96_arg_1=0, init_98_arg_1=0, mask_SORT_1=1, mask_SORT_122=7, mask_SORT_3=65535, mask_SORT_45=63, mask_SORT_5=255, mask_SORT_55=4294967295, mask_SORT_61=4294967295, mask_SORT_63=127, mask_SORT_7=31, mask_SORT_84=3, msb_SORT_1=1, msb_SORT_122=4, msb_SORT_3=32768, msb_SORT_45=32, msb_SORT_5=128, msb_SORT_55=2147483648, msb_SORT_61=16777216, msb_SORT_63=64, msb_SORT_7=16, msb_SORT_84=2, state_101=0, state_103=0, state_107=0, state_136=0, state_138=0, state_140=0, state_142=0, state_144=0, state_151=0, state_153=0, state_170=0, state_172=0, state_18=0, state_181=0, state_183=0, state_185=0, state_21=0, state_23=0, state_26=0, state_29=0, state_32=0, state_35=0, state_47=0, state_51=0, state_70=0, state_76=0, state_80=0, state_82=0, state_93=0, state_95=0, state_97=0, var_112=0, var_17=0, var_218=33, var_227=1, var_41=1, var_46=0, var_50=0, var_56=2, var_58=2, var_62=0, var_66=1] [L189] input_2 = __VERIFIER_nondet_uchar() [L190] input_4 = __VERIFIER_nondet_ushort() [L191] input_6 = __VERIFIER_nondet_uchar() [L192] input_8 = __VERIFIER_nondet_uchar() [L193] input_9 = __VERIFIER_nondet_uchar() [L194] input_10 = __VERIFIER_nondet_uchar() [L195] input_11 = __VERIFIER_nondet_uchar() [L196] input_12 = __VERIFIER_nondet_uchar() [L197] input_12 = input_12 & mask_SORT_1 [L198] input_13 = __VERIFIER_nondet_uchar() [L199] input_14 = __VERIFIER_nondet_uchar() [L200] input_15 = __VERIFIER_nondet_uchar() [L201] input_16 = __VERIFIER_nondet_uchar() [L202] input_85 = __VERIFIER_nondet_uchar() [L203] input_87 = __VERIFIER_nondet_uchar() [L204] input_89 = __VERIFIER_nondet_uchar() [L205] input_91 = __VERIFIER_nondet_uchar() [L206] input_99 = __VERIFIER_nondet_uchar() [L207] input_105 = __VERIFIER_nondet_uchar() [L208] input_134 = __VERIFIER_nondet_uchar() [L209] input_149 = __VERIFIER_nondet_uchar() [L210] input_162 = __VERIFIER_nondet_uchar() [L211] input_164 = __VERIFIER_nondet_uchar() [L212] input_166 = __VERIFIER_nondet_ushort() [L213] input_168 = __VERIFIER_nondet_uchar() [L214] input_179 = __VERIFIER_nondet_uchar() [L217] SORT_1 var_20_arg_0 = state_18; [L218] SORT_1 var_20 = ~var_20_arg_0; [L219] SORT_1 var_25_arg_0 = state_21; [L220] SORT_1 var_25_arg_1 = state_23; [L221] SORT_1 var_25 = var_25_arg_0 | var_25_arg_1; [L222] SORT_1 var_28_arg_0 = var_25; [L223] SORT_1 var_28_arg_1 = state_26; [L224] SORT_1 var_28 = var_28_arg_0 | var_28_arg_1; [L225] SORT_1 var_31_arg_0 = var_28; [L226] SORT_1 var_31_arg_1 = state_29; [L227] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L228] SORT_1 var_34_arg_0 = var_31; [L229] SORT_1 var_34_arg_1 = state_32; [L230] SORT_1 var_34 = var_34_arg_0 | var_34_arg_1; [L231] SORT_1 var_37_arg_0 = var_34; [L232] SORT_1 var_37_arg_1 = state_35; [L233] SORT_1 var_37 = var_37_arg_0 | var_37_arg_1; [L234] SORT_1 var_38_arg_0 = var_20; [L235] SORT_1 var_38_arg_1 = var_37; [L236] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L237] SORT_1 var_42_arg_0 = var_38; [L238] SORT_1 var_42 = ~var_42_arg_0; [L239] SORT_1 var_43_arg_0 = var_41; [L240] SORT_1 var_43_arg_1 = var_42; [L241] SORT_1 var_43 = var_43_arg_0 & var_43_arg_1; [L242] var_43 = var_43 & mask_SORT_1 [L243] SORT_1 bad_44_arg_0 = var_43; [L244] CALL __VERIFIER_assert(!(bad_44_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: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 23:44:03,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur --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 5d2e3d2da64545cb55955230543ccece093594c714793fa68629cfbe91e63b67 --- 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-38b53e6 [2022-11-25 23:44:06,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:44:06,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:44:06,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:44:06,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:44:06,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:44:06,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:44:06,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:44:06,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:44:06,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:44:06,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:44:06,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:44:06,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:44:06,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:44:06,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:44:06,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:44:06,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:44:06,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:44:06,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:44:06,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:44:06,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:44:06,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:44:06,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:44:06,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:44:06,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:44:06,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:44:06,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:44:06,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:44:06,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:44:06,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:44:06,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:44:06,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:44:06,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:44:06,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:44:06,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:44:06,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:44:06,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:44:06,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:44:06,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:44:06,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:44:06,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:44:06,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-25 23:44:06,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:44:06,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:44:06,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:44:06,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:44:06,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:44:06,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:44:06,234 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:44:06,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:44:06,235 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:44:06,235 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:44:06,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:44:06,237 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:44:06,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:44:06,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:44:06,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:44:06,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:44:06,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:44:06,239 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:44:06,239 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:44:06,239 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:44:06,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:44:06,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:44:06,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:44:06,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:44:06,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:44:06,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:44:06,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:44:06,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:44:06,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:44:06,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:44:06,243 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:44:06,243 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:44:06,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:44:06,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:44:06,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:44:06,245 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_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d2e3d2da64545cb55955230543ccece093594c714793fa68629cfbe91e63b67 [2022-11-25 23:44:06,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:44:06,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:44:06,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:44:06,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:44:06,698 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:44:06,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-25 23:44:09,849 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:44:10,181 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:44:10,182 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-25 23:44:10,191 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/data/820cba4cb/d96650a7a89e4916b91f536245b2353e/FLAG27d811b60 [2022-11-25 23:44:10,212 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/data/820cba4cb/d96650a7a89e4916b91f536245b2353e [2022-11-25 23:44:10,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:44:10,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:44:10,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:44:10,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:44:10,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:44:10,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:10,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0c2a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10, skipping insertion in model container [2022-11-25 23:44:10,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:10,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:44:10,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:44:10,488 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_a17b005c-3d14-48ec-b0a4-b464f2624b8c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1107,1120] [2022-11-25 23:44:10,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:44:10,726 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:44:10,737 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_a17b005c-3d14-48ec-b0a4-b464f2624b8c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1107,1120] [2022-11-25 23:44:10,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:44:10,892 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:44:10,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10 WrapperNode [2022-11-25 