./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7b74b495a5e861e829e40f2b5977babf1bbd6b873265ff46d461edc75bc3a847 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:09:51,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:09:51,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:09:51,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:09:51,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:09:51,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:09:51,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:09:51,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:09:51,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:09:51,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:09:51,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:09:51,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:09:51,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:09:51,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:09:51,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:09:51,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:09:51,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:09:51,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:09:51,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:09:51,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:09:51,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:09:51,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:09:51,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:09:52,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:09:52,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:09:52,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:09:52,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:09:52,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:09:52,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:09:52,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:09:52,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:09:52,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:09:52,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:09:52,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:09:52,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:09:52,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:09:52,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:09:52,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:09:52,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:09:52,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:09:52,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:09:52,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 11:09:52,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:09:52,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:09:52,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:09:52,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:09:52,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:09:52,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:09:52,027 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:09:52,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:09:52,027 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:09:52,027 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:09:52,027 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:09:52,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:09:52,028 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:09:52,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:09:52,028 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:09:52,028 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:09:52,028 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:09:52,028 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:09:52,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:09:52,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:09:52,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:09:52,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:09:52,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:09:52,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:09:52,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:09:52,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:09:52,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:09:52,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:09:52,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:09:52,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:09:52,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:09:52,030 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:09:52,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:09:52,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:09:52,031 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:09:52,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:09:52,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:09:52,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:09:52,031 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_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b74b495a5e861e829e40f2b5977babf1bbd6b873265ff46d461edc75bc3a847 [2022-12-14 11:09:52,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:09:52,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:09:52,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:09:52,246 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:09:52,247 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:09:52,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2022-12-14 11:09:54,848 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:09:55,051 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:09:55,052 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2022-12-14 11:09:55,063 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/data/8da8e3785/6d7ba6246e4e4398af9769de08da8d1e/FLAG4b63f7ae9 [2022-12-14 11:09:55,076 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/data/8da8e3785/6d7ba6246e4e4398af9769de08da8d1e [2022-12-14 11:09:55,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:09:55,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:09:55,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:09:55,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:09:55,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:09:55,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ad36ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55, skipping insertion in model container [2022-12-14 11:09:55,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:09:55,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:09:55,280 