./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS --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 8f9abb075f8a5d1203af466994252ff63c7e0d116def0b0783c5a3556a7ec7f7 --- 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-8393723 [2022-11-19 07:26:09,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:26:09,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:26:09,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:26:09,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:26:09,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:26:09,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:26:09,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:26:09,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:26:09,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:26:09,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:26:09,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:26:09,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:26:09,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:26:09,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:26:09,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:26:09,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:26:09,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:26:09,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:26:09,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:26:09,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:26:09,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:26:09,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:26:09,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:26:09,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:26:09,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:26:09,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:26:09,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:26:09,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:26:09,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:26:09,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:26:09,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:26:09,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:26:09,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:26:09,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:26:09,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:26:09,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:26:09,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:26:09,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:26:09,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:26:09,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:26:09,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:26:09,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:26:09,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:26:09,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:26:09,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:26:09,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:26:09,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:26:09,998 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:26:09,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:26:09,999 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:26:09,999 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:26:10,001 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:26:10,002 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:26:10,002 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:26:10,002 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:26:10,003 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:26:10,003 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:26:10,003 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:26:10,004 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:26:10,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:26:10,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:26:10,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:26:10,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:26:10,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:26:10,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:26:10,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:26:10,007 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:26:10,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:26:10,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:26:10,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:26:10,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:26:10,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:26:10,010 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:26:10,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:26:10,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:26:10,011 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:26:10,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:26:10,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:26:10,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:26:10,012 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_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9abb075f8a5d1203af466994252ff63c7e0d116def0b0783c5a3556a7ec7f7 [2022-11-19 07:26:10,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:26:10,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:26:10,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:26:10,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:26:10,318 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:26:10,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-19 07:26:10,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data/11ba232ad/899fa39af4034fb8bc820f48a68e1481/FLAG202c89e82 [2022-11-19 07:26:11,071 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:26:11,073 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-19 07:26:11,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data/11ba232ad/899fa39af4034fb8bc820f48a68e1481/FLAG202c89e82 [2022-11-19 07:26:11,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data/11ba232ad/899fa39af4034fb8bc820f48a68e1481 [2022-11-19 07:26:11,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:26:11,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:26:11,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:26:11,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:26:11,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:26:11,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:26:11" (1/1) ... [2022-11-19 07:26:11,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4194ff6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:11, skipping insertion in model container [2022-11-19 07:26:11,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:26:11" (1/1) ... [2022-11-19 07:26:11,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:26:11,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:26:11,696 WARN L234 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_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c[1107,1120] [2022-11-19 07:26:11,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:26:11,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:26:11,981 WARN L234 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_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c[1107,1120] [2022-11-19 07:26:12,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:26:12,151 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:26:12,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12 WrapperNode [2022-11-19 07:26:12,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:26:12,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:26:12,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:26:12,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:26:12,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,345 