./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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_8f78118d-6347-485c-8c37-fa4248db5871/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 022102d12c6d0c5097c2cad24d28685bf677a3959fa1edca410f13c7d5b845fd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:16:45,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:16:45,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:16:45,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:16:45,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:16:45,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:16:45,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:16:45,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:16:45,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:16:45,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:16:45,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:16:45,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:16:45,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:16:45,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:16:45,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:16:45,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:16:45,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:16:45,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:16:45,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:16:45,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:16:45,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:16:45,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:16:45,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:16:45,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:16:45,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:16:45,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:16:45,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:16:45,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:16:45,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:16:45,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:16:45,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:16:45,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:16:45,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:16:45,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:16:45,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:16:45,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:16:45,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:16:45,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:16:45,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:16:45,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:16:45,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:16:45,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 14:16:45,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:16:45,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:16:45,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:16:45,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:16:45,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:16:45,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:16:45,876 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:16:45,880 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:16:45,881 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:16:45,881 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:16:45,881 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:16:45,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:16:45,881 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:16:45,882 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:16:45,882 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:16:45,882 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:16:45,882 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:16:45,882 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:16:45,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:16:45,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:16:45,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:16:45,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:16:45,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:16:45,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:16:45,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:16:45,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:16:45,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:16:45,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:16:45,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:16:45,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:16:45,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:16:45,884 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:16:45,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:16:45,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:16:45,885 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:16:45,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:16:45,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:16:45,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:16:45,885 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_8f78118d-6347-485c-8c37-fa4248db5871/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022102d12c6d0c5097c2cad24d28685bf677a3959fa1edca410f13c7d5b845fd [2022-12-14 14:16:46,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:16:46,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:16:46,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:16:46,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:16:46,096 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:16:46,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-12-14 14:16:48,777 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:16:48,998 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:16:48,999 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-12-14 14:16:49,014 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/data/7ba28b249/0c7a8f1bebb642cd97347f2497ca4022/FLAGda7fa8021 [2022-12-14 14:16:49,025 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/data/7ba28b249/0c7a8f1bebb642cd97347f2497ca4022 [2022-12-14 14:16:49,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:16:49,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:16:49,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:16:49,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:16:49,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:16:49,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4999f91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49, skipping insertion in model container [2022-12-14 14:16:49,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:16:49,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:16:49,198 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_8f78118d-6347-485c-8c37-fa4248db5871/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c[1107,1120] [2022-12-14 14:16:49,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:16:49,404 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:16:49,414 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_8f78118d-6347-485c-8c37-fa4248db5871/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c[1107,1120] [2022-12-14 14:16:49,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:16:49,596 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:16:49,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49 WrapperNode [2022-12-14 