23:44:10,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:44:10,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:44:10,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:44:10,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:44:10,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:10,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,017 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 742 [2022-11-25 23:44:11,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:44:11,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:44:11,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:44:11,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:44:11,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:44:11,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:44:11,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:44:11,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:44:11,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (1/1) ... [2022-11-25 23:44:11,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:44:11,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:44:11,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:44:11,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:44:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:44:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:44:11,503 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:44:11,505 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:44:12,335 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:44:12,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:44:12,344 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:44:12,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:44:12 BoogieIcfgContainer [2022-11-25 23:44:12,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:44:12,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:44:12,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:44:12,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:44:12,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:44:10" (1/3) ... [2022-11-25 23:44:12,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156f40bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:44:12, skipping insertion in model container [2022-11-25 23:44:12,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:44:10" (2/3) ... [2022-11-25 23:44:12,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156f40bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:44:12, skipping insertion in model container [2022-11-25 23:44:12,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:44:12" (3/3) ... [2022-11-25 23:44:12,358 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-25 23:44:12,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:44:12,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:44:12,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:44:12,446 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;@742a5e77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:44:12,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:44:12,451 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) [2022-11-25 23:44:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:44:12,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:44:12,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:44:12,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:44:12,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:44:12,469 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-25 23:44:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:44:12,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649413768] [2022-11-25 23:44:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:44:12,486 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 [2022-11-25 23:44:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:44:12,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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) [2022-11-25 23:44:12,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:44:12,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 23:44:12,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:12,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:44:12,937 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:44:12,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649413768] [2022-11-25 23:44:12,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649413768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:44:12,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:44:12,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:44:12,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910272081] [2022-11-25 23:44:12,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:44:12,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:44:12,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:44:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:44:12,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:44:12,997 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) [2022-11-25 23:44:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:44:13,099 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-25 23:44:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:44:13,103 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 [2022-11-25 23:44:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:44:13,111 INFO L225 Difference]: With dead ends: 20 [2022-11-25 23:44:13,112 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 23:44:13,114 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 [2022-11-25 23:44:13,119 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:44:13,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:44:13,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 23:44:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-25 23:44:13,151 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) [2022-11-25 23:44:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-25 23:44:13,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-25 23:44:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:44:13,154 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-25 23:44:13,154 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) [2022-11-25 23:44:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-25 23:44:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:44:13,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:44:13,155 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:44:13,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:13,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:13,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:44:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:44:13,375 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-25 23:44:13,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:44:13,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579630241] [2022-11-25 23:44:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:44:13,379 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 [2022-11-25 23:44:13,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:44:13,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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) [2022-11-25 23:44:13,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:44:13,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 23:44:13,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:14,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:44:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:14,175 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:44:14,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579630241] [2022-11-25 23:44:14,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579630241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:44:14,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [513492479] [2022-11-25 23:44:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:44:14,176 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:44:14,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:44:14,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:44:14,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-25 23:44:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:44:14,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 23:44:14,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:14,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:44:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:15,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [513492479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:44:15,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088418662] [2022-11-25 23:44:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:44:15,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:44:15,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:44:15,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:44:15,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:44:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:44:15,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 23:44:15,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:15,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:44:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:15,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088418662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:44:15,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:44:15,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-25 23:44:15,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850980098] [2022-11-25 23:44:15,826 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:44:15,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:44:15,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:44:15,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:44:15,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:44:15,828 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:44:16,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:44:16,054 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-25 23:44:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:44:16,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:44:16,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:44:16,056 INFO L225 Difference]: With dead ends: 16 [2022-11-25 23:44:16,056 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 23:44:16,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:44:16,057 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:44:16,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:44:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 23:44:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-25 