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_97ef19ed-d0ef-426a-bfc9-8fab2f329116/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1107,1120] [2022-12-14 11:09:55,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:09:55,452 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:09:55,460 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_97ef19ed-d0ef-426a-bfc9-8fab2f329116/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1107,1120] [2022-12-14 11:09:55,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:09:55,539 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:09:55,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55 WrapperNode [2022-12-14 11:09:55,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:09:55,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:09:55,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:09:55,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:09:55,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,610 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1274 [2022-12-14 11:09:55,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:09:55,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:09:55,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:09:55,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:09:55,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,648 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:09:55,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:09:55,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:09:55,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:09:55,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (1/1) ... [2022-12-14 11:09:55,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:09:55,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:09:55,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:09:55,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:09:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:09:55,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:09:55,929 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:09:55,930 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:10:03,214 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:10:03,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:10:03,231 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:10:03,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:10:03 BoogieIcfgContainer [2022-12-14 11:10:03,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:10:03,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:10:03,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:10:03,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:10:03,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:09:55" (1/3) ... [2022-12-14 11:10:03,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@935c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:10:03, skipping insertion in model container [2022-12-14 11:10:03,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:09:55" (2/3) ... [2022-12-14 11:10:03,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@935c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:10:03, skipping insertion in model container [2022-12-14 11:10:03,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:10:03" (3/3) ... [2022-12-14 11:10:03,238 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_DAIO.c [2022-12-14 11:10:03,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:10:03,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:10:03,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:10:03,289 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;@53bf86a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:10:03,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:10:03,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:10:03,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 11:10:03,296 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:10:03,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 11:10:03,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:10:03,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:10:03,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 11:10:03,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:10:03,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459975682] [2022-12-14 11:10:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:10:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:10:03,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:10:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:10:03,598 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:10:03,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:10:03,600 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 11:10:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:10:03,605 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 11:10:03,608 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:10:03,632 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 11:10:03,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:10:03 BoogieIcfgContainer [2022-12-14 11:10:03,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:10:03,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:10:03,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:10:03,646 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:10:03,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:10:03" (3/4) ... [2022-12-14 11:10:03,649 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:10:03,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:10:03,651 INFO L158 Benchmark]: Toolchain (without parser) took 8571.64ms. Allocated memory was 125.8MB in the beginning and 492.8MB in the end (delta: 367.0MB). Free memory was 73.5MB in the beginning and 221.5MB in the end (delta: -148.0MB). Peak memory consumption was 219.6MB. Max. memory is 16.1GB. [2022-12-14 11:10:03,651 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 125.8MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:10:03,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.18ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 73.5MB in the beginning and 113.5MB in the end (delta: -40.0MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2022-12-14 11:10:03,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.90ms. Allocated memory is still 167.8MB. Free memory was 113.5MB in the beginning and 103.