./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fc47d239eb8ddc8b536e8e37c5dca19e8fa070b9160b583fbb14ebdc83e8fec0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:09:51,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:09:51,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:09:51,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:09:51,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:09:51,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:09:51,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:09:51,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:09:51,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:09:51,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:09:51,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:09:51,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:09:51,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:09:51,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:09:51,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:09:51,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:09:51,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:09:51,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:09:51,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:09:51,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:09:51,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:09:51,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:09:51,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:09:51,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:09:51,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:09:51,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:09:51,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:09:51,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:09:51,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:09:51,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:09:51,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:09:51,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:09:51,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:09:51,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:09:51,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:09:51,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:09:51,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:09:51,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:09:51,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:09:51,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:09:51,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:09:51,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:09:51,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:09:51,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:09:51,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:09:51,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:09:51,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:09:51,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:09:51,327 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:09:51,328 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:09:51,328 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:09:51,328 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:09:51,329 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:09:51,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:09:51,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:09:51,330 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:09:51,330 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:09:51,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:09:51,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:09:51,330 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:09:51,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:09:51,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:09:51,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:09:51,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:09:51,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:09:51,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:09:51,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:09:51,333 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:09:51,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:09:51,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:09:51,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:09:51,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:09:51,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:09:51,334 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:09:51,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:09:51,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:09:51,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:09:51,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:09:51,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:09:51,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:09:51,336 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_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc47d239eb8ddc8b536e8e37c5dca19e8fa070b9160b583fbb14ebdc83e8fec0 [2022-11-19 07:09:51,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:09:51,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:09:51,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:09:51,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:09:51,650 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:09:51,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c [2022-11-19 07:09:51,718 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data/c882732f9/ef09d858b656410bb9295f1fcbb96d83/FLAG6d90757ae [2022-11-19 07:09:52,247 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:09:52,248 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c [2022-11-19 07:09:52,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data/c882732f9/ef09d858b656410bb9295f1fcbb96d83/FLAG6d90757ae [2022-11-19 07:09:52,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data/c882732f9/ef09d858b656410bb9295f1fcbb96d83 [2022-11-19 07:09:52,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:09:52,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:09:52,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:09:52,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:09:52,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:09:52,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:52" (1/1) ... [2022-11-19 07:09:52,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a85ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:52, skipping insertion in model container [2022-11-19 07:09:52,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:52" (1/1) ... [2022-11-19 07:09:52,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:09:52,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:09:52,870 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c[1107,1120] [2022-11-19 07:09:53,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:53,136 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:09:53,148 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c[1107,1120] [2022-11-19 07:09:53,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:53,394 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:09:53,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53 WrapperNode [2022-11-19 07:09:53,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:09:53,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:09:53,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:09:53,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:09:53,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,516 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1447 [2022-11-19 