./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f6d5806dc2a069b52e5e35ee04f1ef92bf49979b38b271db0ee312abca8de37e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:49:00,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:49:00,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:49:00,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:49:00,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:49:00,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:49:00,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:49:00,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:49:00,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:49:00,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:49:00,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:49:00,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:49:00,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:49:00,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:49:00,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:49:00,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:49:00,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:49:00,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:49:00,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:49:00,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:49:00,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:49:00,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:49:00,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:49:00,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:49:00,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:49:00,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:49:00,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:49:00,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:49:00,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:49:00,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:49:00,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:49:00,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:49:00,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:49:00,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:49:00,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:49:00,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:49:00,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:49:00,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:49:00,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:49:00,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:49:00,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:49:00,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 13:49:00,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:49:00,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:49:00,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:49:00,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:49:00,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:49:00,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:49:00,648 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:49:00,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:49:00,648 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:49:00,648 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:49:00,648 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:49:00,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:49:00,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:49:00,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:49:00,649 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:49:00,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:49:00,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:49:00,650 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:49:00,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:49:00,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:49:00,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:49:00,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:49:00,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:49:00,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:49:00,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:49:00,651 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:49:00,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:49:00,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:49:00,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:49:00,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:49:00,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:49:00,652 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:49:00,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:49:00,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:49:00,653 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:49:00,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:49:00,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:49:00,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:49:00,653 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_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6d5806dc2a069b52e5e35ee04f1ef92bf49979b38b271db0ee312abca8de37e [2022-12-14 13:49:00,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:49:00,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:49:00,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:49:00,877 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:49:00,877 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:49:00,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-12-14 13:49:03,546 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:49:03,701 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:49:03,702 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-12-14 13:49:03,710 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/data/82c5807c7/db471a0fe2094b99a2c254fb431c0d51/FLAG4ac339da1 [2022-12-14 13:49:03,723 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/data/82c5807c7/db471a0fe2094b99a2c254fb431c0d51 [2022-12-14 13:49:03,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:49:03,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:49:03,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:49:03,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:49:03,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:49:03,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:49:03" (1/1) ... [2022-12-14 13:49:03,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d56ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:03, skipping insertion in model container [2022-12-14 13:49:03,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:49:03" (1/1) ... [2022-12-14 13:49:03,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:49:03,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:49:03,896 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_9dea971f-c0ec-4577-94ff-50dae4e46685/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1107,1120] [2022-12-14 13:49:03,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:49:03,966 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:49:03,977 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_9dea971f-c0ec-4577-94ff-50dae4e46685/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1107,1120] [2022-12-14 13:49:04,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:49:04,027 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:49:04,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04 WrapperNode [2022-12-14 13:49:04,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:49:04,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:49:04,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:49:04,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:49:04,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,072 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 261 [2022-12-14 13:49:04,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:49:04,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:49:04,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:49:04,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:49:04,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:49:04,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:49:04,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:49:04,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:49:04,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (1/1) ... [2022-12-14 13:49:04,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:49:04,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:49:04,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:49:04,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:49:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:49:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:49:04,254 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:49:04,256 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:49:04,725 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:49:04,741 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:49:04,742 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:49:04,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:49:04 BoogieIcfgContainer [2022-12-14 