./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f6d5806dc2a069b52e5e35ee04f1ef92bf49979b38b271db0ee312abca8de37e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:35:36,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:35:36,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:35:36,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:35:36,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:35:36,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:35:36,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:35:36,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:35:36,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:35:36,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:35:36,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:35:36,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:35:36,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:35:36,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:35:36,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:35:36,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:35:36,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:35:36,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:35:36,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:35:36,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:35:36,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:35:36,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:35:36,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:35:36,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:35:36,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:35:36,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:35:36,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:35:36,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:35:36,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:35:36,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:35:36,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:35:36,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:35:36,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:35:36,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:35:36,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:35:36,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:35:36,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:35:36,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:35:36,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:35:36,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:35:36,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:35:36,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:35:36,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:35:36,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:35:36,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:35:36,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:35:36,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:35:36,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:35:36,296 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:35:36,296 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:35:36,296 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:35:36,296 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:35:36,297 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:35:36,297 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:35:36,297 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:35:36,297 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:35:36,297 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:35:36,298 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:35:36,298 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:35:36,298 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:35:36,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:35:36,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:35:36,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:35:36,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:35:36,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:35:36,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:35:36,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:35:36,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:35:36,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:35:36,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:35:36,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:35:36,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:36,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:35:36,302 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:35:36,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:35:36,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:35:36,303 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:35:36,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:35:36,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:35:36,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:35:36,304 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_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6d5806dc2a069b52e5e35ee04f1ef92bf49979b38b271db0ee312abca8de37e [2022-11-26 00:35:36,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:35:36,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:35:36,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:35:36,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:35:36,658 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:35:36,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-11-26 00:35:39,859 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:35:40,133 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:35:40,134 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-11-26 00:35:40,144 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/data/94e010d78/ce8657494d0f47a09f24c9887e367f97/FLAG31aea495f [2022-11-26 00:35:40,181 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/data/94e010d78/ce8657494d0f47a09f24c9887e367f97 [2022-11-26 00:35:40,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:35:40,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:35:40,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:40,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:35:40,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:35:40,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581aca73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40, skipping insertion in model container [2022-11-26 00:35:40,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:35:40,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:35:40,499 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_29073c02-08a3-45da-b5d4-9526d2346b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1107,1120] [2022-11-26 00:35:40,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:40,638 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:35:40,652 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_29073c02-08a3-45da-b5d4-9526d2346b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1107,1120] [2022-11-26 00:35:40,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:40,757 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:35:40,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40 WrapperNode [2022-11-26 00:35:40,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:40,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:40,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:35:40,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:35:40,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,835 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 261 [2022-11-26 00:35:40,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:40,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:35:40,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:35:40,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:35:40,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,901 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:35:40,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:35:40,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:35:40,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:35:40,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (1/1) ... [2022-11-26 00:35:40,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:40,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:35:40,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:35:40,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:35:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:35:41,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:35:41,223 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:35:41,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:35:42,064 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:35:42,089 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:35:42,094 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:35:42,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:42 BoogieIcfgContainer [2022-11-26 00:35:42,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:35:42,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:35:42,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:35:42,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:35:42,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:35:40" (1/3) ... [2022-11-26 00:35:42,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c8e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:42, skipping insertion in model container [2022-11-26 00:35:42,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:40" (2/3) ... [2022-11-26 00:35:42,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c8e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:42, skipping insertion in model container [2022-11-26 00:35:42,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:42" (3/3) ... [2022-11-26 00:35:42,118 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-11-26 00:35:42,142 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:35:42,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:35:42,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:35:42,205 