07:09:53,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:09:53,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:09:53,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:09:53,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:09:53,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,604 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:09:53,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:09:53,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:09:53,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:09:53,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (1/1) ... [2022-11-19 07:09:53,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:09:53,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:53,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:09:53,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:09:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:09:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:09:54,125 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:09:54,127 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:09:55,652 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:09:59,028 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:09:59,029 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:09:59,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:59 BoogieIcfgContainer [2022-11-19 07:09:59,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:09:59,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:09:59,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:09:59,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:09:59,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:09:52" (1/3) ... [2022-11-19 07:09:59,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715238b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:59, skipping insertion in model container [2022-11-19 07:09:59,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:53" (2/3) ... [2022-11-19 07:09:59,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715238b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:59, skipping insertion in model container [2022-11-19 07:09:59,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:59" (3/3) ... [2022-11-19 07:09:59,044 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p14.c [2022-11-19 07:09:59,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:09:59,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:09:59,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:09:59,154 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;@3639165e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:09:59,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:09:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:09:59,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:09:59,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:59,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:09:59,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:59,186 INFO L85 PathProgramCache]: Analyzing trace with hash 23447664, now seen corresponding path program 1 times [2022-11-19 07:09:59,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:59,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808962066] [2022-11-19 07:09:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:09:59,548 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:09:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:09:59,671 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:09:59,674 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:09:59,675 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:09:59,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:09:59,683 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:09:59,688 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:09:59,713 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 07:09:59,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:09:59 BoogieIcfgContainer [2022-11-19 07:09:59,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:09:59,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:09:59,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:09:59,724 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:09:59,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:59" (3/4) ... [2022-11-19 07:09:59,728 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:09:59,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:09:59,730 INFO L158 Benchmark]: Toolchain (without parser) took 7148.88ms. Allocated memory was 134.2MB in the beginning and 406.8MB in the end (delta: 272.6MB). Free memory was 97.0MB in the beginning and 322.8MB in the end (delta: -225.7MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2022-11-19 07:09:59,731 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:09:59,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 809.36ms. Allocated memory is still 134.2MB. Free memory was 96.9MB in the beginning and 83.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:09:59,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.61ms. Allocated memory is still 134.2MB. Free memory was 83.7MB in the beginning and 72.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:09:59,733 INFO L158 Benchmark]: Boogie Preprocessor took 117.38ms. Allocated memory is still 134.2MB. Free memory was 72.0MB in the beginning and 65.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:09:59,734 INFO L158 Benchmark]: RCFGBuilder took 5398.03ms. Allocated memory was 134.2MB in the beginning and 406.8MB in the end (delta: 272.6MB). Free memory was 65.2MB in the beginning and 128.7MB in the end (delta: -63.6MB). Peak memory consumption was 214.0MB. Max. memory is 16.1GB. [2022-11-19 07:09:59,741 INFO L158 Benchmark]: TraceAbstraction took 687.15ms. Allocated memory is still 406.8MB. Free memory was 127.7MB in the beginning and 322.8MB in the end (delta: -195.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:09:59,741 INFO L158 Benchmark]: Witness Printer took 5.01ms. Allocated memory is still 406.8MB. Free memory is still 322.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:09:59,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 809.36ms. Allocated memory is still 134.2MB. Free memory was 96.9MB in the beginning and 83.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.61ms. Allocated memory is still 134.2MB. Free memory was 83.7MB in the beginning and 72.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 117.38ms. Allocated memory is still 134.2MB. Free memory was 72.0MB in the beginning and 65.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 5398.03ms. Allocated memory was 134.2MB in the beginning and 406.8MB in the end (delta: 272.6MB). Free memory was 65.2MB in the beginning and 128.7MB in the end (delta: -63.6MB). Peak memory consumption was 214.0MB. Max. memory is 16.1GB. * TraceAbstraction took 687.15ms. Allocated memory is still 406.8MB. Free memory was 127.7MB in the beginning and 322.8MB in the end (delta: -195.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.01ms. Allocated memory is still 406.8MB. Free memory is still 322.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 159, overapproximation of bitwiseComplement at line 154, overapproximation of bitwiseAnd at line 149. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 3); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (3 - 1); [L37] const SORT_78 mask_SORT_78 = (SORT_78)-1 >> (sizeof(SORT_78) * 8 - 32); [L38] const SORT_78 msb_SORT_78 = (SORT_78)1 << (32 - 1); [L40] const SORT_107 mask_SORT_107 = (SORT_107)-1 >> (sizeof(SORT_107) * 8 - 4); [L41] const SORT_107 msb_SORT_107 = (SORT_107)1 << (4 - 1); [L43] const SORT_174 mask_SORT_174 = (SORT_174)-1 >> (sizeof(SORT_174) * 8 - 2); [L44] const SORT_174 msb_SORT_174 = (SORT_174)1 << (2 - 1); [L46] const SORT_7 var_8 = 0; [L47] const SORT_5 var_12 = 0; [L48] const SORT_7 var_16 = 2; [L49] const SORT_1 var_19 = 0; [L50] const SORT_3 var_26 = 0; [L51] const SORT_1 var_35 = 1; [L52] const SORT_7 var_57 = 1; [L53] const SORT_7 var_62 = 4; [L54] const SORT_7 var_64 = 5; [L55] const SORT_7 var_68 = 3; [L56] const SORT_78 var_80 = 0; [L57] const SORT_3 var_94 = 2; [L58] const SORT_7 var_124 = 7; [L59] const SORT_7 var_129 = 6; [L60] const SORT_3 var_183 = 31; [L62] SORT_1 input_2; [L63] SORT_3 input_4; [L64] SORT_5 input_6; [L65] SORT_3 input_171; [L66] SORT_3 input_172; [L67] SORT_3 input_173; [L68] SORT_3 input_182; [L69] SORT_3 input_192; [L70] SORT_3 input_193; [L71] SORT_3 input_194; [L72] SORT_3 input_197; [L73] SORT_3 input_216; [L74] SORT_3 input_217; [L75] SORT_3 input_218; [L76] SORT_3 input_221; [L77] SORT_3 input_223; [L78] SORT_174 input_237; [L79] SORT_174 input_238; [L80] SORT_174 input_239; [L82] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L83] SORT_5 state_13 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L84] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_3 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L86] SORT_3 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_3 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L88] SORT_3 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L89] SORT_3 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L90] SORT_3 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_3 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L96] SORT_7 init_10_arg_1 = var_8; [L97] state_9 = init_10_arg_1 [L98] SORT_5 init_14_arg_1 = var_12; [L99] state_13 = init_14_arg_1 [L100] SORT_1 init_21_arg_1 = var_19; [L101] state_20 = init_21_arg_1 [L102] SORT_3 init_28_arg_1 = var_26; [L103] state_27 = init_28_arg_1 [L104] SORT_3 init_30_arg_1 = var_26; [L105] state_29 = init_30_arg_1 [L106] SORT_3 init_40_arg_1 = var_26; [L107] state_39 = init_40_arg_1 [L108] SORT_3 init_42_arg_1 = var_26; [L109] state_41 = init_42_arg_1 [L110] SORT_3 init_44_arg_1 = var_26; [L111] state_43 = init_44_arg_1 [L112] SORT_3 init_46_arg_1 = var_26; [L113] state_45 = init_46_arg_1 [L114] SORT_3 init_48_arg_1 = var_26; [L115] state_47 = init_48_arg_1 [L116] SORT_3 init_50_arg_1 = var_26; [L117] state_49 = init_50_arg_1 [L118] SORT_3 init_52_arg_1 = var_26; [L119] state_51 = init_52_arg_1 [L120] SORT_3 init_54_arg_1 = var_26; [L121] state_53 = init_54_arg_1 VAL [init_10_arg_1=0, init_14_arg_1=0, init_21_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, mask_SORT_1=1, mask_SORT_107=15, mask_SORT_174=3, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_7=7, mask_SORT_78=4294967295, msb_SORT_1=1, msb_SORT_107=8, msb_SORT_174=2, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_7=4, msb_SORT_78=2147483648, state_13=0, state_20=0, state_27=0, state_29=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_9=0, var_12=0, var_124=7, var_129=6, var_16=2, var_183=31, var_19=0, var_26=0, var_35=1, var_57=1, var_62=4, var_64=5, var_68=3, var_8=0, var_80=0, var_94=2] [L124] input_2 = __VERIFIER_nondet_uchar() [L125] input_4 = __VERIFIER_nondet_uchar() [L126] input_6 = __VERIFIER_nondet_ushort() [L127] input_171 = __VERIFIER_nondet_uchar() [L128] input_172 = __VERIFIER_nondet_uchar() [L129] input_173 = __VERIFIER_nondet_uchar() [L130] input_182 = __VERIFIER_nondet_uchar() [L131] input_192 = __VERIFIER_nondet_uchar() [L132] input_193 = __VERIFIER_nondet_uchar() [L133] input_194 = __VERIFIER_nondet_uchar() [L134] input_197 = __VERIFIER_nondet_uchar() [L135] input_216 = __VERIFIER_nondet_uchar() [L136] input_217 = __VERIFIER_nondet_uchar() [L137] input_218 = __VERIFIER_nondet_uchar() [L138] input_221 = __VERIFIER_nondet_uchar() [L139] input_223 = __VERIFIER_nondet_uchar() [L140] input_237 = __VERIFIER_nondet_uchar() [L141] input_238 = __VERIFIER_nondet_uchar() [L142] input_239 = __VERIFIER_nondet_uchar() [L145] SORT_7 var_11_arg_0 = state_9; [L146] SORT_1 var_11 = var_11_arg_0 >> 2; [L147] SORT_5 var_15_arg_0 = state_13; [L148] SORT_7 var_15 = var_15_arg_0 >> 9; [L149] var_15 = var_15 & mask_SORT_7 [L150] SORT_7 var_17_arg_0 = var_15; [L151] SORT_7 var_17_arg_1 = var_16; [L152] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L153] SORT_1 var_18_arg_0 = var_17; [L154] SORT_1 var_18 = ~var_18_arg_0; [L155] SORT_1 var_22_arg_0 = state_20; [L156] SORT_1 var_22 = ~var_22_arg_0; [L157] SORT_1 var_23_arg_0 = var_18; [L158] SORT_1 var_23_arg_1 = var_22; [L159] SORT_1 var_23 = var_23_arg_0 | var_23_arg_1; [L160] SORT_1 var_24_arg_0 = var_11; [L161] SORT_1 var_24_arg_1 = var_23; [L162] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L163] SORT_1 var_25_arg_0 = var_24; [L164] SORT_1 var_25 = ~var_25_arg_0; [L165] SORT_3 var_31_arg_0 = state_27; [L166] SORT_3 var_31_arg_1 = state_29; [L167] SORT_1 var_31 = var_31_arg_0 == var_31_arg_1; [L168] SORT_1 var_32_arg_0 = var_25; [L169] SORT_1 var_32_arg_1 = var_31; [L170] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L171] SORT_1 var_36_arg_0 = var_32; [L172] SORT_1 var_36 = ~var_36_arg_0; [L173] SORT_1 var_37_arg_0 = var_35; [L174] SORT_1 var_37_arg_1 = var_36; [L175] SORT_1 var_37 = var_37_arg_0 & var_37_arg_1; [L176] var_37 = var_37 & mask_SORT_1 [L177] SORT_1 bad_38_arg_0 = var_37; [L178] CALL __VERIFIER_assert(!(bad_38_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:09:59,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fc47d239eb8ddc8b536e8e37c5dca19e8fa070b9160b583fbb14ebdc83e8fec0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:10:02,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:10:02,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:10:02,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:10:02,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:10:02,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:10:02,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:10:02,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:10:02,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:10:02,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:10:02,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:10:02,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:10:02,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:10:02,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:10:02,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:10:02,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:10:02,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:10:02,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:10:02,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:10:02,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:10:02,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:10:02,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:10:02,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:10:02,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:10:02,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:10:02,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:10:02,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:10:02,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:10:02,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:10:02,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:10:02,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:10:02,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:10:02,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:10:02,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:10:02,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:10:02,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:10:02,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:10:02,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:10:02,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:10:02,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:10:02,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:10:02,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:10:02,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:10:02,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:10:02,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:10:02,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:10:02,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:10:02,347 