14:16:49,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:16:49,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:16:49,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:16:49,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:16:49,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,710 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1795 [2022-12-14 14:16:49,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:16:49,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:16:49,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:16:49,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:16:49,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,760 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:16:49,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:16:49,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:16:49,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:16:49,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (1/1) ... [2022-12-14 14:16:49,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:16:49,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:16:49,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:16:49,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:16:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:16:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:16:50,134 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:16:50,136 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:19:10,651 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:19:10,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:19:10,673 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:19:10,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:19:10 BoogieIcfgContainer [2022-12-14 14:19:10,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:19:10,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:19:10,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:19:10,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:19:10,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:16:49" (1/3) ... [2022-12-14 14:19:10,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f782a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:19:10, skipping insertion in model container [2022-12-14 14:19:10,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:16:49" (2/3) ... [2022-12-14 14:19:10,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f782a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:19:10, skipping insertion in model container [2022-12-14 14:19:10,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:19:10" (3/3) ... [2022-12-14 14:19:10,681 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-12-14 14:19:10,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:19:10,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:19:10,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:19:10,732 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;@1e7ac42d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:19:10,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:19:10,735 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 14:19:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:19:10,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:19:10,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:19:10,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:19:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:19:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 14:19:10,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:19:10,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184839391] [2022-12-14 14:19:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:19:10,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:19:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:19:10,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:19:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:19:11,056 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:19:11,057 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:19:11,058 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 14:19:11,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:19:11,063 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 14:19:11,065 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:19:11,081 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 14:19:11,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:19:11 BoogieIcfgContainer [2022-12-14 14:19:11,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:19:11,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:19:11,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:19:11,092 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:19:11,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:19:10" (3/4) ... [2022-12-14 14:19:11,095 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:19:11,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:19:11,096 INFO L158 Benchmark]: Toolchain (without parser) took 142067.80ms. Allocated memory was 125.8MB in the beginning and 943.7MB in the end (delta: 817.9MB). Free memory was 88.1MB in the beginning and 427.9MB in the end (delta: -339.8MB). Peak memory consumption was 478.5MB. Max. memory is 16.1GB. [2022-12-14 14:19:11,097 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory was 96.2MB in the beginning and 96.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:19:11,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.79ms. Allocated memory was 125.8MB in the beginning and 153.1MB in the end (delta: 27.3MB). Free memory was 88.1MB in the beginning and 105.9MB in the end (delta: -17.8MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2022-12-14 14:19:11,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.18ms. Allocated memory is still 153.1MB. Free memory was 105.9MB in the beginning and 86.2MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 14:19:11,099 INFO L158 Benchmark]: Boogie Preprocessor took 82.42ms. Allocated memory is still 153.1MB. Free memory was 86.2MB in the beginning and 77.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 14:19:11,099 INFO L158 Benchmark]: RCFGBuilder took 140880.69ms. Allocated memory was 153.1MB in the beginning and 943.7MB in the end (delta: 790.6MB). Free memory was 77.1MB in the beginning and 481.4MB in the end (delta: -404.3MB). Peak memory consumption was 552.5MB. Max. memory is 16.1GB. [2022-12-14 14:19:11,100 INFO L158 Benchmark]: TraceAbstraction took 414.66ms. Allocated memory is still 943.7MB. Free memory was 480.3MB in the beginning and 429.0MB in the end (delta: 51.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-12-14 14:19:11,100 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 943.7MB. Free memory was 429.0MB in the beginning and 427.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:19:11,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory was 96.2MB in the beginning and 96.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 567.79ms. Allocated memory was 125.8MB in the beginning and 153.1MB in the end (delta: 27.3MB). Free memory was 88.1MB in the beginning and 105.9MB in the end (delta: -17.8MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.18ms. Allocated memory is still 153.1MB. Free memory was 105.9MB in the beginning and 86.2MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.42ms. Allocated memory is still 153.1MB. Free memory was 86.2MB in the beginning and 77.