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;@11aad3d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:35:42,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:35:42,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:35:42,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:42,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:35:42,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:42,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-26 00:35:42,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:42,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896220897] [2022-11-26 00:35:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:42,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:35:42,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:35:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:35:42,821 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:35:42,823 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:35:42,824 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:35:42,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:35:42,832 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:35:42,837 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:35:42,861 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:42,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:35:42 BoogieIcfgContainer [2022-11-26 00:35:42,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:35:42,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:35:42,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:35:42,876 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:35:42,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:42" (3/4) ... [2022-11-26 00:35:42,880 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:35:42,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:35:42,882 INFO L158 Benchmark]: Toolchain (without parser) took 2696.05ms. Allocated memory is still 184.5MB. Free memory was 156.5MB in the beginning and 85.8MB in the end (delta: 70.7MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2022-11-26 00:35:42,882 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 130.0MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:42,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.38ms. Allocated memory is still 184.5MB. Free memory was 156.5MB in the beginning and 144.9MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:35:42,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.59ms. Allocated memory is still 184.5MB. Free memory was 144.9MB in the beginning and 141.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:35:42,884 INFO L158 Benchmark]: Boogie Preprocessor took 75.28ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:35:42,885 INFO L158 Benchmark]: RCFGBuilder took 1195.17ms. Allocated memory is still 184.5MB. Free memory was 139.7MB in the beginning and 124.6MB in the end (delta: 15.1MB). Peak memory consumption was 72.7MB. Max. memory is 16.1GB. [2022-11-26 00:35:42,886 INFO L158 Benchmark]: TraceAbstraction took 764.77ms. Allocated memory is still 184.5MB. Free memory was 123.5MB in the beginning and 86.8MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-26 00:35:42,886 INFO L158 Benchmark]: Witness Printer took 5.15ms. Allocated memory is still 184.5MB. Free memory was 86.8MB in the beginning and 85.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:35:42,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 130.0MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.38ms. Allocated memory is still 184.5MB. Free memory was 156.5MB in the beginning and 144.9MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.59ms. Allocated memory is still 184.5MB. Free memory was 144.9MB in the beginning and 141.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.28ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1195.17ms. Allocated memory is still 184.5MB. Free memory was 139.7MB in the beginning and 124.6MB in the end (delta: 15.1MB). Peak memory consumption was 72.7MB. Max. memory is 16.1GB. * TraceAbstraction took 764.77ms. Allocated memory is still 184.5MB. Free memory was 123.5MB in the beginning and 86.8MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 5.15ms. Allocated memory is still 184.5MB. Free memory was 86.8MB in the beginning and 85.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 106, overapproximation of bitwiseOr at line 80, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_1 var_6 = 0; [L32] const SORT_1 var_16 = 1; [L33] const SORT_3 var_33 = 0; [L34] const SORT_3 var_36 = 27; [L35] const SORT_3 var_44 = 85; [L36] const SORT_3 var_47 = 67; [L37] const SORT_3 var_50 = 78; [L39] SORT_1 input_2; [L40] SORT_3 input_4; [L41] SORT_1 input_5; [L42] SORT_3 input_39; [L44] SORT_1 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_3 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L49] SORT_3 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L51] SORT_1 init_8_arg_1 = var_6; [L52] state_7 = init_8_arg_1 [L53] SORT_1 init_10_arg_1 = var_6; [L54] state_9 = init_10_arg_1 [L55] SORT_1 init_13_arg_1 = var_6; [L56] state_12 = init_13_arg_1 [L57] SORT_1 init_18_arg_1 = var_16; [L58] state_17 = init_18_arg_1 [L59] SORT_3 init_35_arg_1 = var_33; [L60] state_34 = init_35_arg_1 [L61] SORT_3 init_43_arg_1 = var_33; [L62] state_42 = init_43_arg_1 VAL [init_10_arg_1=0, init_13_arg_1=0, init_18_arg_1=1, init_35_arg_1=0, init_43_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_3=255, msb_SORT_1=1, msb_SORT_3=128, state_12=0, state_17=1, state_34=0, state_42=0, state_7=0, state_9=0, var_16=1, var_33=0, var_36=27, var_44=85, var_47=67, var_50=78, var_6=0] [L65] input_2 = __VERIFIER_nondet_uchar() [L66] input_4 = __VERIFIER_nondet_uchar() [L67] input_5 = __VERIFIER_nondet_uchar() [L68] input_5 = input_5 & mask_SORT_1 [L69] input_39 = __VERIFIER_nondet_uchar() [L72] SORT_1 var_11_arg_0 = state_7; [L73] SORT_1 var_11_arg_1 = state_9; [L74] SORT_1 var_11 = var_11_arg_0 & var_11_arg_1; [L75] SORT_1 var_14_arg_0 = state_7; [L76] SORT_1 var_14_arg_1 = state_12; [L77] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L78] SORT_1 var_15_arg_0 = var_11; [L79] SORT_1 var_15_arg_1 = var_14; [L80] SORT_1 var_15 = var_15_arg_0 | var_15_arg_1; [L81] SORT_1 var_19_arg_0 = state_7; [L82] SORT_1 var_19_arg_1 = state_17; [L83] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L84] SORT_1 var_20_arg_0 = var_15; [L85] SORT_1 var_20_arg_1 = var_19; [L86] SORT_1 var_20 = var_20_arg_0 | var_20_arg_1; [L87] SORT_1 var_21_arg_0 = state_9; [L88] SORT_1 var_21_arg_1 = state_12; [L89] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L90] SORT_1 var_22_arg_0 = var_20; [L91] SORT_1 var_22_arg_1 = var_21; [L92] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L93] SORT_1 var_23_arg_0 = state_9; [L94] SORT_1 var_23_arg_1 = state_17; [L95] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L96] SORT_1 var_24_arg_0 = var_22; [L97] SORT_1 var_24_arg_1 = var_23; [L98] SORT_1 var_24 = var_24_arg_0 | var_24_arg_1; [L99] SORT_1 var_25_arg_0 = state_12; [L100] SORT_1 var_25_arg_1 = state_17; [L101] SORT_1 var_25 = var_25_arg_0 & var_25_arg_1; [L102] SORT_1 var_26_arg_0 = var_24; [L103] SORT_1 var_26_arg_1 = var_25; [L104] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L105] SORT_1 var_27_arg_0 = var_26; [L106] SORT_1 var_27 = ~var_27_arg_0; [L107] SORT_1 var_30_arg_0 = var_27; [L108] SORT_1 var_30 = ~var_30_arg_0; [L109] SORT_1 var_31_arg_0 = var_16; [L110] SORT_1 var_31_arg_1 = var_30; [L111] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L112] var_31 = var_31 & mask_SORT_1 [L113] SORT_1 bad_32_arg_0 = var_31; [L114] CALL __VERIFIER_assert(!(bad_32_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:35:42,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f6d5806dc2a069b52e5e35ee04f1ef92bf49979b38b271db0ee312abca8de37e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:35:45,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:35:45,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:35:45,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:35:45,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:35:45,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:35:45,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:35:45,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:35:45,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:35:45,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:35:45,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:35:45,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:35:45,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:35:45,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:35:45,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:35:45,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:35:45,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:35:45,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:35:45,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:35:45,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:35:45,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:35:45,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:35:45,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:35:45,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:35:45,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:35:45,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:35:45,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:35:45,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:35:45,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:35:45,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:35:45,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:35:45,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:35:45,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:35:45,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:35:45,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:35:45,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:35:45,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:35:45,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:35:45,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:35:45,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:35:45,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:35:45,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:35:45,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:35:45,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:35:45,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:35:45,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:35:45,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:35:45,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:35:45,821 