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:10:02,348 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:10:02,348 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:10:02,348 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:10:02,349 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:10:02,350 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:10:02,350 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:10:02,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:10:02,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:10:02,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:10:02,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:10:02,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:10:02,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:10:02,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:10:02,354 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:10:02,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:10:02,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:10:02,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:10:02,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:10:02,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:10:02,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:10:02,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:02,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:10:02,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:10:02,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:10:02,357 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:10:02,358 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:10:02,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:10:02,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:10:02,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:10:02,359 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_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc47d239eb8ddc8b536e8e37c5dca19e8fa070b9160b583fbb14ebdc83e8fec0 [2022-11-19 07:10:02,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:10:02,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:10:02,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:10:02,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:10:02,853 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:10:02,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c [2022-11-19 07:10:02,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data/82326a1f8/397b88379f304435b0ee927c78dd9e5d/FLAG81375bef6 [2022-11-19 07:10:03,583 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:10:03,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c [2022-11-19 07:10:03,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data/82326a1f8/397b88379f304435b0ee927c78dd9e5d/FLAG81375bef6 [2022-11-19 07:10:03,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/data/82326a1f8/397b88379f304435b0ee927c78dd9e5d [2022-11-19 07:10:03,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:10:03,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:10:03,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:03,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:10:03,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:10:03,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:03" (1/1) ... [2022-11-19 07:10:03,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1d92b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:03, skipping insertion in model container [2022-11-19 07:10:03,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:03" (1/1) ... [2022-11-19 07:10:03,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:10:03,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:10:04,106 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c[1107,1120] [2022-11-19 07:10:04,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:04,385 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:10:04,396 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p14.c[1107,1120] [2022-11-19 07:10:04,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:04,613 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:10:04,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04 WrapperNode [2022-11-19 07:10:04,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:04,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:10:04,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:10:04,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:10:04,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,753 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1041 [2022-11-19 07:10:04,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:10:04,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:10:04,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:10:04,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:10:04,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,828 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:10:04,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:10:04,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:10:04,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:10:04,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (1/1) ... [2022-11-19 07:10:04,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:04,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:04,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:10:04,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:10:04,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:10:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:10:05,303 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:10:05,309 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:10:06,864 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:10:06,871 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:10:06,872 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:10:06,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:10:06 BoogieIcfgContainer [2022-11-19 07:10:06,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:10:06,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:10:06,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:10:06,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:10:06,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:10:03" (1/3) ... [2022-11-19 07:10:06,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653e4359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:10:06, skipping insertion in model container [2022-11-19 07:10:06,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:04" (2/3) ... [2022-11-19 07:10:06,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653e4359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:10:06, skipping insertion in model container [2022-11-19 07:10:06,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:10:06" (3/3) ... [2022-11-19 07:10:06,883 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p14.c [2022-11-19 07:10:06,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:10:06,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:10:06,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:10:06,967 