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 11:10:03,653 INFO L158 Benchmark]: Boogie Preprocessor took 48.29ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 97.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 11:10:03,654 INFO L158 Benchmark]: RCFGBuilder took 7573.53ms. Allocated memory was 167.8MB in the beginning and 492.8MB in the end (delta: 325.1MB). Free memory was 97.8MB in the beginning and 260.3MB in the end (delta: -162.5MB). Peak memory consumption was 277.1MB. Max. memory is 16.1GB. [2022-12-14 11:10:03,654 INFO L158 Benchmark]: TraceAbstraction took 410.76ms. Allocated memory is still 492.8MB. Free memory was 260.3MB in the beginning and 221.5MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 11:10:03,655 INFO L158 Benchmark]: Witness Printer took 3.99ms. Allocated memory is still 492.8MB. Free memory is still 221.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:10:03,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 125.8MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.18ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 73.5MB in the beginning and 113.5MB in the end (delta: -40.0MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.90ms. Allocated memory is still 167.8MB. Free memory was 113.5MB in the beginning and 103.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.29ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 97.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 7573.53ms. Allocated memory was 167.8MB in the beginning and 492.8MB in the end (delta: 325.1MB). Free memory was 97.8MB in the beginning and 260.3MB in the end (delta: -162.5MB). Peak memory consumption was 277.1MB. Max. memory is 16.1GB. * TraceAbstraction took 410.76ms. Allocated memory is still 492.8MB. Free memory was 260.3MB in the beginning and 221.5MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 3.99ms. Allocated memory is still 492.8MB. Free memory is still 221.5MB. 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 296, overapproximation of bitwiseOr at line 294, overapproximation of bitwiseAnd at line 191. 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_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 4); [L29] const SORT_10 msb_SORT_10 = (SORT_10)1 << (4 - 1); [L31] const SORT_16 mask_SORT_16 = (SORT_16)-1 >> (sizeof(SORT_16) * 8 - 32); [L32] const SORT_16 msb_SORT_16 = (SORT_16)1 << (32 - 1); [L34] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 7); [L35] const SORT_32 msb_SORT_32 = (SORT_32)1 << (7 - 1); [L37] const SORT_40 mask_SORT_40 = (SORT_40)-1 >> (sizeof(SORT_40) * 8 - 9); [L38] const SORT_40 msb_SORT_40 = (SORT_40)1 << (9 - 1); [L40] const SORT_60 mask_SORT_60 = (SORT_60)-1 >> (sizeof(SORT_60) * 8 - 20); [L41] const SORT_60 msb_SORT_60 = (SORT_60)1 << (20 - 1); [L43] const SORT_357 mask_SORT_357 = (SORT_357)-1 >> (sizeof(SORT_357) * 8 - 2); [L44] const SORT_357 msb_SORT_357 = (SORT_357)1 << (2 - 1); [L46] const SORT_359 mask_SORT_359 = (SORT_359)-1 >> (sizeof(SORT_359) * 8 - 3); [L47] const SORT_359 msb_SORT_359 = (SORT_359)1 << (3 - 1); [L49] const SORT_1 var_13 = 0; [L50] const SORT_16 var_18 = 1; [L51] const SORT_16 var_23 = 0; [L52] const SORT_1 var_28 = 1; [L53] const SORT_32 var_33 = 0; [L54] const SORT_40 var_41 = 0; [L55] const SORT_10 var_48 = 0; [L56] const SORT_16 var_67 = 31; [L57] const SORT_16 var_71 = 32; [L58] const SORT_10 var_74 = 3; [L59] const SORT_16 var_90 = 2; [L60] const SORT_10 var_96 = 5; [L61] const SORT_10 var_117 = 7; [L62] const SORT_10 var_136 = 9; [L63] const SORT_32 var_233 = 4; [L64] const SORT_10 var_235 = 2; [L65] const SORT_32 var_254 = 1; [L66] const SORT_16 var_256 = 191; [L67] const SORT_10 var_259 = 6; [L68] const SORT_10 var_282 = 4; [L69] const SORT_10 var_307 = 8; [L70] const SORT_40 var_315 = 1; [L71] const SORT_10 var_321 = 10; [L72] const SORT_10 var_329 = 1; [L74] SORT_1 input_2; [L75] SORT_1 input_3; [L76] SORT_1 input_4; [L77] SORT_1 input_5; [L78] SORT_1 input_6; [L79] SORT_1 input_7; [L80] SORT_1 input_8; [L81] SORT_1 input_9; [L82] SORT_10 input_11; [L83] SORT_10 input_12; [L84] SORT_1 input_38; [L85] SORT_1 input_44; [L86] SORT_1 input_46; [L87] SORT_1 input_52; [L88] SORT_1 input_54; [L89] SORT_1 input_56; [L90] SORT_1 input_58; [L91] SORT_60 input_61; [L92] SORT_1 input_63; [L93] SORT_1 input_64; [L94] SORT_1 input_65; [L95] SORT_1 input_77; [L96] SORT_1 input_82; [L97] SORT_1 input_86; [L98] SORT_1 input_87; [L99] SORT_1 input_88; [L100] SORT_1 input_99; [L101] SORT_1 input_104; [L102] SORT_1 input_108; [L103] SORT_1 input_109; [L104] SORT_1 input_110; [L105] SORT_1 input_120; [L106] SORT_1 input_125; [L107] SORT_1 input_127; [L108] SORT_1 input_128; [L109] SORT_1 input_129; [L110] SORT_1 input_139; [L111] SORT_1 input_144; [L112] SORT_1 input_151; [L113] SORT_1 input_155; [L114] SORT_1 input_156; [L115] SORT_1 input_157; [L116] SORT_1 input_164; [L117] SORT_1 input_169; [L118] SORT_1 input_173; [L119] SORT_1 input_174; [L120] SORT_1 input_175; [L121] SORT_1 input_182; [L122] SORT_1 input_187; [L123] SORT_1 input_191; [L124] SORT_1 input_192; [L125] SORT_1 input_193; [L126] SORT_1 input_200; [L127] SORT_1 input_205; [L128] SORT_1 input_207; [L129] SORT_1 input_208; [L130] SORT_1 input_209; [L131] SORT_1 input_216; [L132] SORT_1 input_221; [L133] SORT_1 input_228; [L134] SORT_32 input_232; [L135] SORT_32 input_238; [L136] SORT_32 input_242; [L137] SORT_32 input_249; [L138] SORT_32 input_253; [L139] SORT_32 input_262; [L140] SORT_32 input_264; [L141] SORT_32 input_271; [L142] SORT_32 input_278; [L143] SORT_32 input_285; [L144] SORT_32 input_292; [L145] SORT_32 input_296; [L146] SORT_32 input_303; [L147] SORT_32 input_311; [L148] SORT_40 input_324; [L149] SORT_10 input_328; [L150] SORT_10 input_334; [L151] SORT_10 input_340; [L152] SORT_10 input_344; [L153] SORT_10 input_346; [L154] SORT_10 input_350; [L155] SORT_10 input_363; [L156] SORT_10 input_367; [L157] SORT_10 input_369; [L158] SORT_10 input_373; [L159] SORT_10 input_377; [L160] SORT_10 input_381; [L161] SORT_10 input_385; [L162] SORT_10 input_389; [L163] SORT_10 input_406; [L165] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L166] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L167] SORT_32 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L168] SORT_32 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L169] SORT_40 state_42 = __VERIFIER_nondet_ushort() & mask_SORT_40; [L170] SORT_10 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L172] SORT_1 init_15_arg_1 = var_13; [L173] state_14 = init_15_arg_1 [L174] SORT_1 init_21_arg_1 = var_13; [L175] state_20 = init_21_arg_1 [L176] SORT_32 init_35_arg_1 = var_33; [L177] state_34 = init_35_arg_1 [L178] SORT_32 init_37_arg_1 = var_33; [L179] state_36 = init_37_arg_1 [L180] SORT_40 init_43_arg_1 = var_41; [L181] state_42 = init_43_arg_1 [L182] SORT_10 init_50_arg_1 = var_48; [L183] state_49 = init_50_arg_1 VAL [init_15_arg_1=0, init_21_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_43_arg_1=0, init_50_arg_1=0, mask_SORT_1=1, mask_SORT_10=15, mask_SORT_16=4294967295, mask_SORT_32=127, mask_SORT_357=3, mask_SORT_359=7, mask_SORT_40=511, mask_SORT_60=4294967295, msb_SORT_1=1, msb_SORT_10=8, msb_SORT_16=2147483648, msb_SORT_32=64, msb_SORT_357=2, msb_SORT_359=4, msb_SORT_40=256, msb_SORT_60=524288, state_14=0, state_20=0, state_34=0, state_36=0, state_42=0, state_49=0, var_117=7, var_13=0, var_136=9, var_18=1, var_23=0, var_233=4, var_235=2, var_254=1, var_256=191, var_259=6, var_28=1, var_282=4, var_307=8, var_315=1, var_321=10, var_329=1, var_33=0, var_41=0, var_48=0, var_67=31, var_71=32, var_74=3, var_90=2, var_96=5] [L186] input_2 = __VERIFIER_nondet_uchar() [L187] input_3 = __VERIFIER_nondet_uchar() [L188] input_4 = __VERIFIER_nondet_uchar() [L189] input_5 = __VERIFIER_nondet_uchar() [L190] input_6 = __VERIFIER_nondet_uchar() [L191] input_6 = input_6 & mask_SORT_1 [L192] input_7 = __VERIFIER_nondet_uchar() [L193] input_8 = __VERIFIER_nondet_uchar() [L194] input_9 = __VERIFIER_nondet_uchar() [L195] input_9 = input_9 & mask_SORT_1 [L196] input_11 = __VERIFIER_nondet_uchar() [L197] input_12 = __VERIFIER_nondet_uchar() [L198] input_38 = __VERIFIER_nondet_uchar() [L199] input_44 = __VERIFIER_nondet_uchar() [L200] input_46 = __VERIFIER_nondet_uchar() [L201] input_52 = __VERIFIER_nondet_uchar() [L202] input_54 = __VERIFIER_nondet_uchar() [L203] input_56 = __VERIFIER_nondet_uchar() [L204] input_58 = __VERIFIER_nondet_uchar() [L205] input_61 = __VERIFIER_nondet_uint() [L206] input_63 = __VERIFIER_nondet_uchar() [L207] input_64 = __VERIFIER_nondet_uchar() [L208] input_65 = __VERIFIER_nondet_uchar() [L209] input_77 = __VERIFIER_nondet_uchar() [L210] input_82 = __VERIFIER_nondet_uchar() [L211] input_86 = __VERIFIER_nondet_uchar() [L212] input_87 = __VERIFIER_nondet_uchar() [L213] input_88 = __VERIFIER_nondet_uchar() [L214] input_99 = __VERIFIER_nondet_uchar() [L215] input_104 = __VERIFIER_nondet_uchar() [L216] input_108 = __VERIFIER_nondet_uchar() [L217] input_109 = __VERIFIER_nondet_uchar() [L218] input_110 = __VERIFIER_nondet_uchar() [L219] input_120 = __VERIFIER_nondet_uchar() [L220] input_125 = __VERIFIER_nondet_uchar() [L221] input_127 = __VERIFIER_nondet_uchar() [L222] input_128 = __VERIFIER_nondet_uchar() [L223] input_129 = __VERIFIER_nondet_uchar() [L224] input_139 = __VERIFIER_nondet_uchar() [L225] input_144 = __VERIFIER_nondet_uchar() [L226] input_151 = __VERIFIER_nondet_uchar() [L227] input_155 = __VERIFIER_nondet_uchar() [L228] input_156 = __VERIFIER_nondet_uchar() [L229] input_157 = __VERIFIER_nondet_uchar() [L230] input_164 = __VERIFIER_nondet_uchar() [L231] input_169 = __VERIFIER_nondet_uchar() [L232] input_173 = __VERIFIER_nondet_uchar() [L233] input_174 = __VERIFIER_nondet_uchar() [L234] input_175 = __VERIFIER_nondet_uchar() [L235] input_182 = __VERIFIER_nondet_uchar() [L236] input_187 = __VERIFIER_nondet_uchar() [L237] input_191 = __VERIFIER_nondet_uchar() [L238] input_192 = __VERIFIER_nondet_uchar() [L239] input_193 = __VERIFIER_nondet_uchar() [L240] input_200 = __VERIFIER_nondet_uchar() [L241] input_205 = __VERIFIER_nondet_uchar() [L242] input_207 = __VERIFIER_nondet_uchar() [L243] input_208 = __VERIFIER_nondet_uchar() [L244] input_209 = __VERIFIER_nondet_uchar() [L245] input_216 = __VERIFIER_nondet_uchar() [L246] input_221 = __VERIFIER_nondet_uchar() [L247] input_228 = __VERIFIER_nondet_uchar() [L248] input_232 = __VERIFIER_nondet_uchar() [L249] input_238 = __VERIFIER_nondet_uchar() [L250] input_242 = __VERIFIER_nondet_uchar() [L251] input_249 = __VERIFIER_nondet_uchar() [L252] input_253 = __VERIFIER_nondet_uchar() [L253] input_262 = __VERIFIER_nondet_uchar() [L254] input_264 = __VERIFIER_nondet_uchar() [L255] input_271 = __VERIFIER_nondet_uchar() [L256] input_278 = __VERIFIER_nondet_uchar() [L257] input_285 = __VERIFIER_nondet_uchar() [L258] input_292 = __VERIFIER_nondet_uchar() [L259] input_296 = __VERIFIER_nondet_uchar() [L260] input_303 = __VERIFIER_nondet_uchar() [L261] input_311 = __VERIFIER_nondet_uchar() [L262] input_324 = __VERIFIER_nondet_ushort() [L263] input_328 = __VERIFIER_nondet_uchar() [L264] input_334 = __VERIFIER_nondet_uchar() [L265] input_340 = __VERIFIER_nondet_uchar() [L266] input_344 = __VERIFIER_nondet_uchar() [L267] input_346 = __VERIFIER_nondet_uchar() [L268] input_350 = __VERIFIER_nondet_uchar() [L269] input_363 = __VERIFIER_nondet_uchar() [L270] input_367 = __VERIFIER_nondet_uchar() [L271] input_369 = __VERIFIER_nondet_uchar() [L272] input_373 = __VERIFIER_nondet_uchar() [L273] input_377 = __VERIFIER_nondet_uchar() [L274] input_381 = __VERIFIER_nondet_uchar() [L275] input_385 = __VERIFIER_nondet_uchar() [L276] input_389 = __VERIFIER_nondet_uchar() [L277] input_406 = __VERIFIER_nondet_uchar() [L280] SORT_1 var_17_arg_0 = state_14; [L281] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L282] SORT_16 var_17 = var_17_arg_0; [L283] SORT_16 var_19_arg_0 = var_17; [L284] SORT_16 var_19_arg_1 = var_18; [L285] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L286] SORT_1 var_22_arg_0 = state_20; [L287] var_22_arg_0 = var_22_arg_0 & mask_SORT_1 [L288] SORT_16 var_22 = var_22_arg_0; [L289] SORT_16 var_24_arg_0 = var_22; [L290] SORT_16 var_24_arg_1 = var_23; [L291] SORT_1 var_24 = var_24_arg_0 == var_24_arg_1; [L292] SORT_1 var_25_arg_0 = var_19; [L293] SORT_1 var_25_arg_1 = var_24; [L294] SORT_1 var_25 = var_25_arg_0 | var_25_arg_1; [L295] SORT_1 var_29_arg_0 = var_25; [L296] SORT_1 var_29 = ~var_29_arg_0; [L297] SORT_1 var_30_arg_0 = var_28; [L298] SORT_1 var_30_arg_1 = var_29; [L299] SORT_1 var_30 = var_30_arg_0 & var_30_arg_1; [L300] var_30 = var_30 & mask_SORT_1 [L301] SORT_1 bad_31_arg_0 = var_30; [L302] CALL __VERIFIER_assert(!