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:35:45,821 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:35:45,821 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:35:45,822 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:35:45,823 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:35:45,823 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:35:45,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:35:45,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:35:45,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:35:45,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:35:45,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:35:45,825 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:35:45,826 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:35:45,826 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:35:45,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:35:45,826 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:35:45,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:35:45,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:35:45,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:35:45,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:35:45,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:45,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:35:45,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:35:45,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:35:45,829 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:35:45,829 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:35:45,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:35:45,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:35:45,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:35:45,830 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_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6d5806dc2a069b52e5e35ee04f1ef92bf49979b38b271db0ee312abca8de37e [2022-11-26 00:35:46,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:35:46,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:35:46,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:35:46,303 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:35:46,304 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:35:46,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-11-26 00:35:49,634 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:35:49,941 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:35:49,941 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-11-26 00:35:49,950 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/data/75529ca37/17ed874cab8743fda80eebc38ceee2b4/FLAG864b3f6c7 [2022-11-26 00:35:49,978 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/data/75529ca37/17ed874cab8743fda80eebc38ceee2b4 [2022-11-26 00:35:49,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:35:49,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:35:49,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:50,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:35:50,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:35:50,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:49" (1/1) ... [2022-11-26 00:35:50,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3334253d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50, skipping insertion in model container [2022-11-26 00:35:50,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:49" (1/1) ... [2022-11-26 00:35:50,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:35:50,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:35:50,263 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_29073c02-08a3-45da-b5d4-9526d2346b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1107,1120] [2022-11-26 00:35:50,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:50,428 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:35:50,445 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_29073c02-08a3-45da-b5d4-9526d2346b52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1107,1120] [2022-11-26 00:35:50,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:50,548 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:35:50,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50 WrapperNode [2022-11-26 00:35:50,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:50,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:50,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:35:50,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:35:50,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,657 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 261 [2022-11-26 00:35:50,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:50,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:35:50,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:35:50,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:35:50,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:35:50,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:35:50,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:35:50,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:35:50,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (1/1) ... [2022-11-26 00:35:50,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:50,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:35:50,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:35:50,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:35:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:35:50,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:35:51,032 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:35:51,034 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:35:51,398 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:35:51,406 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:35:51,406 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:35:51,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:51 BoogieIcfgContainer [2022-11-26 00:35:51,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:35:51,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:35:51,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:35:51,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:35:51,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:35:49" (1/3) ... [2022-11-26 00:35:51,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8883239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:51, skipping insertion in model container [2022-11-26 00:35:51,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:50" (2/3) ... [2022-11-26 00:35:51,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8883239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:51, skipping insertion in model container [2022-11-26 00:35:51,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:51" (3/3) ... [2022-11-26 00:35:51,419 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c [2022-11-26 00:35:51,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:35:51,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:35:51,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:35:51,523 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;@6da489a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:35:51,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:35:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:35:51,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:51,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:35:51,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:51,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:51,564 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:35:51,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:35:51,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695496229] [2022-11-26 00:35:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:51,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:35:51,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:35:51,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:35:51,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:35:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:51,816 WARN L261 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-26 00:35:51,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:35:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:52,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:35:52,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:35:52,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695496229] [2022-11-26 00:35:52,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695496229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:52,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:35:52,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:35:52,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792016484] [2022-11-26 00:35:52,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:52,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:35:52,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:35:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:35:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:35:52,238 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:52,327 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:35:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:35:52,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:35:52,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:52,340 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:35:52,340 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:35:52,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:35:52,351 