./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:18:23,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:18:23,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:18:23,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:18:23,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:18:23,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:18:23,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:18:23,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:18:23,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:18:23,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:18:23,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:18:23,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:18:23,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:18:23,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:18:23,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:18:23,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:18:23,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:18:23,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:18:23,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:18:23,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:18:23,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:18:23,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:18:23,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:18:23,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:18:23,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:18:23,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:18:23,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:18:23,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:18:23,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:18:23,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:18:23,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:18:23,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:18:23,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:18:23,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:18:23,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:18:23,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:18:23,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:18:23,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:18:23,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:18:23,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:18:23,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:18:23,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:18:23,245 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:18:23,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:18:23,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:18:23,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:18:23,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:18:23,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:18:23,247 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:18:23,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:18:23,248 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:18:23,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:18:23,249 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:18:23,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:18:23,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:18:23,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:18:23,250 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:18:23,251 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:18:23,251 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:18:23,251 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:18:23,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:18:23,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:18:23,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:18:23,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:18:23,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:18:23,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:18:23,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:18:23,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:18:23,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:18:23,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:18:23,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:18:23,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:18:23,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:18:23,256 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:18:23,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:18:23,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:18:23,256 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:18:23,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:18:23,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:18:23,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:18:23,257 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_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a [2022-11-22 02:18:23,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:18:23,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:18:23,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:18:23,586 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:18:23,586 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:18:23,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-22 02:18:26,704 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:18:26,968 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:18:26,968 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-22 02:18:26,977 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/data/348782e71/e69ea874eb2443ea88fb53539be09430/FLAGf1e2877b2 [2022-11-22 02:18:26,997 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/data/348782e71/e69ea874eb2443ea88fb53539be09430 [2022-11-22 02:18:27,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:18:27,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:18:27,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:27,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:18:27,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:18:27,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:26" (1/1) ... [2022-11-22 02:18:27,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5065f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27, skipping insertion in model container [2022-11-22 02:18:27,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:26" (1/1) ... [2022-11-22 02:18:27,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:18:27,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:18:27,231 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-22 02:18:27,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:27,285 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:18:27,298 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-22 02:18:27,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:27,341 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:18:27,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27 WrapperNode [2022-11-22 02:18:27,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:27,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:27,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:18:27,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:18:27,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,389 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-11-22 02:18:27,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:27,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:18:27,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:18:27,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:18:27,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:18:27,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:18:27,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:18:27,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:18:27,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (1/1) ... [2022-11-22 02:18:27,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:18:27,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:27,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:18:27,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:18:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:18:27,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:18:27,615 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:18:27,617 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:18:27,854 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:18:27,871 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:18:27,871 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:18:27,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:27 BoogieIcfgContainer [2022-11-22 02:18:27,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:18:27,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:18:27,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:18:27,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:18:27,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:18:26" (1/3) ... [2022-11-22 02:18:27,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa1ba9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:27, skipping insertion in model container [2022-11-22 02:18:27,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:27" (2/3) ... [2022-11-22 02:18:27,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa1ba9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:27, skipping insertion in model container [2022-11-22 02:18:27,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:27" (3/3) ... [2022-11-22 02:18:27,884 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2022-11-22 02:18:27,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:18:27,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:18:27,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:18:27,959 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;@4c4ac7fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:18:27,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:18:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:18:27,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:27,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:18:27,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:27,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-22 02:18:27,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:27,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459241094] [2022-11-22 02:18:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:27,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:28,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:28,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459241094] [2022-11-22 02:18:28,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459241094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:28,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:28,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:18:28,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175468354] [2022-11-22 02:18:28,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:28,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:18:28,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:28,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:18:28,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:18:28,925 INFO L87 Difference]: Start difference. First 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:29,014 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-11-22 02:18:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:18:29,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-22 02:18:29,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:29,025 INFO L225 Difference]: With dead ends: 15 [2022-11-22 02:18:29,026 INFO L226 Difference]: Without dead ends: 9 [2022-11-22 02:18:29,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:18:29,032 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:29,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:18:29,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-22 02:18:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-11-22 02:18:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-22 02:18:29,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-11-22 02:18:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:29,073 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-22 02:18:29,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:29,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-22 02:18:29,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:18:29,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:29,075 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-22 02:18:29,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:18:29,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2022-11-22 02:18:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:29,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789490231] [2022-11-22 02:18:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:29,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:18:29,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:18:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:18:29,380 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:18:29,381 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:18:29,383 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:18:29,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:18:29,389 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-22 02:18:29,393 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:18:29,411 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:18:29,412 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:18:29,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:18:29 BoogieIcfgContainer [2022-11-22 02:18:29,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:18:29,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:18:29,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:18:29,421 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:18:29,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:27" (3/4) ... [2022-11-22 02:18:29,425 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 02:18:29,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:18:29,426 INFO L158 Benchmark]: Toolchain (without parser) took 2421.54ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 121.9MB in the beginning and 115.8MB in the end (delta: 6.1MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2022-11-22 02:18:29,427 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:18:29,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.40ms. Allocated memory is still 153.1MB. Free memory was 121.9MB in the beginning and 111.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 02:18:29,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.70ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 109.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:18:29,429 INFO L158 Benchmark]: Boogie Preprocessor took 49.65ms. Allocated memory is still 153.1MB. Free memory was 109.4MB in the beginning and 108.5MB in the end (delta: 872.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:18:29,429 INFO L158 Benchmark]: RCFGBuilder took 434.01ms. Allocated memory is still 153.1MB. Free memory was 108.1MB in the beginning and 94.7MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 02:18:29,430 INFO L158 Benchmark]: TraceAbstraction took 1543.41ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 94.7MB in the beginning and 115.8MB in the end (delta: -21.1MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-11-22 02:18:29,430 INFO L158 Benchmark]: Witness Printer took 4.94ms. Allocated memory is still 184.5MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:18:29,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.40ms. Allocated memory is still 153.1MB. Free memory was 121.9MB in the beginning and 111.