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1458 [2022-11-19 07:26:12,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:26:12,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:26:12,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:26:12,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:26:12,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:26:12,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:26:12,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:26:12,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:26:12,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (1/1) ... [2022-11-19 07:26:12,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:26:12,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:26:12,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:26:12,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:26:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:26:12,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:26:12,987 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:26:12,990 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:26:14,592 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:26:17,384 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:26:17,385 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:26:17,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:17 BoogieIcfgContainer [2022-11-19 07:26:17,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:26:17,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:26:17,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:26:17,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:26:17,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:26:11" (1/3) ... [2022-11-19 07:26:17,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f15cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:17, skipping insertion in model container [2022-11-19 07:26:17,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:12" (2/3) ... [2022-11-19 07:26:17,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f15cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:17, skipping insertion in model container [2022-11-19 07:26:17,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:17" (3/3) ... [2022-11-19 07:26:17,399 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-19 07:26:17,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:26:17,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:26:17,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:26:17,517 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;@3e20949, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:26:17,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:26:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:26:17,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:17,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:26:17,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:17,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:17,546 INFO L85 PathProgramCache]: Analyzing trace with hash 23677727, now seen corresponding path program 1 times [2022-11-19 07:26:17,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:26:17,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055797114] [2022-11-19 07:26:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:17,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:26:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:26:17,997 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:26:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:26:18,260 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:26:18,268 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:26:18,269 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:26:18,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:26:18,277 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:26:18,282 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:26:18,320 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 07:26:18,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:26:18 BoogieIcfgContainer [2022-11-19 07:26:18,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:26:18,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:26:18,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:26:18,344 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:26:18,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:17" (3/4) ... [2022-11-19 07:26:18,349 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:26:18,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:26:18,353 INFO L158 Benchmark]: Toolchain (without parser) took 7029.95ms. Allocated memory was 140.5MB in the beginning and 492.8MB in the end (delta: 352.3MB). Free memory was 103.5MB in the beginning and 360.2MB in the end (delta: -256.6MB). Peak memory consumption was 94.3MB. Max. memory is 16.1GB. [2022-11-19 07:26:18,354 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 140.5MB. Free memory was 111.3MB in the beginning and 111.3MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:26:18,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 824.28ms. Allocated memory is still 140.5MB. Free memory was 103.2MB in the beginning and 88.7MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:26:18,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 192.56ms. Allocated memory is still 140.5MB. Free memory was 88.7MB in the beginning and 77.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:26:18,362 INFO L158 Benchmark]: Boogie Preprocessor took 156.35ms. Allocated memory is still 140.5MB. Free memory was 77.0MB in the beginning and 69.7MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:26:18,363 INFO L158 Benchmark]: RCFGBuilder took 4884.65ms. Allocated memory was 140.5MB in the beginning and 492.8MB in the end (delta: 352.3MB). Free memory was 69.7MB in the beginning and 402.1MB in the end (delta: -332.4MB). Peak memory consumption was 140.4MB. Max. memory is 16.1GB. [2022-11-19 07:26:18,365 INFO L158 Benchmark]: TraceAbstraction took 950.46ms. Allocated memory is still 492.8MB. Free memory was 401.1MB in the beginning and 360.2MB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-19 07:26:18,366 INFO L158 Benchmark]: Witness Printer took 7.38ms. Allocated memory is still 492.8MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:26:18,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 140.5MB. Free memory was 111.3MB in the beginning and 111.3MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 824.28ms. Allocated memory is still 140.5MB. Free memory was 103.2MB in the beginning and 88.7MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 192.56ms. Allocated memory is still 140.5MB. Free memory was 88.7MB in the beginning and 77.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 156.35ms. Allocated memory is still 140.5MB. Free memory was 77.0MB in the beginning and 69.7MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 4884.65ms. Allocated memory was 140.5MB in the beginning and 492.8MB in the end (delta: 352.3MB). Free memory was 69.7MB in the beginning and 402.1MB in the end (delta: -332.4MB). Peak memory consumption was 140.4MB. Max. memory is 16.1GB. * TraceAbstraction took 950.46ms. Allocated memory is still 492.8MB. Free memory was 401.1MB in the beginning and 360.2MB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 7.38ms. Allocated memory is still 492.8MB. Free memory is still 360.2MB. 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 bitwiseOr at line 174, overapproximation of bitwiseComplement at line 168, overapproximation of bitwiseAnd at line 151. 