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 140880.69ms. Allocated memory was 153.1MB in the beginning and 943.7MB in the end (delta: 790.6MB). Free memory was 77.1MB in the beginning and 481.4MB in the end (delta: -404.3MB). Peak memory consumption was 552.5MB. Max. memory is 16.1GB. * TraceAbstraction took 414.66ms. Allocated memory is still 943.7MB. Free memory was 480.3MB in the beginning and 429.0MB in the end (delta: 51.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 943.7MB. Free memory was 429.0MB in the beginning and 427.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 192, overapproximation of bitwiseOr at line 200, overapproximation of bitwiseAnd at line 182. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 3); [L32] const SORT_9 msb_SORT_9 = (SORT_9)1 << (3 - 1); [L34] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 12); [L35] const SORT_44 msb_SORT_44 = (SORT_44)1 << (12 - 1); [L37] const SORT_98 mask_SORT_98 = (SORT_98)-1 >> (sizeof(SORT_98) * 8 - 17); [L38] const SORT_98 msb_SORT_98 = (SORT_98)1 << (17 - 1); [L40] const SORT_99 mask_SORT_99 = (SORT_99)-1 >> (sizeof(SORT_99) * 8 - 5); [L41] const SORT_99 msb_SORT_99 = (SORT_99)1 << (5 - 1); [L43] const SORT_102 mask_SORT_102 = (SORT_102)-1 >> (sizeof(SORT_102) * 8 - 9); [L44] const SORT_102 msb_SORT_102 = (SORT_102)1 << (9 - 1); [L46] const SORT_104 mask_SORT_104 = (SORT_104)-1 >> (sizeof(SORT_104) * 8 - 10); [L47] const SORT_104 msb_SORT_104 = (SORT_104)1 << (10 - 1); [L49] const SORT_107 mask_SORT_107 = (SORT_107)-1 >> (sizeof(SORT_107) * 8 - 11); [L50] const SORT_107 msb_SORT_107 = (SORT_107)1 << (11 - 1); [L52] const SORT_112 mask_SORT_112 = (SORT_112)-1 >> (sizeof(SORT_112) * 8 - 13); [L53] const SORT_112 msb_SORT_112 = (SORT_112)1 << (13 - 1); [L55] const SORT_115 mask_SORT_115 = (SORT_115)-1 >> (sizeof(SORT_115) * 8 - 14); [L56] const SORT_115 msb_SORT_115 = (SORT_115)1 << (14 - 1); [L58] const SORT_118 mask_SORT_118 = (SORT_118)-1 >> (sizeof(SORT_118) * 8 - 15); [L59] const SORT_118 msb_SORT_118 = (SORT_118)1 << (15 - 1); [L61] const SORT_151 mask_SORT_151 = (SORT_151)-1 >> (sizeof(SORT_151) * 8 - 7); [L62] const SORT_151 msb_SORT_151 = (SORT_151)1 << (7 - 1); [L64] const SORT_211 mask_SORT_211 = (SORT_211)-1 >> (sizeof(SORT_211) * 8 - 2); [L65] const SORT_211 msb_SORT_211 = (SORT_211)1 << (2 - 1); [L67] const SORT_370 mask_SORT_370 = (SORT_370)-1 >> (sizeof(SORT_370) * 8 - 4); [L68] const SORT_370 msb_SORT_370 = (SORT_370)1 << (4 - 1); [L70] const SORT_373 mask_SORT_373 = (SORT_373)-1 >> (sizeof(SORT_373) * 8 - 6); [L71] const SORT_373 msb_SORT_373 = (SORT_373)1 << (6 - 1); [L73] const SORT_376 mask_SORT_376 = (SORT_376)-1 >> (sizeof(SORT_376) * 8 - 8); [L74] const SORT_376 msb_SORT_376 = (SORT_376)1 << (8 - 1); [L76] const SORT_3 var_6 = 0; [L77] const SORT_9 var_11 = 2; [L78] const SORT_9 var_13 = 0; [L79] const SORT_1 var_19 = 0; [L80] const SORT_1 var_34 = 1; [L81] const SORT_44 var_45 = 0; [L82] const SORT_9 var_61 = 1; [L83] const SORT_9 var_66 = 4; [L84] const SORT_9 var_68 = 5; [L85] const SORT_9 var_72 = 3; [L86] const SORT_99 var_100 = 0; [L87] const SORT_151 var_153 = 5; [L88] const SORT_151 var_157 = 4; [L89] const SORT_151 var_161 = 3; [L90] const SORT_151 var_165 = 2; [L91] const SORT_151 var_169 = 1; [L92] const SORT_151 var_173 = 0; [L93] const SORT_44 var_196 = 2; [L94] const SORT_211 var_213 = 0; [L95] const SORT_3 var_220 = 65535; [L97] SORT_1 input_2; [L98] SORT_3 input_4; [L99] SORT_3 input_5; [L100] SORT_3 input_208; [L101] SORT_3 input_209; [L102] SORT_3 input_210; [L103] SORT_3 input_219; [L104] SORT_3 input_228; [L105] SORT_3 input_229; [L106] SORT_3 input_230; [L107] SORT_3 input_233; [L108] SORT_3 input_251; [L109] SORT_3 input_252; [L110] SORT_3 input_253; [L111] SORT_3 input_256; [L112] SORT_3 input_258; [L113] SORT_211 input_272; [L114] SORT_211 input_273; [L115] SORT_211 input_274; [L117] SORT_3 state_7 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L118] SORT_9 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L119] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_3 state_23 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L121] SORT_3 state_38 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L122] SORT_3 state_40 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L123] SORT_3 state_42 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L124] SORT_44 state_46 = __VERIFIER_nondet_ushort() & mask_SORT_44; [L125] SORT_44 state_48 = __VERIFIER_nondet_ushort() & mask_SORT_44; [L126] SORT_3 state_50 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L127] SORT_3 state_52 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L128] SORT_3 state_54 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L129] SORT_3 state_56 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L131] SORT_3 init_8_arg_1 = var_6; [L132] state_7 = init_8_arg_1 [L133] SORT_9 init_15_arg_1 = var_13; [L134] state_14 = init_15_arg_1 [L135] SORT_1 init_21_arg_1 = var_19; [L136] state_20 = init_21_arg_1 [L137] SORT_3 init_24_arg_1 = var_6; [L138] state_23 = init_24_arg_1 [L139] SORT_3 init_39_arg_1 = var_6; [L140] state_38 = init_39_arg_1 [L141] SORT_3 init_41_arg_1 = var_6; [L142] state_40 = init_41_arg_1 [L143] SORT_3 init_43_arg_1 = var_6; [L144] state_42 = init_43_arg_1 [L145] SORT_44 init_47_arg_1 = var_45; [L146] state_46 = init_47_arg_1 [L147] SORT_44 init_49_arg_1 = var_45; [L148] state_48 = init_49_arg_1 [L149] SORT_3 init_51_arg_1 = var_6; [L150] state_50 = init_51_arg_1 [L151] SORT_3 init_53_arg_1 = var_6; [L152] state_52 = init_53_arg_1 [L153] SORT_3 init_55_arg_1 = var_6; [L154] state_54 = init_55_arg_1 [L155] SORT_3 init_57_arg_1 = var_6; [L156] state_56 = init_57_arg_1 VAL [init_15_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_39_arg_1=0, init_41_arg_1=0, init_43_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_102=511, mask_SORT_104=1023, mask_SORT_107=2047, mask_SORT_112=8191, mask_SORT_115=16383, mask_SORT_118=32767, mask_SORT_151=127, mask_SORT_211=3, mask_SORT_3=65535, mask_SORT_370=15, mask_SORT_373=63, mask_SORT_376=255, mask_SORT_44=4095, mask_SORT_9=7, mask_SORT_98=4294967295, mask_SORT_99=31, msb_SORT_1=1, msb_SORT_102=256, msb_SORT_104=512, msb_SORT_107=1024, msb_SORT_112=4096, msb_SORT_115=8192, msb_SORT_118=16384, msb_SORT_151=64, msb_SORT_211=2, msb_SORT_3=32768, msb_SORT_370=8, msb_SORT_373=32, msb_SORT_376=128, msb_SORT_44=2048, msb_SORT_9=4, msb_SORT_98=65536, msb_SORT_99=16, state_14=0, state_20=0, state_23=0, state_38=0, state_40=0, state_42=0, state_46=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_7=0, var_100=0, var_11=2, var_13=0, var_153=5, var_157=4, var_161=3, var_165=2, var_169=1, var_173=0, var_19=0, var_196=2, var_213=0, var_220=65535, var_34=1, var_45=0, var_6=0, var_61=1, var_66=4, var_68=5, var_72=3] [L159] input_2 = __VERIFIER_nondet_uchar() [L160] input_4 = __VERIFIER_nondet_ushort() [L161] input_5 = __VERIFIER_nondet_ushort() [L162] input_208 = __VERIFIER_nondet_ushort() [L163] input_209 = __VERIFIER_nondet_ushort() [L164] input_210 = __VERIFIER_nondet_ushort() [L165] input_219 = __VERIFIER_nondet_ushort() [L166] input_228 = __VERIFIER_nondet_ushort() [L167] input_229 = __VERIFIER_nondet_ushort() [L168] input_230 = __VERIFIER_nondet_ushort() [L169] input_233 = __VERIFIER_nondet_ushort() [L170] input_251 = __VERIFIER_nondet_ushort() [L171] input_252 = __VERIFIER_nondet_ushort() [L172] input_253 = __VERIFIER_nondet_ushort() [L173] input_256 = __VERIFIER_nondet_ushort() [L174] input_258 = __VERIFIER_nondet_ushort() [L175] input_272 = __VERIFIER_nondet_uchar() [L176] input_273 = __VERIFIER_nondet_uchar() [L177] input_274 = __VERIFIER_nondet_uchar() [L180] SORT_3 var_10_arg_0 = state_7; [L181] SORT_9 var_10 = var_10_arg_0 >> 0; [L182] var_10 = var_10 & mask_SORT_9 [L183] SORT_9 var_12_arg_0 = var_10; [L184] SORT_9 var_12_arg_1 = var_11; [L185] SORT_1 var_12 = var_12_arg_0 == var_12_arg_1; [L186] SORT_9 var_16_arg_0 = state_14; [L187] SORT_1 var_16 = var_16_arg_0 >> 2; [L188] SORT_1 var_17_arg_0 = var_12; [L189] SORT_1 var_17_arg_1 = var_16; [L190] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L191] SORT_1 var_18_arg_0 = var_17; [L192] SORT_1 var_18 = ~var_18_arg_0; [L193] SORT_1 var_22_arg_0 = state_20; [L194] SORT_1 var_22 = ~var_22_arg_0; [L195] SORT_3 var_25_arg_0 = state_23; [L196] SORT_3 var_25_arg_1 = var_6; [L197] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L198] SORT_1 var_26_arg_0 = var_22; [L199] SORT_1 var_26_arg_1 = var_25; [L200] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L201] SORT_3 var_27_arg_0 = state_23; [L202] SORT_3 var_27_arg_1 = var_6; [L203] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L204] SORT_1 var_28_arg_0 = var_27; [L205] SORT_1 var_28 = ~var_28_arg_0; [L206] SORT_1 var_29_arg_0 = var_28; [L207] SORT_1 var_29_arg_1 = state_20; [L208] SORT_1 var_29 = var_29_arg_0 | var_29_arg_1; [L209] SORT_1 var_30_arg_0 = var_26; [L210] SORT_1 var_30_arg_1 = var_29; [L211] SORT_1 var_30 = var_30_arg_0 & var_30_arg_1; [L212] SORT_1 var_31_arg_0 = var_18; [L213] SORT_1 var_31_arg_1 = var_30; [L214] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L215] SORT_1 var_35_arg_0 = var_31; [L216] SORT_1 var_35 = ~var_35_arg_0; [L217] SORT_1 var_36_arg_0 = var_34; [L218] SORT_1 var_36_arg_1 = var_35; [L219] SORT_1 var_36 = var_36_arg_0 & var_36_arg_1; [L220] var_36 = var_36 & mask_SORT_1 [L221] SORT_1 bad_37_arg_0 = var_36; [L222] CALL __VERIFIER_assert(!(bad_37_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 14:19:11,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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_8f78118d-6347-485c-8c37-fa4248db5871/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 022102d12c6d0c5097c2cad24d28685bf677a3959fa1edca410f13c7d5b845fd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:19:12,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:19:12,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:19:12,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:19:12,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:19:12,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:19:12,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:19:12,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:19:12,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:19:12,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:19:12,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:19:12,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:19:12,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:19:12,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:19:12,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:19:12,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:19:12,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:19:12,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:19:12,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:19:12,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:19:12,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:19:12,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:19:12,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:19:12,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:19:12,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:19:12,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:19:12,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:19:12,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:19:12,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:19:12,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:19:12,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:19:12,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:19:12,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:19:12,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:19:12,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:19:12,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:19:12,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:19:12,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:19:12,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:19:12,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:19:12,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:19:12,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 14:19:12,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:19:12,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:19:12,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:19:12,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:19:12,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:19:12,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:19:12,845 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:19:12,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:19:12,845 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:19:12,845 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:19:12,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:19:12,845 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:19:12,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:19:12,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:19:12,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:19:12,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:19:12,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:19:12,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:19:12,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:19:12,847 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:19:12,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:19:12,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:19:12,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:19:12,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:19:12,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:19:12,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:19:12,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:19:12,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:19:12,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:19:12,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:19:12,849 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:19:12,849 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:19:12,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:19:12,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:19:12,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:19:12,850 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_8f78118d-6347-485c-8c37-fa4248db5871/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022102d12c6d0c5097c2cad24d28685bf677a3959fa1edca410f13c7d5b845fd [2022-12-14 14:19:13,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:19:13,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:19:13,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:19:13,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:19:13,079 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:19:13,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-12-14 14:19:15,680 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:19:15,911 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:19:15,911 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-12-14 14:19:15,922 