./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba --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 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a --- 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-b5237d8 [2022-11-22 02:16:59,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:16:59,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:17:00,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:17:00,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:17:00,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:17:00,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:17:00,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:17:00,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:17:00,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:17:00,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:17:00,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:17:00,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:17:00,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:17:00,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:17:00,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:17:00,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:17:00,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:17:00,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:17:00,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:17:00,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:17:00,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:17:00,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:17:00,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:17:00,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:17:00,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:17:00,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:17:00,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:17:00,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:17:00,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:17:00,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:17:00,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:17:00,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:17:00,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:17:00,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:17:00,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:17:00,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:17:00,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:17:00,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:17:00,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:17:00,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:17:00,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:17:00,083 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:17:00,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:17:00,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:17:00,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:17:00,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:17:00,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:17:00,086 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:17:00,086 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:17:00,086 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:17:00,087 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:17:00,087 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:17:00,087 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:17:00,087 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:17:00,088 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:17:00,088 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:17:00,088 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:17:00,089 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:17:00,089 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:17:00,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:17:00,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:17:00,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:17:00,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:17:00,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:17:00,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:17:00,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:17:00,091 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:17:00,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:17:00,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:17:00,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:17:00,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:17:00,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:17:00,093 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:17:00,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:17:00,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:17:00,094 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:17:00,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:17:00,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:17:00,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:17:00,095 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_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a [2022-11-22 02:17:00,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:17:00,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:17:00,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:17:00,401 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:17:00,402 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:17:00,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-22 02:17:03,511 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:17:03,959 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:17:03,960 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-22 02:17:03,981 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/data/5a4a7a6d4/09cf0c37fcba42bca2b2409e7ebc9aed/FLAGd6cea4636 [2022-11-22 02:17:04,007 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/data/5a4a7a6d4/09cf0c37fcba42bca2b2409e7ebc9aed [2022-11-22 02:17:04,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:17:04,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:17:04,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:17:04,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:17:04,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:17:04,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:04,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f38044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04, skipping insertion in model container [2022-11-22 02:17:04,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:04,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:17:04,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:17:04,321 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-22 02:17:04,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:17:04,700 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:17:04,712 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-22 02:17:04,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:17:04,951 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:17:04,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04 WrapperNode [2022-11-22 02:17:04,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:17:04,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:17:04,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:17:04,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:17:04,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,197 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1884 [2022-11-22 02:17:05,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:17:05,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:17:05,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:17:05,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:17:05,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,274 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:17:05,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:17:05,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:17:05,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:17:05,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (1/1) ... [2022-11-22 02:17:05,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:17:05,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:17:05,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:17:05,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:17:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:17:05,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:17:05,966 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:17:05,968 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:18:35,839 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:18:35,895 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:18:35,896 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:18:35,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:35 BoogieIcfgContainer [2022-11-22 02:18:35,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:18:35,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:18:35,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:18:35,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:18:35,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:17:04" (1/3) ... [2022-11-22 02:18:35,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd4a60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:35, skipping insertion in model container [2022-11-22 02:18:35,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:04" (2/3) ... [2022-11-22 02:18:35,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd4a60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:35, skipping insertion in model container [2022-11-22 02:18:35,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:35" (3/3) ... [2022-11-22 02:18:35,914 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-22 