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 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 3); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (3 - 1); [L37] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 2); [L38] const SORT_20 msb_SORT_20 = (SORT_20)1 << (2 - 1); [L40] const SORT_85 mask_SORT_85 = (SORT_85)-1 >> (sizeof(SORT_85) * 8 - 4); [L41] const SORT_85 msb_SORT_85 = (SORT_85)1 << (4 - 1); [L43] const SORT_150 mask_SORT_150 = (SORT_150)-1 >> (sizeof(SORT_150) * 8 - 32); [L44] const SORT_150 msb_SORT_150 = (SORT_150)1 << (32 - 1); [L46] const SORT_7 var_8 = 0; [L47] const SORT_7 var_11 = 4; [L48] const SORT_5 var_13 = 0; [L49] const SORT_7 var_17 = 2; [L50] const SORT_20 var_22 = 0; [L51] const SORT_3 var_26 = 0; [L52] const SORT_1 var_35 = 1; [L53] const SORT_1 var_43 = 0; [L54] const SORT_7 var_60 = 1; [L55] const SORT_7 var_66 = 5; [L56] const SORT_7 var_70 = 3; [L57] const SORT_7 var_102 = 7; [L58] const SORT_7 var_107 = 6; [L59] const SORT_150 var_152 = 0; [L60] const SORT_3 var_167 = 2; [L61] const SORT_3 var_184 = 31; [L63] SORT_1 input_2; [L64] SORT_3 input_4; [L65] SORT_5 input_6; [L66] SORT_3 input_173; [L67] SORT_3 input_174; [L68] SORT_3 input_175; [L69] SORT_3 input_183; [L70] SORT_3 input_193; [L71] SORT_3 input_194; [L72] SORT_3 input_195; [L73] SORT_3 input_198; [L74] SORT_3 input_217; [L75] SORT_3 input_218; [L76] SORT_3 input_219; [L77] SORT_3 input_222; [L78] SORT_3 input_224; [L79] SORT_20 input_238; [L80] SORT_20 input_239; [L81] SORT_20 input_240; [L83] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L84] SORT_5 state_14 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L85] SORT_3 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L86] SORT_3 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_3 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L88] SORT_3 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L89] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_3 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_3 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L95] SORT_3 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L97] SORT_7 init_10_arg_1 = var_8; [L98] state_9 = init_10_arg_1 [L99] SORT_5 init_15_arg_1 = var_13; [L100] state_14 = init_15_arg_1 [L101] SORT_3 init_28_arg_1 = var_26; [L102] state_27 = init_28_arg_1 [L103] SORT_3 init_30_arg_1 = var_26; [L104] state_29 = init_30_arg_1 [L105] SORT_3 init_40_arg_1 = var_26; [L106] state_39 = init_40_arg_1 [L107] SORT_3 init_42_arg_1 = var_26; [L108] state_41 = init_42_arg_1 [L109] SORT_1 init_45_arg_1 = var_43; [L110] state_44 = init_45_arg_1 [L111] SORT_3 init_47_arg_1 = var_26; [L112] state_46 = init_47_arg_1 [L113] SORT_3 init_49_arg_1 = var_26; [L114] state_48 = init_49_arg_1 [L115] SORT_3 init_51_arg_1 = var_26; [L116] state_50 = init_51_arg_1 [L117] SORT_3 init_53_arg_1 = var_26; [L118] state_52 = init_53_arg_1 [L119] SORT_3 init_55_arg_1 = var_26; [L120] state_54 = init_55_arg_1 [L121] SORT_3 init_57_arg_1 = var_26; [L122] state_56 = init_57_arg_1 VAL [init_10_arg_1=0, init_15_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_45_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, mask_SORT_1=1, mask_SORT_150=4294967295, mask_SORT_20=3, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_7=7, mask_SORT_85=15, msb_SORT_1=1, msb_SORT_150=2147483648, msb_SORT_20=2, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_7=4, msb_SORT_85=8, state_14=0, state_27=0, state_29=0, state_39=0, state_41=0, state_44=0, state_46=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_9=0, var_102=7, var_107=6, var_11=4, var_13=0, var_152=0, var_167=2, var_17=2, var_184=31, var_22=0, var_26=0, var_35=1, var_43=0, var_60=1, var_66=5, var_70=3, var_8=0] [L125] input_2 = __VERIFIER_nondet_uchar() [L126] input_4 = __VERIFIER_nondet_uchar() [L127] input_6 = __VERIFIER_nondet_ushort() [L128] input_173 = __VERIFIER_nondet_uchar() [L129] input_174 = __VERIFIER_nondet_uchar() [L130] input_175 = __VERIFIER_nondet_uchar() [L131] input_183 = __VERIFIER_nondet_uchar() [L132] input_193 = __VERIFIER_nondet_uchar() [L133] input_194 = __VERIFIER_nondet_uchar() [L134] input_195 = __VERIFIER_nondet_uchar() [L135] input_198 = __VERIFIER_nondet_uchar() [L136] input_217 = __VERIFIER_nondet_uchar() [L137] input_218 = __VERIFIER_nondet_uchar() [L138] input_219 = __VERIFIER_nondet_uchar() [L139] input_222 = __VERIFIER_nondet_uchar() [L140] input_224 = __VERIFIER_nondet_uchar() [L141] input_238 = __VERIFIER_nondet_uchar() [L142] input_239 = __VERIFIER_nondet_uchar() [L143] input_240 = __VERIFIER_nondet_uchar() [L146] SORT_7 var_12_arg_0 = state_9; [L147] SORT_7 var_12_arg_1 = var_11; [L148] SORT_1 var_12 = var_12_arg_0 == var_12_arg_1; [L149] SORT_5 var_16_arg_0 = state_14; [L150] SORT_7 var_16 = var_16_arg_0 >> 9; [L151] var_16 = var_16 & mask_SORT_7 [L152] SORT_7 var_18_arg_0 = var_16; [L153] SORT_7 var_18_arg_1 = var_17; [L154] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L155] SORT_1 var_19_arg_0 = var_12; [L156] SORT_1 var_19_arg_1 = var_18; [L157] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L158] SORT_5 var_21_arg_0 = state_14; [L159] SORT_20 var_21 = var_21_arg_0 >> 7; [L160] var_21 = var_21 & mask_SORT_20 [L161] SORT_20 var_23_arg_0 = var_21; [L162] SORT_20 var_23_arg_1 = var_22; [L163] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L164] SORT_1 var_24_arg_0 = var_19; [L165] SORT_1 var_24_arg_1 = var_23; [L166] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L167] SORT_1 var_25_arg_0 = var_24; [L168] SORT_1 var_25 = ~var_25_arg_0; [L169] SORT_3 var_31_arg_0 = state_27; [L170] SORT_3 var_31_arg_1 = state_29; [L171] SORT_1 var_31 = var_31_arg_0 == var_31_arg_1; [L172] SORT_1 var_32_arg_0 = var_25; [L173] SORT_1 var_32_arg_1 = var_31; [L174] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L175] SORT_1 var_36_arg_0 = var_32; [L176] SORT_1 var_36 = ~var_36_arg_0; [L177] SORT_1 var_37_arg_0 = var_35; [L178] SORT_1 var_37_arg_1 = var_36; [L179] SORT_1 var_37 = var_37_arg_0 & var_37_arg_1; [L180] var_37 = var_37 & mask_SORT_1 [L181] SORT_1 bad_38_arg_0 = var_37; [L182] CALL __VERIFIER_assert(!(bad_38_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:26:18,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS --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 8f9abb075f8a5d1203af466994252ff63c7e0d116def0b0783c5a3556a7ec7f7 --- 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-8393723 [2022-11-19 07:26:20,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:26:20,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:26:20,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:26:20,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:26:20,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:26:20,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:26:20,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:26:20,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:26:20,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:26:20,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:26:20,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:26:20,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:26:20,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:26:20,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:26:20,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:26:20,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:26:20,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:26:20,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:26:20,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:26:20,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:26:20,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:26:20,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:26:20,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:26:20,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:26:20,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:26:20,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:26:20,