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/data/c5b257286/40facc4c3f4b43ef9d375e60d29e9997/FLAG4840c6d38 [2022-12-14 14:19:15,933 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/data/c5b257286/40facc4c3f4b43ef9d375e60d29e9997 [2022-12-14 14:19:15,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:19:15,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:19:15,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:19:15,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:19:15,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:19:15,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:19:15" (1/1) ... [2022-12-14 14:19:15,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6944f669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:15, skipping insertion in model container [2022-12-14 14:19:15,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:19:15" (1/1) ... [2022-12-14 14:19:15,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:19:16,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:19:16,140 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_8f78118d-6347-485c-8c37-fa4248db5871/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c[1107,1120] [2022-12-14 14:19:16,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:19:16,403 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:19:16,410 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_8f78118d-6347-485c-8c37-fa4248db5871/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p5.c[1107,1120] [2022-12-14 14:19:16,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:19:16,527 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:19:16,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16 WrapperNode [2022-12-14 14:19:16,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:19:16,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:19:16,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:19:16,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:19:16,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,640 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1795 [2022-12-14 14:19:16,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:19:16,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:19:16,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:19:16,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:19:16,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,705 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:19:16,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:19:16,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:19:16,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:19:16,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (1/1) ... [2022-12-14 14:19:16,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:19:16,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:19:16,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:19:16,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:19:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:19:16,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:19:17,103 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:19:17,105 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:19:18,929 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:19:18,934 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:19:18,935 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:19:18,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:19:18 BoogieIcfgContainer [2022-12-14 14:19:18,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:19:18,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:19:18,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:19:18,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:19:18,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:19:15" (1/3) ... [2022-12-14 14:19:18,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da17abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:19:18, skipping insertion in model container [2022-12-14 14:19:18,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:16" (2/3) ... [2022-12-14 14:19:18,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da17abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:19:18, skipping insertion in model container [2022-12-14 14:19:18,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:19:18" (3/3) ... [2022-12-14 14:19:18,942 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p5.c [2022-12-14 14:19:18,956 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:19:18,956 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:19:18,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:19:18,995 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;@5ac2e863, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:19:18,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:19:18,998 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 14:19:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 14:19:19,003 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:19:19,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 14:19:19,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:19:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:19:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 14:19:19,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:19:19,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381033104] [2022-12-14 14:19:19,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:19:19,021 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 14:19:19,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:19:19,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:19:19,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:19:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:19:19,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 14:19:19,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:19:19,392 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 14:19:19,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:19:19,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:19:19,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381033104] [2022-12-14 14:19:19,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381033104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:19:19,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:19:19,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:19:19,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10870078] [2022-12-14 14:19:19,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:19:19,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:19:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:19:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:19:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:19:19,431 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 14:19:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:19:19,718 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 14:19:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:19:19,721 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 14:19:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:19:19,727 INFO L225 Difference]: With dead ends: 20 [2022-12-14 14:19:19,728 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 14:19:19,730 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 14:19:19,733 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:19:19,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:19:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 14:19:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 