02:18:35,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:18:35,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:18:35,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:18:36,000 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;@5728b00b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:18:36,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:18:36,006 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) [2022-11-22 02:18:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:18:36,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:36,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:18:36,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:36,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:36,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-22 02:18:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:36,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014927180] [2022-11-22 02:18:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:18:36,220 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:18:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:18:36,398 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:18:36,400 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:18:36,402 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:18:36,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:18:36,412 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 02:18:36,415 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:18:36,439 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:18:36,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:18:36 BoogieIcfgContainer [2022-11-22 02:18:36,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:18:36,448 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:18:36,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:18:36,448 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:18:36,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:35" (3/4) ... [2022-11-22 02:18:36,452 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 02:18:36,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:18:36,454 INFO L158 Benchmark]: Toolchain (without parser) took 92438.75ms. Allocated memory was 153.1MB in the beginning and 775.9MB in the end (delta: 622.9MB). Free memory was 118.1MB in the beginning and 508.6MB in the end (delta: -390.5MB). Peak memory consumption was 235.5MB. Max. memory is 16.1GB. [2022-11-22 02:18:36,454 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 153.1MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:18:36,455 INFO L158 Benchmark]: CACSL2BoogieTranslator took 932.15ms. Allocated memory is still 153.1MB. Free memory was 117.6MB in the beginning and 60.1MB in the end (delta: 57.5MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-22 02:18:36,455 INFO L158 Benchmark]: Boogie Procedure Inliner took 244.55ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 60.1MB in the beginning and 145.7MB in the end (delta: -85.5MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2022-11-22 02:18:36,456 INFO L158 Benchmark]: Boogie Preprocessor took 100.09ms. Allocated memory is still 195.0MB. Free memory was 145.7MB in the beginning and 137.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 02:18:36,457 INFO L158 Benchmark]: RCFGBuilder took 90599.88ms. Allocated memory was 195.0MB in the beginning and 775.9MB in the end (delta: 580.9MB). Free memory was 137.3MB in the beginning and 545.3MB in the end (delta: -408.0MB). Peak memory consumption was 466.5MB. Max. memory is 16.1GB. [2022-11-22 02:18:36,457 INFO L158 Benchmark]: TraceAbstraction took 543.95ms. Allocated memory is still 775.9MB. Free memory was 545.3MB in the beginning and 508.6MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-22 02:18:36,458 INFO L158 Benchmark]: Witness Printer took 4.67ms. Allocated memory is still 775.9MB. Free memory is still 508.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:18:36,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 153.1MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 932.15ms. Allocated memory is still 153.1MB. Free memory was 117.6MB in the beginning and 60.1MB in the end (delta: 57.5MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 244.55ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 60.1MB in the beginning and 145.7MB in the end (delta: -85.5MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.09ms. Allocated memory is still 195.0MB. Free memory was 145.7MB in the beginning and 137.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 90599.88ms. Allocated memory was 195.0MB in the beginning and 775.9MB in the end (delta: 580.9MB). Free memory was 137.3MB in the beginning and 545.3MB in the end (delta: -408.0MB). Peak memory consumption was 466.5MB. Max. memory is 16.1GB. * TraceAbstraction took 543.95ms. Allocated memory is still 775.9MB. Free memory was 545.3MB in the beginning and 508.6MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 4.67ms. Allocated memory is still 775.9MB. Free memory is still 508.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 147, overapproximation of bitwiseAnd at line 136. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L31] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L32] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L34] const SORT_22 mask_SORT_22 = (SORT_22)-1 >> (sizeof(SORT_22) * 8 - 32); [L35] const SORT_22 msb_SORT_22 = (SORT_22)1 << (32 - 1); [L37] const SORT_7 var_8 = 0; [L38] const SORT_7 var_11 = 16; [L39] const SORT_1 var_15 = 1; [L40] const SORT_1 var_19 = 0; [L41] const SORT_22 var_23 = 0; [L42] const SORT_22 var_24 = 15; [L43] const SORT_22 var_74 = 14; [L44] const SORT_22 var_92 = 13; [L45] const SORT_22 var_110 = 12; [L46] const SORT_22 var_128 = 11; [L47] const SORT_22 var_146 = 10; [L48] const SORT_22 var_164 = 9; [L49] const SORT_22 var_182 = 8; [L50] const SORT_22 var_200 = 7; [L51] const SORT_22 var_218 = 6; [L52] const SORT_22 var_236 = 5; [L53] const SORT_22 var_254 = 4; [L54] const SORT_22 var_272 = 3; [L55] const SORT_22 var_290 = 2; [L56] const SORT_22 var_308 = 1; [L57] const SORT_4 var_347 = 0; [L58] const SORT_22 var_351 = 16; [L60] SORT_1 input_2; [L61] SORT_1 input_3; [L62] SORT_4 input_5; [L63] SORT_1 input_6; [L64] SORT_1 input_386; [L65] SORT_4 input_388; [L66] SORT_1 input_404; [L67] SORT_4 input_408; [L69] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L70] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_66 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_345 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_4 state_348 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L90] SORT_7 init_10_arg_1 = var_8; [L91] state_9 = init_10_arg_1 [L92] SORT_1 init_21_arg_1 = var_19; [L93] state_20 = init_21_arg_1 [L94] SORT_1 init_26_arg_1 = var_19; [L95] state_25 = init_26_arg_1 [L96] SORT_1 init_28_arg_1 = var_19; [L97] state_27 = init_28_arg_1 [L98] SORT_1 init_31_arg_1 = var_19; [L99] state_30 = init_31_arg_1 [L100] SORT_1 init_33_arg_1 = var_19; [L101] state_32 = init_33_arg_1 [L102] SORT_1 init_37_arg_1 = var_19; [L103] state_36 = init_37_arg_1 [L104] SORT_1 init_39_arg_1 = var_19; [L105] state_38 = init_39_arg_1 [L106] SORT_1 init_42_arg_1 = var_19; [L107] state_41 = init_42_arg_1 [L108] SORT_1 init_44_arg_1 = var_19; [L109] state_43 = init_44_arg_1 [L110] SORT_1 init_49_arg_1 = var_19; [L111] state_48 = init_49_arg_1 [L112] SORT_1 init_51_arg_1 = var_19; [L113] state_50 = init_51_arg_1 [L114] SORT_1 init_54_arg_1 = var_19; [L115] state_53 = init_54_arg_1 [L116] SORT_1 init_56_arg_1 = var_19; [L117] state_55 = init_56_arg_1 [L118] SORT_1 init_60_arg_1 = var_19; [L119] state_59 = init_60_arg_1 [L120] SORT_1 init_62_arg_1 = var_19; [L121] state_61 = init_62_arg_1 [L122] SORT_1 init_65_arg_1 = var_19; [L123] state_64 = init_65_arg_1 [L124] SORT_1 init_67_arg_1 = var_19; [L125] state_66 = init_67_arg_1 [L126] SORT_1 init_346_arg_1 = var_19; [L127] state_345 = init_346_arg_1 [L128] SORT_4 init_349_arg_1 = var_347; [L129] state_348 = init_349_arg_1 VAL [init_10_arg_1=0, init_21_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_346_arg_1=0, init_349_arg_1=0, init_37_arg_1=0, init_39_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_65_arg_1=0, init_67_arg_1=0, mask_SORT_1=1, mask_SORT_22=4294967295, mask_SORT_4=15, mask_SORT_7=31, msb_SORT_1=1, msb_SORT_22=2147483648, msb_SORT_4=8, msb_SORT_7=16, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_345=0, state_348=0, state_36=0, state_38=0, state_41=0, state_43=0, state_48=0, state_50=0, state_53=0, state_55=0, state_59=0, state_61=0, state_64=0, state_66=0, state_9=0, var_11=16, var_110=12, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_23=0, var_236=5, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L132] input_2 = __VERIFIER_nondet_uchar() [L133] input_3 = __VERIFIER_nondet_uchar() [L134] input_5 = __VERIFIER_nondet_uchar() [L135] input_6 = __VERIFIER_nondet_uchar() [L136] input_6 = input_6 & mask_SORT_1 [L137] input_386 = __VERIFIER_nondet_uchar() [L138] input_388 = __VERIFIER_nondet_uchar() [L139] input_404 = __VERIFIER_nondet_uchar() [L140] input_408 = __VERIFIER_nondet_uchar() [L143] SORT_7 var_12_arg_0 = state_9; [L144] SORT_7 var_12_arg_1 = var_11; [L145] SORT_1 var_12 = var_12_arg_0 <= var_12_arg_1; [L146] SORT_1 var_16_arg_0 = var_12; [L147] SORT_1 var_16 = ~var_16_arg_0; [L148] SORT_1 var_17_arg_0 = var_15; [L149] SORT_1 var_17_arg_1 = var_16; [L150] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L151] var_17 = var_17 & mask_SORT_1 [L152] SORT_1 bad_18_arg_0 = var_17; [L153] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-22 02:18:36,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba --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 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a --- 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-b5237d8 [2022-11-22 