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:26:20,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:26:20,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:26:20,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:26:20,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:26:20,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:26:20,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:26:20,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:26:20,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:26:20,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:26:20,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:26:20,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:26:20,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:26:20,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:26:20,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:26:20,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:26:20,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:26:20,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:26:20,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:26:20,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:26:20,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:26:20,965 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:26:20,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:26:20,968 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:26:20,969 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:26:20,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:26:20,969 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:26:20,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:26:20,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:26:20,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:26:20,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:26:20,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:26:20,976 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:26:20,976 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:26:20,976 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:26:20,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:26:20,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:26:20,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:26:20,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:26:20,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:26:20,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:26:20,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:26:20,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:26:20,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:26:20,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:26:20,980 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:26:20,981 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:26:20,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:26:20,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:26:20,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:26:20,982 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_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9abb075f8a5d1203af466994252ff63c7e0d116def0b0783c5a3556a7ec7f7 [2022-11-19 07:26:21,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:26:21,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:26:21,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:26:21,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:26:21,448 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:26:21,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-19 07:26:21,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data/963924088/7d7bea37524943e1878f46180f7129d7/FLAG7c22ceb4b [2022-11-19 07:26:22,193 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:26:22,194 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-19 07:26:22,209 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data/963924088/7d7bea37524943e1878f46180f7129d7/FLAG7c22ceb4b [2022-11-19 07:26:22,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/data/963924088/7d7bea37524943e1878f46180f7129d7 [2022-11-19 07:26:22,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:26:22,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:26:22,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:26:22,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:26:22,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:26:22,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:26:22" (1/1) ... [2022-11-19 07:26:22,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342095bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:22, skipping insertion in model container [2022-11-19 07:26:22,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:26:22" (1/1) ... [2022-11-19 07:26:22,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:26:22,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:26:22,748 WARN L234 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_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c[1107,1120] [2022-11-19 07:26:23,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:26:23,081 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:26:23,106 WARN L234 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_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p15.c[1107,1120] [2022-11-19 07:26:23,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:26:23,278 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:26:23,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23 WrapperNode [2022-11-19 07:26:23,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:26:23,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:26:23,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:26:23,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:26:23,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,434 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1045 [2022-11-19 07:26:23,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:26:23,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:26:23,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:26:23,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:26:23,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,509 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:26:23,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:26:23,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:26:23,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:26:23,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (1/1) ... [2022-11-19 07:26:23,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:26:23,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:26:23,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:26:23,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:26:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:26:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:26:24,119 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:26:24,121 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:26:25,551 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:26:25,559 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:26:25,560 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:26:25,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:25 BoogieIcfgContainer [2022-11-19 07:26:25,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:26:25,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:26:25,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:26:25,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:26:25,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:26:22" (1/3) ... [2022-11-19 07:26:25,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2d5031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:25, skipping insertion in model container [2022-11-19 