13:49:04,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:49:04,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:49:04,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:49:04,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:49:04,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:49:03" (1/3) ... [2022-12-14 13:49:04,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cae7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:49:04, skipping insertion in model container [2022-12-14 13:49:04,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:04" (2/3) ... [2022-12-14 13:49:04,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cae7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:49:04, skipping insertion in model container [2022-12-14 13:49:04,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:49:04" (3/3) ... [2022-12-14 13:49:04,750 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-12-14 13:49:04,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:49:04,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:49:04,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:49:04,802 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;@76896d9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:49:04,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:49:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:49:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 13:49:04,809 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:49:04,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 13:49:04,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:49:04,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:49:04,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 13:49:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:49:04,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592233309] [2022-12-14 13:49:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:49:04,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:49:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:49:05,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:49:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:49:05,131 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:49:05,133 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:49:05,134 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:49:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:49:05,140 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 13:49:05,143 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:49:05,157 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 13:49:05,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:49:05 BoogieIcfgContainer [2022-12-14 13:49:05,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:49:05,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:49:05,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:49:05,165 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:49:05,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:49:04" (3/4) ... [2022-12-14 13:49:05,168 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 13:49:05,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:49:05,169 INFO L158 Benchmark]: Toolchain (without parser) took 1440.70ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 101.1MB in the beginning and 73.8MB in the end (delta: 27.3MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2022-12-14 13:49:05,170 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:49:05,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.46ms. Allocated memory is still 136.3MB. Free memory was 101.1MB in the beginning and 85.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 13:49:05,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.11ms. Allocated memory is still 136.3MB. Free memory was 85.5MB in the beginning and 82.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:49:05,171 INFO L158 Benchmark]: Boogie Preprocessor took 31.18ms. Allocated memory is still 136.3MB. Free memory was 82.0MB in the beginning and 79.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:49:05,172 INFO L158 Benchmark]: RCFGBuilder took 638.71ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 79.9MB in the beginning and 112.6MB in the end (delta: -32.7MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2022-12-14 13:49:05,172 INFO L158 Benchmark]: TraceAbstraction took 418.86ms. Allocated memory is still 163.6MB. Free memory was 111.5MB in the beginning and 73.8MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 13:49:05,173 INFO L158 Benchmark]: Witness Printer took 3.79ms. Allocated memory is still 163.6MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:49:05,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.46ms. Allocated memory is still 136.3MB. Free memory was 101.1MB in the beginning and 85.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.11ms. Allocated memory is still 136.3MB. Free memory was 85.5MB in the beginning and 82.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.18ms. Allocated memory is still 136.3MB. Free memory was 82.0MB in the beginning and 79.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 638.71ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 79.9MB in the beginning and 112.6MB in the end (delta: -32.7MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * TraceAbstraction took 418.86ms. Allocated memory is still 163.6MB. Free memory was 111.5MB in the beginning and 73.8MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 3.79ms. Allocated memory is still 163.6MB. Free memory is still 73.8MB. 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 106, overapproximation of bitwiseOr at line 80, overapproximation of bitwiseAnd at line 68. 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 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_1 var_6 = 0; [L32] const SORT_1 var_16 = 1; [L33] const SORT_3 var_33 = 0; [L34] const SORT_3 var_36 = 27; [L35] const SORT_3 var_44 = 85; [L36] const SORT_3 var_47 = 67; [L37] const SORT_3 var_50 = 78; [L39] SORT_1 input_2; [L40] SORT_3 input_4; [L41] SORT_1 input_5; [L42] SORT_3 input_39; [L44] SORT_1 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_3 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L49] SORT_3 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L51] SORT_1 init_8_arg_1 = var_6; [L52] state_7 = init_8_arg_1 [L53] SORT_1 init_10_arg_1 = var_6; [L54] state_9 = init_10_arg_1 [L55] SORT_1 init_13_arg_1 = var_6; [L56] state_12 = init_13_arg_1 [L57] SORT_1 init_18_arg_1 = var_16; [L58] state_17 = init_18_arg_1 [L59] SORT_3 init_35_arg_1 = var_33; [L60] state_34 = init_35_arg_1 [L61] SORT_3 init_43_arg_1 = var_33; [L62] state_42 = init_43_arg_1 VAL [init_10_arg_1=0, init_13_arg_1=0, init_18_arg_1=1, init_35_arg_1=0, init_43_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_3=255, msb_SORT_1=1, msb_SORT_3=128, state_12=0, state_17=1, state_34=0, state_42=0, state_7=0, state_9=0, var_16=1, var_33=0, var_36=27, var_44=85, var_47=67, var_50=78, var_6=0] [L65] input_2 = __VERIFIER_nondet_uchar() [L66] input_4 = __VERIFIER_nondet_uchar() [L67] input_5 = __VERIFIER_nondet_uchar() [L68] input_5 = input_5 & mask_SORT_1 [L69] input_39 = __VERIFIER_nondet_uchar() [L72] SORT_1 var_11_arg_0 = state_7; [L73] SORT_1 var_11_arg_1 = state_9; [L74] SORT_1 var_11 = var_11_arg_0 & var_11_arg_1; [L75] SORT_1 var_14_arg_0 = state_7; [L76] SORT_1 var_14_arg_1 = state_12; [L77] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L78] SORT_1 var_15_arg_0 = var_11; [L79] SORT_1 var_15_arg_1 = var_14; [L80] SORT_1 var_15 = var_15_arg_0 | var_15_arg_1; [L81] SORT_1 var_19_arg_0 = state_7; [L82] SORT_1 var_19_arg_1 = state_17; [L83] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L84] SORT_1 var_20_arg_0 = var_15; [L85] SORT_1 var_20_arg_1 = var_19; [L86] SORT_1 var_20 = var_20_arg_0 | var_20_arg_1; [L87] SORT_1 var_21_arg_0 = state_9; [L88] SORT_1 var_21_arg_1 = state_12; [L89] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L90] SORT_1 var_22_arg_0 = var_20; [L91] SORT_1 var_22_arg_1 = var_21; [L92] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L93] SORT_1 var_23_arg_0 = state_9; [L94] SORT_1 var_23_arg_1 = state_17; [L95] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L96] SORT_1 var_24_arg_0 = var_22; [L97] SORT_1 var_24_arg_1 = var_23; [L98] SORT_1 var_24 = var_24_arg_0 | var_24_arg_1; [L99] SORT_1 var_25_arg_0 = state_12; [L100] SORT_1 var_25_arg_1 = state_17; [L101] SORT_1 var_25 = var_25_arg_0 & var_25_arg_1; [L102] SORT_1 var_26_arg_0 = var_24; [L103] SORT_1 var_26_arg_1 = var_25; [L104] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L105] SORT_1 var_27_arg_0 = var_26; [L106] SORT_1 var_27 = ~var_27_arg_0; [L107] SORT_1 var_30_arg_0 = var_27; [L108] SORT_1 var_30 = ~var_30_arg_0; [L109] SORT_1 var_31_arg_0 = var_16; [L110] SORT_1 var_31_arg_1 = var_30; [L111] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L112] var_31 = var_31 & mask_SORT_1 [L113] SORT_1 bad_32_arg_0 = var_31; [L114] CALL __VERIFIER_assert(!