23:44:16,062 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) [2022-11-25 23:44:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-25 23:44:16,062 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-25 23:44:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:44:16,063 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-25 23:44:16,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:44:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-25 23:44:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:44:16,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:44:16,064 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 23:44:16,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:16,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 23:44:16,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:44:16,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 23:44:16,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:44:16,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:44:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-25 23:44:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:44:16,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268182126] [2022-11-25 23:44:16,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:44:16,682 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 [2022-11-25 23:44:16,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:44:16,683 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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) [2022-11-25 23:44:16,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:17,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:44:17,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:44:17,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 23:44:17,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:17,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:44:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:17,676 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:44:17,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268182126] [2022-11-25 23:44:17,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268182126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:44:17,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [822788547] [2022-11-25 23:44:17,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:44:17,677 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:44:17,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:44:17,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:44:17,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-25 23:44:18,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:44:18,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:44:18,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 23:44:18,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:18,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:44:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:18,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [822788547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:44:18,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136520007] [2022-11-25 23:44:18,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:44:18,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:44:18,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:44:18,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:44:18,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:44:19,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:44:19,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:44:19,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 23:44:19,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:19,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:44:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:19,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136520007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:44:19,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:44:19,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 12 [2022-11-25 23:44:19,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691265930] [2022-11-25 23:44:19,735 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:44:19,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:44:19,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:44:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:44:19,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:44:19,740 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2022-11-25 23:44:20,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:44:20,081 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-25 23:44:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:44:20,082 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 [2022-11-25 23:44:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:44:20,083 INFO L225 Difference]: With dead ends: 19 [2022-11-25 23:44:20,083 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 23:44:20,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:44:20,085 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:44:20,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:44:20,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 23:44:20,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-25 23:44:20,090 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) [2022-11-25 23:44:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-25 23:44:20,091 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-25 23:44:20,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:44:20,091 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-25 23:44:20,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2022-11-25 23:44:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-25 23:44:20,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:44:20,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:44:20,092 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-25 23:44:20,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:44:20,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:44:20,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:20,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:20,702 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:44:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:44:20,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-25 23:44:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:44:20,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075553025] [2022-11-25 23:44:20,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:44:20,707 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 [2022-11-25 23:44:20,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:44:20,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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) [2022-11-25 23:44:20,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:21,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:44:21,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:44:21,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-25 23:44:21,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:21,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:44:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:22,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:44:22,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075553025] [2022-11-25 23:44:22,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075553025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:44:22,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1543110657] [2022-11-25 23:44:22,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:44:22,294 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:44:22,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:44:22,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:44:22,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-25 23:44:23,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:44:23,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:44:23,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-25 23:44:23,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:23,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:44:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:24,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1543110657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:44:24,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816346680] [2022-11-25 23:44:24,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:44:24,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:44:24,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:44:24,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:44:24,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 23:44:25,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:44:25,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:44:25,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-25 23:44:25,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:25,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:44:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:26,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816346680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:44:26,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:44:26,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 15 [2022-11-25 23:44:26,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610710558] [2022-11-25 23:44:26,222 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:44:26,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 23:44:26,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:44:26,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 23:44:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:44:26,230 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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) [2022-11-25 23:44:26,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:44:26,660 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-25 23:44:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:44:26,661 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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 [2022-11-25 23:44:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:44:26,662 INFO L225 Difference]: With dead ends: 22 [2022-11-25 23:44:26,662 INFO L226 Difference]: Without dead ends: 20 [2022-11-25 23:44:26,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:44:26,664 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:44:26,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 37 