07:26:25,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:26:23" (2/3) ... [2022-11-19 07:26:25,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2d5031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:26:25, skipping insertion in model container [2022-11-19 07:26:25,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:26:25" (3/3) ... [2022-11-19 07:26:25,574 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p15.c [2022-11-19 07:26:25,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:26:25,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:26:25,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:26:25,681 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;@38be2b01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:26:25,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:26:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:25,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:26:25,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:25,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:26:25,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:25,701 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 07:26:25,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:26:25,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568387682] [2022-11-19 07:26:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:25,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:26:25,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:26:25,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:26:25,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:26:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:26,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:26:26,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:26,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:26:26,267 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:26:26,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568387682] [2022-11-19 07:26:26,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568387682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:26:26,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:26:26,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:26:26,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615313990] [2022-11-19 07:26:26,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:26:26,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:26:26,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:26:26,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:26:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:26:26,314 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:26,531 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 07:26:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:26:26,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:26:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:26,557 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:26:26,557 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:26:26,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:26:26,563 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:26,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:26:26,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:26:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 07:26:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 07:26:26,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 07:26:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:26,634 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 07:26:26,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 07:26:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:26:26,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:26,635 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:26:26,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:26:26,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:26:26,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 07:26:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:26:26,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943666824] [2022-11-19 07:26:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:26,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:26:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:26:26,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:26:26,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:26:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:27,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-19 07:26:27,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:27,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:26:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:28,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:26:28,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943666824] [2022-11-19 07:26:28,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943666824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:26:28,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [466929132] [2022-11-19 07:26:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:28,858 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:26:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:26:28,863 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:26:28,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:26:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:30,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-19 07:26:30,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:30,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:26:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:30,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [466929132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:26:30,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993683063] [2022-11-19 07:26:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:26:30,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:26:30,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:26:30,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:26:30,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:26:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:26:31,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-19 07:26:31,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:31,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:26:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:33,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993683063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:26:33,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:26:33,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 7, 6] total 14 [2022-11-19 07:26:33,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632963499] [2022-11-19 07:26:33,365 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:26:33,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:26:33,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:26:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:26:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:26:33,368 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:33,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:33,823 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 07:26:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:26:33,824 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:26:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:33,825 INFO L225 Difference]: With dead ends: 16 [2022-11-19 07:26:33,825 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:26:33,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:26:33,828 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:33,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 25 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-11-19 