(bad_32_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 13:49:05,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f6d5806dc2a069b52e5e35ee04f1ef92bf49979b38b271db0ee312abca8de37e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:49:06,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:49:06,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:49:06,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:49:06,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:49:06,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:49:06,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:49:06,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:49:06,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:49:06,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:49:06,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:49:06,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:49:06,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:49:06,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:49:06,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:49:06,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:49:06,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:49:06,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:49:06,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:49:06,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:49:06,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:49:06,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:49:06,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:49:06,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:49:06,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:49:06,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:49:06,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:49:06,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:49:06,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:49:06,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:49:06,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:49:06,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:49:06,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:49:06,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:49:06,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:49:06,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:49:06,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:49:06,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:49:06,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:49:06,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:49:06,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:49:06,891 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 13:49:06,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:49:06,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:49:06,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:49:06,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:49:06,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:49:06,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:49:06,915 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:49:06,915 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:49:06,916 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:49:06,916 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:49:06,916 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:49:06,916 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:49:06,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:49:06,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:49:06,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:49:06,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:49:06,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:49:06,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 13:49:06,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 13:49:06,918 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 13:49:06,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:49:06,918 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:49:06,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:49:06,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:49:06,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 13:49:06,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:49:06,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:49:06,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:49:06,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:49:06,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:49:06,920 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 13:49:06,920 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 13:49:06,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:49:06,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:49:06,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 13:49:06,921 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_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6d5806dc2a069b52e5e35ee04f1ef92bf49979b38b271db0ee312abca8de37e [2022-12-14 13:49:07,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:49:07,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:49:07,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:49:07,176 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:49:07,176 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:49:07,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-12-14 13:49:09,795 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:49:09,972 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:49:09,973 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-12-14 13:49:09,982 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/data/767cfde07/f4d80f135b554416a1022a8253a73549/FLAGd9c6defd1 [2022-12-14 13:49:09,996 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/data/767cfde07/f4d80f135b554416a1022a8253a73549 [2022-12-14 13:49:09,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:49:10,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:49:10,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:49:10,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:49:10,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:49:10,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:49:09" (1/1) ... [2022-12-14 13:49:10,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797e499e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10, skipping insertion in model container [2022-12-14 13:49:10,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:49:09" (1/1) ... [2022-12-14 13:49:10,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:49:10,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:49:10,150 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_9dea971f-c0ec-4577-94ff-50dae4e46685/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1107,1120] [2022-12-14 13:49:10,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:49:10,228 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:49:10,238 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_9dea971f-c0ec-4577-94ff-50dae4e46685/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1107,1120] [2022-12-14 13:49:10,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:49:10,289 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:49:10,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10 WrapperNode [2022-12-14 13:49:10,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:49:10,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:49:10,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:49:10,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:49:10,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,325 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 261 [2022-12-14 13:49:10,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:49:10,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:49:10,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:49:10,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:49:10,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,345 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:49:10,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:49:10,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:49:10,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:49:10,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (1/1) ... [2022-12-14 13:49:10,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:49:10,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:49:10,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:49:10,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:49:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:49:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:49:10,491 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:49:10,493 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:49:10,723 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:49:10,730 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:49:10,730 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:49:10,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:49:10 BoogieIcfgContainer [2022-12-14 13:49:10,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:49:10,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:49:10,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:49:10,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:49:10,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:49:09" (1/3) ... [2022-12-14 