(bad_31_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 11:10:03,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7b74b495a5e861e829e40f2b5977babf1bbd6b873265ff46d461edc75bc3a847 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:10:05,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:10:05,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:10:05,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:10:05,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:10:05,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:10:05,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:10:05,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:10:05,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:10:05,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:10:05,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:10:05,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:10:05,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:10:05,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:10:05,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:10:05,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:10:05,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:10:05,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:10:05,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:10:05,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:10:05,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:10:05,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:10:05,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:10:05,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:10:05,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:10:05,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:10:05,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:10:05,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:10:05,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:10:05,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:10:05,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:10:05,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:10:05,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:10:05,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:10:05,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:10:05,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:10:05,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:10:05,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:10:05,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:10:05,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:10:05,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:10:05,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 11:10:05,372 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:10:05,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:10:05,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:10:05,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:10:05,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:10:05,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:10:05,373 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:10:05,374 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:10:05,374 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:10:05,374 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:10:05,374 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:10:05,374 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:10:05,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:10:05,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:10:05,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:10:05,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:10:05,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:10:05,375 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:10:05,375 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 11:10:05,375 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 11:10:05,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:10:05,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:10:05,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:10:05,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:10:05,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 11:10:05,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:10:05,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:10:05,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:10:05,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:10:05,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:10:05,377 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 11:10:05,377 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 11:10:05,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:10:05,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:10:05,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 11:10:05,377 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_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b74b495a5e861e829e40f2b5977babf1bbd6b873265ff46d461edc75bc3a847 [2022-12-14 11:10:05,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:10:05,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:10:05,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:10:05,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:10:05,625 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:10:05,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2022-12-14 11:10:08,270 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:10:08,490 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:10:08,491 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2022-12-14 11:10:08,499 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/data/59e6effaf/f915a99827ad41b79ece8ad8a6954443/FLAGe2f0a77f5 [2022-12-14 11:10:08,513 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/data/59e6effaf/f915a99827ad41b79ece8ad8a6954443 [2022-12-14 11:10:08,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:10:08,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:10:08,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:10:08,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:10:08,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:10:08,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:08,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fbdda6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08, skipping insertion in model container [2022-12-14 11:10:08,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:08,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:10:08,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:10:08,708 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_97ef19ed-d0ef-426a-bfc9-8fab2f329116/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1107,1120] [2022-12-14 11:10:08,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:10:08,900 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:10:08,910 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_97ef19ed-d0ef-426a-bfc9-8fab2f329116/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1107,1120] [2022-12-14 