07:26:33,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:26:33,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 07:26:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 07:26:33,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 07:26:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:33,834 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 07:26:33,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 07:26:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:26:33,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:33,836 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:26:33,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-19 07:26:34,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:26:34,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 07:26:34,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:26:34,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:34,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 07:26:34,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:26:34,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340437235] [2022-11-19 07:26:34,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:26:34,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:26:34,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:26:34,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:26:34,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:26:35,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:26:35,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:26:35,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-19 07:26:35,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:35,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:26:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:36,610 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:26:36,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340437235] [2022-11-19 07:26:36,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340437235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:26:36,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [339673400] [2022-11-19 07:26:36,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:26:36,613 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:26:36,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:26:36,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:26:36,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 07:26:38,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:26:38,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:26:38,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-19 07:26:38,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:38,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:26:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:39,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [339673400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:26:39,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612508656] [2022-11-19 07:26:39,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:26:39,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:26:39,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:26:39,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:26:39,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:26:40,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:26:40,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:26:40,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-19 07:26:40,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:40,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:26:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:40,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612508656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:26:40,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:26:40,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 18 [2022-11-19 07:26:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570169001] [2022-11-19 07:26:40,991 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:26:40,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 07:26:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:26:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 07:26:40,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:26:40,993 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:41,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:26:41,796 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-19 07:26:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:26:41,797 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:26:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:26:41,798 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:26:41,798 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 07:26:41,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:26:41,802 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:26:41,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 32 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 25 Unchecked, 0.4s Time] [2022-11-19 07:26:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 07:26:41,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 07:26:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-19 07:26:41,810 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-11-19 07:26:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:26:41,810 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-19 07:26:41,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:26:41,811 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-19 07:26:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:26:41,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:26:41,812 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-19 07:26:41,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:26:42,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:26:42,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-19 07:26:42,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/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_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:26:42,428 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:26:42,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:26:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-19 07:26:42,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:26:42,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777118418] [2022-11-19 07:26:42,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:26:42,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:26:42,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:26:42,434 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:26:42,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7d5a3b3-e43e-4c03-b1d9-aa2d7e9ac9e8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:26:43,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:26:43,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:26:43,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3535 conjuncts, 347 conjunts are in the unsatisfiable core [2022-11-19 07:26:43,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:27:03,685 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 325 DAG size of output: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:23,007 WARN L233 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 482 DAG size of output: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:27:23,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:31:58,673 WARN L233 SmtUtils]: Spent 17.25s on a formula simplification. DAG size of input: 1003 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:34:23,058 WARN L233 SmtUtils]: Spent 1.63m on a formula simplification. DAG size of input: 903 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)