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;@4c4ad799, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:10:06,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:10:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:06,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:10:06,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:06,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:10:06,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:06,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 07:10:07,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:07,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835664125] [2022-11-19 07:10:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:07,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:10:07,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:07,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:10:07,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:10:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:07,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 07:10:07,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:07,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:07,562 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:07,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835664125] [2022-11-19 07:10:07,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835664125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:07,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:07,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:07,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687660842] [2022-11-19 07:10:07,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:07,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:10:07,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:10:07,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:10:07,607 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:07,759 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 07:10:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:10:07,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:10:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:07,771 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:10:07,771 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:10:07,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:07,779 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:07,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:10:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:10:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 07:10:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 07:10:07,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 07:10:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:07,819 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 07:10:07,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 07:10:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:10:07,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:07,821 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:07,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:08,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:10:08,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:08,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:08,034 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 07:10:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23797210] [2022-11-19 07:10:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:08,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:10:08,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:08,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:10:08,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:10:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:08,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 07:10:08,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:09,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:09,529 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:09,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23797210] [2022-11-19 07:10:09,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23797210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:09,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1622118265] [2022-11-19 07:10:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:09,536 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:10:09,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:10:09,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:10:09,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:10:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:10,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-19 07:10:10,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:11,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:11,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1622118265] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:11,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047814484] [2022-11-19 07:10:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:11,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:11,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:11,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:11,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:10:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:11,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-19 07:10:11,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:12,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:12,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047814484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:12,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:10:12,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 5, 7, 6] total 16 [2022-11-19 07:10:12,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633587246] [2022-11-19 07:10:12,706 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:10:12,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 07:10:12,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:12,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 07:10:12,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:10:12,709 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:13,102 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 07:10:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:10:13,108 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:10:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:13,108 INFO L225 Difference]: With dead ends: 16 [2022-11-19 07:10:13,109 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:10:13,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:10:13,110 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:13,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 15 Unchecked, 0.3s Time] [2022-11-19 07:10:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:10:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 07:10:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 07:10:13,115 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 07:10:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:13,116 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 07:10:13,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 07:10:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:10:13,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:13,117 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:10:13,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:13,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:13,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:13,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:10:13,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:13,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 