11:10:08,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:10:08,992 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:10:08,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08 WrapperNode [2022-12-14 11:10:08,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:10:08,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:10:08,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:10:08,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:10:09,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,063 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1274 [2022-12-14 11:10:09,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:10:09,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:10:09,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:10:09,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:10:09,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:10:09,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:10:09,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:10:09,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:10:09,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (1/1) ... [2022-12-14 11:10:09,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:10:09,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:10:09,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:10:09,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:10:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:10:09,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:10:09,423 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:10:09,424 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:10:10,394 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:10:10,400 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:10:10,400 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:10:10,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:10:10 BoogieIcfgContainer [2022-12-14 11:10:10,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:10:10,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:10:10,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:10:10,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:10:10,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:10:08" (1/3) ... [2022-12-14 11:10:10,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79517cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:10:10, skipping insertion in model container [2022-12-14 11:10:10,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:10:08" (2/3) ... [2022-12-14 11:10:10,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79517cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:10:10, skipping insertion in model container [2022-12-14 11:10:10,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:10:10" (3/3) ... [2022-12-14 11:10:10,411 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_DAIO.c [2022-12-14 11:10:10,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:10:10,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:10:10,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:10:10,482 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;@1ef6df4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:10:10,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:10:10,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:10:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:10:10,492 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:10:10,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:10:10,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:10:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:10:10,499 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 11:10:10,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:10:10,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761709763] [2022-12-14 11:10:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:10,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:10:10,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:10:10,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:10:10,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 11:10:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:10,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 11:10:10,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:10:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:10:10,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:10:10,925 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:10:10,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761709763] [2022-12-14 11:10:10,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761709763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:10:10,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:10:10,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:10:10,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227394561] [2022-12-14 11:10:10,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:10:10,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:10:10,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:10:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:10:10,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:10:10,965 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:10:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:10:11,152 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 11:10:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:10:11,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 11:10:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:10:11,163 INFO L225 Difference]: With dead ends: 20 [2022-12-14 11:10:11,163 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 11:10:11,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:10:11,169 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:10:11,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:10:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 11:10:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 11:10:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:10:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 11:10:11,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 11:10:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:10:11,195 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 11:10:11,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:10:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 11:10:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:10:11,196 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:10:11,196 