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:44:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-25 23:44:26,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-25 23:44:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:44:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-25 23:44:26,671 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-25 23:44:26,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:44:26,671 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-25 23:44:26,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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) [2022-11-25 23:44:26,672 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-25 23:44:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 23:44:26,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:44:26,673 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-25 23:44:26,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 23:44:26,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:27,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-25 23:44:27,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 23:44:27,284 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:44:27,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:44:27,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-25 23:44:27,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:44:27,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281600669] [2022-11-25 23:44:27,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:44:27,286 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 [2022-11-25 23:44:27,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:44:27,287 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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) [2022-11-25 23:44:27,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 [2022-11-25 23:44:28,083 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:44:28,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:44:28,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 160 conjunts are in the unsatisfiable core [2022-11-25 23:44:28,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:44:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:44:29,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:45:52,795 WARN L233 SmtUtils]: Spent 1.29m on a formula simplification. DAG size of input: 612 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:45:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:55,927 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:45:55,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281600669] [2022-11-25 23:45:55,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281600669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:45:55,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2128819056] [2022-11-25 23:45:55,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:45:55,928 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:45:55,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:45:55,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:45:55,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-25 23:45:57,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:45:57,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:45:57,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 142 conjunts are in the unsatisfiable core [2022-11-25 23:45:57,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:45:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:58,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:46:41,997 WARN L233 SmtUtils]: Spent 32.80s on a formula simplification. DAG size of input: 510 DAG size of output: 274 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:46:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:42,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2128819056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:46:42,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771964301] [2022-11-25 23:46:42,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:46:42,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:46:42,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:42,115 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:46:42,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 23:46:42,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:46:42,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:46:42,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-25 23:46:42,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:46:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:43,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:47:24,561 WARN L233 SmtUtils]: Spent 23.64s on a formula simplification. DAG size of input: 444 DAG size of output: 190 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:47:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:25,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771964301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:47:25,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:47:25,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 8, 9, 9] total 24 [2022-11-25 23:47:25,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369745935] [2022-11-25 23:47:25,167 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:47:25,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 23:47:25,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:47:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 23:47:25,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=461, Unknown=9, NotChecked=0, Total=552 [2022-11-25 23:47:25,169 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 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) [2022-11-25 23:47:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:26,255 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-25 23:47:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:47:26,256 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 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 17 [2022-11-25 23:47:26,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:26,257 INFO L225 Difference]: With dead ends: 25 [2022-11-25 23:47:26,257 INFO L226 Difference]: Without dead ends: 23 [2022-11-25 23:47:26,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 164.3s TimeCoverageRelationStatistics Valid=175, Invalid=686, Unknown=9, NotChecked=0, Total=870 [2022-11-25 23:47:26,260 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:26,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 39 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:47:26,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-25 23:47:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-25 23:47:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-11-25 23:47:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-25 23:47:26,274 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-11-25 23:47:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:26,274 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-25 23:47:26,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 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) [2022-11-25 23:47:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-25 23:47:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 23:47:26,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:26,276 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-11-25 23:47:26,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:26,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:26,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:26,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:26,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:47:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 5 times [2022-11-25 23:47:26,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:47:26,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883755554] [2022-11-25 23:47:26,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 23:47:26,882 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 [2022-11-25 23:47:26,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:47:26,883 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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) [2022-11-25 23:47:26,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/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 (15)] Waiting until timeout for monitored process [2022-11-25 23:47:27,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-25 23:47:27,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:47:27,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 291 conjunts are in the unsatisfiable core [2022-11-25 23:47:27,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:33,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:50:51,441 WARN L233 SmtUtils]: Spent 3.16m on a formula simplification. DAG size of input: 606 DAG size of output: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:51:00,350 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 296 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:53:18,622 WARN L233 SmtUtils]: Spent 1.69m on a formula simplification. DAG size of input: 1162 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:53:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:53:22,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:53:22,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883755554] [2022-11-25 23:53:22,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883755554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:53:22,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [309190981] [2022-11-25 23:53:22,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 23:53:22,061 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:53:22,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:53:22,063 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:53:22,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17b005c-3d14-48ec-b0a4-b464f2624b8c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-25 23:53:24,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-25 23:53:24,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:53:24,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 265 conjunts are in the unsatisfiable core [2022-11-25 23:53:24,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:53:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:53:26,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:55:15,412 WARN L233 SmtUtils]: Spent 1.43m on a formula simplification. DAG size of input: 497 DAG size of output: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)