07:10:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:13,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028265924] [2022-11-19 07:10:13,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:10:13,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:10:13,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:13,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:10:13,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:10:14,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:10:14,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:10:14,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-19 07:10:14,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:14,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:16,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:16,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028265924] [2022-11-19 07:10:16,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028265924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:16,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [615532064] [2022-11-19 07:10:16,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:10:16,279 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:10:16,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:10:16,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:10:16,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 07:10:17,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:10:17,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:10:17,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-19 07:10:17,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:18,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:19,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [615532064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:19,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201368773] [2022-11-19 07:10:19,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:10:19,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:19,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:19,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:19,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:10:19,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:10:19,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:10:19,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-19 07:10:19,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:20,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:00,716 WARN L233 SmtUtils]: Spent 1.56m on a formula simplification. DAG size of input: 523 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:01,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201368773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:01,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:12:01,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 6, 9, 8] total 24 [2022-11-19 07:12:01,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386655432] [2022-11-19 07:12:01,376 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:12:01,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:12:01,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:01,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:12:01,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=418, Unknown=1, NotChecked=0, Total=552 [2022-11-19 07:12:01,378 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:12:02,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:02,359 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-19 07:12:02,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:12:02,360 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:12:02,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:02,361 INFO L225 Difference]: With dead ends: 21 [2022-11-19 07:12:02,361 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 07:12:02,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 99.3s TimeCoverageRelationStatistics Valid=210, Invalid=659, Unknown=1, NotChecked=0, Total=870 [2022-11-19 07:12:02,363 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:02,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 44 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-19 07:12:02,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 07:12:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-11-19 07:12:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:12:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-19 07:12:02,376 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-11-19 07:12:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:02,376 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-19 07:12:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:12:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-19 07:12:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:12:02,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:02,377 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-19 07:12:02,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:02,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:02,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:02,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:02,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:02,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-19 07:12:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:02,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542662477] [2022-11-19 07:12:02,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:12:02,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:02,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:02,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:03,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:12:03,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:12:03,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:12:04,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 133 conjunts are in the unsatisfiable core [2022-11-19 07:12:04,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:12:12,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:22,035 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 464 DAG size of output: 319 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:31,461 WARN L233 SmtUtils]: Spent 11.87m on a formula simplification. DAG size of input: 1012 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:24:34,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:24:34,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542662477] [2022-11-19 07:24:34,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542662477] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:24:34,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [586736570] [2022-11-19 07:24:34,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:24:34,855 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:24:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:24:34,862 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:24:34,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777bc5f-f4d5-4e41-b7b2-4ff7839f24e6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 07:24:36,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:24:36,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:24:36,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 145 conjunts are in the unsatisfiable core [2022-11-19 07:24:36,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:24:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:24:42,079 INFO L328 TraceCheckSpWp]: Computing backward predicates...