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 11:10:11,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:10:11,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:10:11,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:10:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:10:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 11:10:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:10:11,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468617818] [2022-12-14 11:10:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:11,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:10:11,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:10:11,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:10:11,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 11:10:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:11,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-14 11:10:11,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:10:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:10:12,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:10:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:10:16,298 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:10:16,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468617818] [2022-12-14 11:10:16,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468617818] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:10:16,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [292715317] [2022-12-14 11:10:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:16,299 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:10:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:10:16,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:10:16,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 11:10:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:17,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 77 conjunts are in the unsatisfiable core [2022-12-14 11:10:17,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:10:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:10:17,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:10:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:10:18,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [292715317] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:10:18,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575620420] [2022-12-14 11:10:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:10:18,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:10:18,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:10:18,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:10:18,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:10:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:10:19,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-14 11:10:19,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:10:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:10:19,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:10:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:10:21,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575620420] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:10:21,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:10:21,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 6, 6] total 13 [2022-12-14 11:10:21,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418703185] [2022-12-14 11:10:21,083 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:10:21,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 11:10:21,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:10:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 11:10:21,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-12-14 11:10:21,085 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:10:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:10:21,398 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 11:10:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:10:21,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 11:10:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:10:21,399 INFO L225 Difference]: With dead ends: 16 [2022-12-14 11:10:21,399 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 11:10:21,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:10:21,400 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:10:21,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:10:21,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 11:10:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 11:10:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:10:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 11:10:21,403 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 11:10:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:10:21,403 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 11:10:21,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:10:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 11:10:21,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:10:21,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:10:21,403 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 11:10:21,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-12-14 11:10:21,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:10:21,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 11:10:22,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:10:22,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:10:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:10:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 11:10:22,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:10:22,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300076470] [2022-12-14 11:10:22,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:10:22,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:10:22,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:10:22,018 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:10:22,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ef19ed-d0ef-426a-bfc9-8fab2f329116/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 11:10:22,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:10:22,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:10:22,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2134 conjuncts, 197 conjunts are in the unsatisfiable core [2022-12-14 11:10:22,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:10:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:10:24,356 INFO L328 TraceCheckSpWp]: Computing backward predicates...