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:52,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:35:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:35:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:35:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:35:52,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:35:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:52,392 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:35:52,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:35:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:35:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:35:52,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:52,393 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:52,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:35:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:35:52,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:35:52,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:35:52,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532745202] [2022-11-26 00:35:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:52,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:35:52,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:35:52,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:35:52,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:35:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:52,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-26 00:35:52,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:35:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:35:53,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:36:03,206 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:36:44,208 WARN L233 SmtUtils]: Spent 34.67s on a formula simplification. DAG size of input: 217 DAG size of output: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:36:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:44,222 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:36:44,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532745202] [2022-11-26 00:36:44,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532745202] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:36:44,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1557503708] [2022-11-26 00:36:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:44,223 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:36:44,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:36:44,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:36:44,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:36:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:44,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-26 00:36:44,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:36:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:44,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:37:20,000 WARN L233 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:37:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:20,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1557503708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:37:20,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597401303] [2022-11-26 00:37:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:20,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:20,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:20,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:20,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:37:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:20,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-26 00:37:20,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:20,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:38:01,469 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:38:21,888 WARN L233 SmtUtils]: Spent 12.18s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:38:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:21,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597401303] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:38:21,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:38:21,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 6, 6] total 16 [2022-11-26 00:38:21,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434732029] [2022-11-26 00:38:21,956 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:38:21,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-26 00:38:21,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:38:21,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-26 00:38:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=145, Unknown=27, NotChecked=0, Total=240 [2022-11-26 00:38:21,959 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:24,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-26 00:38:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:24,742 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-26 00:38:24,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:38:24,744 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:38:24,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:24,745 INFO L225 Difference]: With dead ends: 16 [2022-11-26 00:38:24,745 INFO L226 Difference]: Without dead ends: 14 [2022-11-26 00:38:24,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 145.5s TimeCoverageRelationStatistics Valid=102, Invalid=213, Unknown=27, NotChecked=0, Total=342 [2022-11-26 00:38:24,747 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:24,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-26 00:38:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-26 00:38:24,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-26 00:38:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 00:38:24,756 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-26 00:38:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:24,756 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 00:38:24,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 00:38:24,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:38:24,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:24,758 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:38:24,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:38:24,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:38:25,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:38:25,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:38:25,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-26 00:38:25,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:38:25,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661250492] [2022-11-26 00:38:25,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:38:25,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:38:25,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:38:25,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:38:25,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-26 00:38:25,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:38:25,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:38:25,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-26 00:38:25,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:38:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:26,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:38:57,918 WARN L233 SmtUtils]: Spent 28.38s on a formula simplification that was a NOOP. DAG size: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:39:47,159 WARN L233 SmtUtils]: Spent 42.76s on a formula simplification. DAG size of input: 334 DAG size of output: 205 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:20,727 WARN L233 SmtUtils]: Spent 1.43m on a formula simplification. DAG size of input: 493 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:42:28,012 WARN L233 SmtUtils]: Spent 56.76s on a formula simplification. DAG size of input: 382 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:42:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:28,029 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:42:28,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661250492] [2022-11-26 00:42:28,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661250492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:42:28,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1367934618] [2022-11-26 00:42:28,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:42:28,030 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:42:28,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:42:28,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:42:28,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 00:42:28,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:42:28,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:42:28,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-26 00:42:28,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:42:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:28,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:43:18,721 WARN L233 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:19,698 WARN L233 SmtUtils]: Spent 1.69m on a formula simplification. DAG size of input: 377 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:45:20,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1367934618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:20,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366126303] [2022-11-26 00:45:20,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:45:20,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:20,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:20,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:45:20,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29073c02-08a3-45da-b5d4-9526d2346b52/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:45:20,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:45:20,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:45:20,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-26 00:45:20,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:45:20,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:46:19,771 WARN L233 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:49:30,465 WARN L233 SmtUtils]: Spent 2.75m on a formula simplification. DAG size of input: 380 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)