14:19:19,761 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 14:19:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 14:19:19,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 14:19:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:19:19,763 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 14:19:19,764 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 14:19:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 14:19:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:19:19,764 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:19:19,764 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 14:19:19,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:19:19,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:19:19,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:19:19,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:19:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 14:19:19,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:19:19,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679560381] [2022-12-14 14:19:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:19:19,971 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 14:19:19,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:19:19,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:19:19,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:19:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:19:20,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 14:19:20,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:19:20,767 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 14:19:20,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:19:21,056 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 14:19:21,056 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:19:21,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679560381] [2022-12-14 14:19:21,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679560381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:19:21,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [354590418] [2022-12-14 14:19:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:19:21,057 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:19:21,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:19:21,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:19:21,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 14:19:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:19:22,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 14:19:22,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:19:22,459 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 14:19:22,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:19:22,667 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 14:19:22,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [354590418] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:19:22,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147087446] [2022-12-14 14:19:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:19:22,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:19:22,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:19:22,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:19:22,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:19:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:19:23,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-14 14:19:23,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:19:23,281 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 14:19:23,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:19:23,558 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 14:19:23,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147087446] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:19:23,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:19:23,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 11 [2022-12-14 14:19:23,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277683816] [2022-12-14 14:19:23,559 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:19:23,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 14:19:23,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:19:23,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 14:19:23,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:19:23,561 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:19:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:19:24,500 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 14:19:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 14:19:24,500 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 14:19:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:19:24,501 INFO L225 Difference]: With dead ends: 19 [2022-12-14 14:19:24,501 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 14:19:24,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-12-14 14:19:24,502 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:19:24,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 14:19:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 14:19:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 14:19:24,505 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 14:19:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 14:19:24,505 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-12-14 14:19:24,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:19:24,505 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 14:19:24,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:19:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 14:19:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 14:19:24,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:19:24,506 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 14:19:24,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:19:24,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 14:19:24,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 14:19:25,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:19:25,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:19:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:19:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-12-14 14:19:25,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:19:25,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355133632] [2022-12-14 14:19:25,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:19:25,129 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 14:19:25,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:19:25,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:19:25,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:19:26,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:19:26,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:19:26,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 4595 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-14 14:19:26,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:19:26,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:19:26,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:19:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:19:27,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:19:27,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355133632] [2022-12-14 14:19:27,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355133632] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:19:27,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [318869057] [2022-12-14 14:19:27,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:19:27,772 