13:49:10,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f440040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:49:10, skipping insertion in model container [2022-12-14 13:49:10,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:49:10" (2/3) ... [2022-12-14 13:49:10,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f440040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:49:10, skipping insertion in model container [2022-12-14 13:49:10,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:49:10" (3/3) ... [2022-12-14 13:49:10,741 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-12-14 13:49:10,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:49:10,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:49:10,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:49:10,796 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;@769d9f27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:49:10,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:49:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:49:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 13:49:10,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:49:10,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 13:49:10,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:49:10,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:49:10,811 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 13:49:10,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:49:10,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111001623] [2022-12-14 13:49:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:49:10,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:49:10,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:49:10,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:49:10,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 13:49:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:49:10,913 WARN L261 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-14 13:49:10,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:49:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:49:11,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:49:11,040 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:49:11,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111001623] [2022-12-14 13:49:11,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111001623] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:49:11,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:49:11,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:49:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270826208] [2022-12-14 13:49:11,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:49:11,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:49:11,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:49:11,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:49:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:49:11,067 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:49:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:49:11,139 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 13:49:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:49:11,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 13:49:11,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:49:11,148 INFO L225 Difference]: With dead ends: 20 [2022-12-14 13:49:11,149 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 13:49:11,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:49:11,154 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:49:11,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:49:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 13:49:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 13:49:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:49:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 13:49:11,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 13:49:11,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:49:11,182 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 13:49:11,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:49:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 13:49:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 13:49:11,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:49:11,182 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 13:49:11,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:49:11,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:49:11,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:49:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:49:11,387 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 13:49:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:49:11,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14428312] [2022-12-14 13:49:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:49:11,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:49:11,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:49:11,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:49:11,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 13:49:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:49:11,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-14 13:49:11,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:49:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:49:12,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:49:21,002 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:50:01,693 WARN L233 SmtUtils]: Spent 34.46s on a formula simplification. DAG size of input: 217 DAG size of output: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:50:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:50:01,701 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:50:01,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14428312] [2022-12-14 13:50:01,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14428312] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:50:01,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1441186041] [2022-12-14 13:50:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:50:01,701 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:50:01,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:50:01,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:50:01,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 13:50:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:50:01,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 87 conjunts are in the unsatisfiable core [2022-12-14 13:50:01,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:50:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:50:02,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:50:36,984 WARN L233 SmtUtils]: Spent 10.37s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:50:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:50:37,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1441186041] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:50:37,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477391604] [2022-12-14 13:50:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:50:37,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:50:37,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:50:37,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:50:37,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:50:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:50:37,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 82 conjunts are in the unsatisfiable core [2022-12-14 13:50:37,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:50:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:50:37,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:51:17,968 WARN L233 SmtUtils]: Spent 12.09s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:51:38,256 WARN L233 SmtUtils]: Spent 12.11s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:51:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:51:38,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477391604] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:51:38,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:51:38,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 6, 6] total 16 [2022-12-14 13:51:38,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375894161] [2022-12-14 13:51:38,290 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:51:38,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 13:51:38,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:51:38,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 13:51:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=144, Unknown=28, NotChecked=0, Total=240 [2022-12-14 13:51:38,294 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:51:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:51:38,759 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 13:51:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 13:51:38,760 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 13:51:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:51:38,760 INFO L225 Difference]: With dead ends: 16 [2022-12-14 13:51:38,760 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 