02:18:38,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:18:38,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:18:38,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:18:38,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:18:38,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:18:38,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:18:38,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:18:38,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:18:38,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:18:38,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:18:38,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:18:38,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:18:38,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:18:38,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:18:38,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:18:38,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:18:38,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:18:38,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:18:38,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:18:38,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:18:38,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:18:38,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:18:38,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:18:38,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:18:38,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:18:38,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:18:38,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:18:38,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:18:38,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:18:38,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:18:38,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:18:38,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:18:38,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:18:38,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:18:38,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:18:38,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:18:38,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:18:38,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:18:38,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:18:38,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:18:38,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-22 02:18:38,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:18:38,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:18:38,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:18:38,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:18:38,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:18:38,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:18:38,846 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:18:38,846 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:18:38,846 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:18:38,847 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:18:38,847 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:18:38,847 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:18:38,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:18:38,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:18:38,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:18:38,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:18:38,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:18:38,850 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:18:38,850 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 02:18:38,850 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 02:18:38,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:18:38,851 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:18:38,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:18:38,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:18:38,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 02:18:38,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:18:38,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:18:38,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:18:38,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:18:38,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:18:38,853 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 02:18:38,853 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 02:18:38,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:18:38,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:18:38,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 02:18:38,854 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_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a [2022-11-22 02:18:39,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:18:39,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:18:39,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:18:39,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:18:39,285 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:18:39,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-22 02:18:42,490 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:18:42,857 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:18:42,862 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-22 02:18:42,883 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/data/b1a9b180c/86091b6c720d444d881ce017ed1e513d/FLAGa7306ab85 [2022-11-22 02:18:42,900 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/data/b1a9b180c/86091b6c720d444d881ce017ed1e513d [2022-11-22 02:18:42,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:18:42,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:18:42,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:42,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:18:42,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:18:42,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:42" (1/1) ... [2022-11-22 02:18:42,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f33d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:42, skipping insertion in model container [2022-11-22 02:18:42,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:42" (1/1) ... [2022-11-22 02:18:42,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:18:42,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:18:43,196 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-22 02:18:43,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:43,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:18:43,624 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-22 02:18:43,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:43,774 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:18:43,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43 WrapperNode [2022-11-22 02:18:43,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:43,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:43,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:18:43,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:18:43,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:43,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:43,914 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1884 [2022-11-22 02:18:43,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:43,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:18:43,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:18:43,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:18:43,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:43,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:43,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:43,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:44,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:44,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:44,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:44,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:44,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:18:44,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:18:44,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:18:44,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:18:44,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (1/1) ... [2022-11-22 02:18:44,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:18:44,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:44,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:18:44,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:18:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:18:44,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:18:44,836 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:18:44,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:18:47,913 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:18:47,926 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:18:47,926 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:18:47,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:47 BoogieIcfgContainer [2022-11-22 02:18:47,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:18:47,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:18:47,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:18:47,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:18:47,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:18:42" (1/3) ... [2022-11-22 02:18:47,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6903a6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:47, skipping insertion in model container [2022-11-22 02:18:47,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:43" (2/3) ... [2022-11-22 02:18:47,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6903a6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:47, skipping insertion in model container [2022-11-22 02:18:47,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:47" (3/3) ... [2022-11-22 02:18:47,950 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-22 02:18:47,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:18:47,972 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:18:48,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:18:48,043 