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:19:27,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:19:27,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:19:27,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 14:19:30,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:19:30,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:19:30,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 4595 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-14 14:19:30,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:19:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:19:30,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:19:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:19:31,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [318869057] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:19:31,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728562796] [2022-12-14 14:19:31,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:19:31,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:19:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:19:31,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:19:31,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:19:33,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:19:33,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:19:33,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 4595 conjuncts, 151 conjunts are in the unsatisfiable core [2022-12-14 14:19:33,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:19:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:19:34,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:19:50,871 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 376 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:25:12,103 WARN L233 SmtUtils]: Spent 5.30m on a formula simplification. DAG size of input: 468 DAG size of output: 461 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:25:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:25:12,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728562796] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:25:12,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:25:12,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 9, 9] total 25 [2022-12-14 14:25:12,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800702171] [2022-12-14 14:25:12,771 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:25:12,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 14:25:12,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:25:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 14:25:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=462, Unknown=1, NotChecked=0, Total=600 [2022-12-14 14:25:12,773 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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 14:25:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:29,301 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-12-14 14:25:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:25:29,302 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 14:25:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:29,303 INFO L225 Difference]: With dead ends: 30 [2022-12-14 14:25:29,303 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 14:25:29,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 348.6s TimeCoverageRelationStatistics Valid=277, Invalid=912, Unknown=1, NotChecked=0, Total=1190 [2022-12-14 14:25:29,304 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 45 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:29,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 24 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 14:25:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 14:25:29,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-12-14 14:25:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:25:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-12-14 14:25:29,311 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2022-12-14 14:25:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:29,311 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-12-14 14:25:29,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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 14:25:29,312 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-12-14 14:25:29,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 14:25:29,312 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:29,312 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-12-14 14:25:29,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 14:25:29,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 14:25:29,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-12-14 14:25:29,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 14:25:29,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-12-14 14:25:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:25:29,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418308403] [2022-12-14 14:25:29,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:25:29,921 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 14:25:29,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:25:29,922 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:25:29,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/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 14:25:31,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 14:25:31,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:25:31,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 6078 conjuncts, 173 conjunts are in the unsatisfiable core [2022-12-14 14:25:31,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:25:37,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:26:42,189 WARN L233 SmtUtils]: Spent 19.44s on a formula simplification. DAG size of input: 1073 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:26:48,959 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 387 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:27:05,111 WARN L233 SmtUtils]: Spent 15.59s on a formula simplification. DAG size of input: 386 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:28:41,320 WARN L233 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 409 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:28:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:28:41,654 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:28:41,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418308403] [2022-12-14 14:28:41,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418308403] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:28:41,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2138215927] [2022-12-14 14:28:41,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:28:41,655 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:28:41,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:28:41,656 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:28:41,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f78118d-6347-485c-8c37-fa4248db5871/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 14:28:45,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 14:28:45,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:28:46,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 6078 conjuncts, 206 conjunts are in the unsatisfiable core [2022-12-14 14:28:46,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:28:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:28:53,168 INFO L328 TraceCheckSpWp]: Computing backward predicates...