13:51:38,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 144.5s TimeCoverageRelationStatistics Valid=102, Invalid=212, Unknown=28, NotChecked=0, Total=342 [2022-12-14 13:51:38,762 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:51:38,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:51:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 13:51:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 13:51:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:51:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 13:51:38,764 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 13:51:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:51:38,765 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 13:51:38,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:51:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 13:51:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 13:51:38,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:51:38,765 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 13:51:38,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:51:38,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 13:51:39,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 13:51:39,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 13:51:39,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:51:39,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:51:39,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 13:51:39,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:51:39,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393793507] [2022-12-14 13:51:39,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:51:39,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:51:39,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:51:39,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:51:39,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 13:51:39,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:51:39,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:51:39,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 118 conjunts are in the unsatisfiable core [2022-12-14 13:51:39,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:51:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:51:39,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:52:10,823 WARN L233 SmtUtils]: Spent 28.27s on a formula simplification that was a NOOP. DAG size: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:52:59,705 WARN L233 SmtUtils]: Spent 42.59s on a formula simplification. DAG size of input: 334 DAG size of output: 205 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:54:07,320 WARN L233 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 493 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:55:28,282 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 410 DAG size of output: 376 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:55:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:55:28,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:55:28,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393793507] [2022-12-14 13:55:28,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393793507] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:55:28,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [41408318] [2022-12-14 13:55:28,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:55:28,293 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:55:28,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:55:28,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:55:28,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 13:55:28,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:55:28,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:55:28,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 124 conjunts are in the unsatisfiable core [2022-12-14 13:55:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:55:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:55:28,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:56:17,752 WARN L233 SmtUtils]: Spent 10.32s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:58:17,795 WARN L233 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 377 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:58:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:58:18,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [41408318] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:58:18,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971978624] [2022-12-14 13:58:18,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:58:18,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:58:18,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:58:18,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:58:18,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:58:18,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:58:18,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:58:18,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 121 conjunts are in the unsatisfiable core [2022-12-14 13:58:18,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:58:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:58:18,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:59:15,630 WARN L233 SmtUtils]: Spent 12.11s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:02:30,013 WARN L233 SmtUtils]: Spent 2.82m on a formula simplification. DAG size of input: 380 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:04:10,875 WARN L233 SmtUtils]: Spent 1.54m on a formula simplification that was a NOOP. DAG size: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:04:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:04:11,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971978624] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:04:11,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:04:11,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6, 6, 7, 7] total 23 [2022-12-14 14:04:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115970393] [2022-12-14 14:04:11,042 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:04:11,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 14:04:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:04:11,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 14:04:11,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=302, Unknown=69, NotChecked=0, Total=506 [2022-12-14 14:04:11,045 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:04:11,631 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-12-14 14:04:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 14:04:11,633 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 14:04:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:04:11,633 INFO L225 Difference]: With dead ends: 19 [2022-12-14 14:04:11,633 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 14:04:11,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 745.7s TimeCoverageRelationStatistics Valid=200, Invalid=433, Unknown=69, NotChecked=0, Total=702 [2022-12-14 14:04:11,635 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:04:11,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:04:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 14:04:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 14:04:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:11,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 14:04:11,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-12-14 14:04:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:04:11,640 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 14:04:11,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:04:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 14:04:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 14:04:11,641 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:04:11,641 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 14:04:11,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 14:04:11,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 14:04:12,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-14 14:04:12,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:04:12,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:04:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:04:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-12-14 14:04:12,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:04:12,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902029127] [2022-12-14 14:04:12,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:04:12,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:04:12,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:04:12,251 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:04:12,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dea971f-c0ec-4577-94ff-50dae4e46685/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 14:04:12,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 14:04:12,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:04:12,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 216 conjunts are in the unsatisfiable core [2022-12-14 14:04:12,403 INFO L286 TraceCheckSpWp]: Computing forward predicates...