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;@1422f841, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:18:48,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:18:48,048 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) [2022-11-22 02:18:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:18:48,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:48,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:18:48,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:48,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-22 02:18:48,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:18:48,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235517307] [2022-11-22 02:18:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:48,076 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 [2022-11-22 02:18:48,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:18:48,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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) [2022-11-22 02:18:48,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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 [2022-11-22 02:18:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:48,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 02:18:48,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:48,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:18:48,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:18:48,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235517307] [2022-11-22 02:18:48,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235517307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:48,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:48,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:18:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109655747] [2022-11-22 02:18:48,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:18:48,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:18:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:18:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:18:48,782 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) [2022-11-22 02:18:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:49,085 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-22 02:18:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:18:49,088 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 [2022-11-22 02:18:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:49,095 INFO L225 Difference]: With dead ends: 20 [2022-11-22 02:18:49,096 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 02:18:49,099 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 [2022-11-22 02:18:49,103 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:49,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:18:49,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 02:18:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-22 02:18:49,136 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) [2022-11-22 02:18:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 02:18:49,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 02:18:49,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:49,139 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 02:18:49,139 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) [2022-11-22 02:18:49,139 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 02:18:49,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:18:49,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:49,140 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:49,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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 [2022-11-22 02:18:49,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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 [2022-11-22 02:18:49,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:49,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-22 02:18:49,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:18:49,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823725006] [2022-11-22 02:18:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:49,360 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 [2022-11-22 02:18:49,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:18:49,361 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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) [2022-11-22 02:18:49,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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 [2022-11-22 02:18:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:50,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-22 02:18:50,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:50,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:50,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:18:50,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823725006] [2022-11-22 02:18:50,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823725006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:50,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [401462674] [2022-11-22 02:18:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:50,935 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:18:50,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:18:50,938 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:18:50,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-22 02:18:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:52,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-22 02:18:52,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:52,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:53,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [401462674] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:53,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360682557] [2022-11-22 02:18:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:53,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:53,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:53,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:18:53,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:18:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:53,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-22 02:18:54,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:54,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:54,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360682557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:54,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:18:54,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-22 02:18:54,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761674166] [2022-11-22 02:18:54,588 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:18:54,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:18:54,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:18:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:18:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:18:54,591 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:55,161 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-22 02:18:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:18:55,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 02:18:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:55,163 INFO L225 Difference]: With dead ends: 16 [2022-11-22 02:18:55,163 INFO L226 Difference]: Without dead ends: 14 [2022-11-22 02:18:55,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:18:55,164 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:55,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:18:55,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-22 02:18:55,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-22 02:18:55,168 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) [2022-11-22 02:18:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-22 02:18:55,169 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-22 02:18:55,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:55,169 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-22 02:18:55,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-22 02:18:55,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:18:55,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:55,170 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 02:18:55,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:55,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:55,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:55,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:55,771 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-22 02:18:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:18:55,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577372050] [2022-11-22 02:18:55,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:18:55,778 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 [2022-11-22 02:18:55,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:18:55,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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) [2022-11-22 02:18:55,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a24a5a7-99cc-47b7-8b8e-7c927b2f5984/bin/utaipan-g80aRyZoba/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 [2022-11-22 02:18:57,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:18:57,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:18:57,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 351 conjunts are in the unsatisfiable core [2022-11-22 02:18:57,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:19:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:01,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:21:15,090 WARN L233 SmtUtils]: Spent 2.16m on a formula simplification. DAG size of input: 524 DAG size of output: 493 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)