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.70ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 109.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.65ms. Allocated memory is still 153.1MB. Free memory was 109.4MB in the beginning and 108.5MB in the end (delta: 872.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 434.01ms. Allocated memory is still 153.1MB. Free memory was 108.1MB in the beginning and 94.7MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1543.41ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 94.7MB in the beginning and 115.8MB in the end (delta: -21.1MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Witness Printer took 4.94ms. Allocated memory is still 184.5MB. Free memory is still 115.8MB. 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: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 76, overapproximation of bitwiseAnd at line 48. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 32); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = 3; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uint() & mask_SORT_2; [L41] SORT_2 init_7_arg_1 = var_4; [L42] state_5 = init_7_arg_1 [L43] SORT_2 init_8_arg_1 = var_4; [L44] state_6 = init_8_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=3, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] 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: 1.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 3 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-22 02:18:29,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:18:32,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:18:32,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:18:32,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:18:32,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:18:32,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:18:32,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:18:32,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:18:32,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:18:32,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:18:32,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:18:32,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:18:32,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:18:32,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:18:32,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:18:32,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:18:32,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:18:32,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:18:32,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:18:32,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:18:32,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:18:32,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:18:32,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:18:32,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:18:32,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:18:32,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:18:32,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:18:32,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:18:32,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:18:32,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:18:32,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:18:32,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:18:32,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:18:32,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:18:32,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:18:32,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:18:32,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:18:32,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:18:32,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:18:32,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:18:32,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:18:32,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-22 02:18:32,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:18:32,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:18:32,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:18:32,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:18:32,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:18:32,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:18:32,226 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:18:32,226 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:18:32,227 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:18:32,227 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:18:32,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:18:32,228 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:18:32,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:18:32,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:18:32,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:18:32,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:18:32,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:18:32,230 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:18:32,231 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 02:18:32,231 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 02:18:32,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:18:32,231 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:18:32,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:18:32,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:18:32,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 02:18:32,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:18:32,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:18:32,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:18:32,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:18:32,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:18:32,234 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 02:18:32,234 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 02:18:32,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:18:32,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:18:32,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 02:18:32,235 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_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870393880f3eeabaf9027e474e4a742f6bf5934c1db12e4b3a2cd7e0ec435e2a [2022-11-22 02:18:32,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:18:32,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:18:32,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:18:32,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:18:32,669 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:18:32,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-22 02:18:36,029 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:18:36,254 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:18:36,255 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2022-11-22 02:18:36,266 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/data/204f3df9b/6ce7d4a2021b4d36bdceb268c7989f02/FLAG4565d834a [2022-11-22 02:18:36,286 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/data/204f3df9b/6ce7d4a2021b4d36bdceb268c7989f02 [2022-11-22 02:18:36,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:18:36,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:18:36,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:36,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:18:36,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:18:36,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4ba6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36, skipping insertion in model container [2022-11-22 02:18:36,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:18:36,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:18:36,485 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-22 02:18:36,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:36,556 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:18:36,570 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1117,1130] [2022-11-22 02:18:36,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:36,636 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:18:36,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36 WrapperNode [2022-11-22 02:18:36,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:36,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:36,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:18:36,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:18:36,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,688 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-11-22 02:18:36,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:36,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:18:36,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:18:36,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:18:36,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,738 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:18:36,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:18:36,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:18:36,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:18:36,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (1/1) ... [2022-11-22 02:18:36,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:18:36,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:36,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:18:36,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:18:36,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:18:36,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:18:36,936 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:18:36,938 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:18:37,131 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:18:37,139 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:18:37,140 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:18:37,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:37 BoogieIcfgContainer [2022-11-22 02:18:37,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:18:37,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:18:37,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:18:37,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:18:37,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:18:36" (1/3) ... [2022-11-22 02:18:37,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd6d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:37, skipping insertion in model container [2022-11-22 02:18:37,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:36" (2/3) ... [2022-11-22 02:18:37,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd6d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:37, skipping insertion in model container [2022-11-22 02:18:37,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:37" (3/3) ... [2022-11-22 02:18:37,152 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2022-11-22 02:18:37,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:18:37,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:18:37,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:18:37,261 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;@9cc90f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:18:37,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:18:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:18:37,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:37,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:18:37,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-22 02:18:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:18:37,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380193137] [2022-11-22 02:18:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:37,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:18:37,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:18:37,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:18:37,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-22 02:18:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:37,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 02:18:37,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:37,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:18:37,595 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:18:37,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380193137] [2022-11-22 02:18:37,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380193137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:37,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:37,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:18:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157284313] [2022-11-22 02:18:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:37,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:18:37,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:18:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:18:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:18:37,634 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:37,693 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-22 02:18:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:18:37,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:18:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:37,704 INFO L225 Difference]: With dead ends: 20 [2022-11-22 02:18:37,704 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 02:18:37,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:18:37,711 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:37,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:18:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 02:18:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-22 02:18:37,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:37,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 02:18:37,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 02:18:37,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:37,745 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 02:18:37,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 02:18:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:18:37,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:37,746 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:37,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:37,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:18:37,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:37,954 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-22 02:18:37,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:18:37,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744132381] [2022-11-22 02:18:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:37,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:18:37,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:18:37,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:18:37,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-22 02:18:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:38,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 02:18:38,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:38,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:38,806 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:18:38,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744132381] [2022-11-22 02:18:38,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744132381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:38,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1373975773] [2022-11-22 02:18:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:38,807 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:18:38,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:18:38,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:18:38,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-22 02:18:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:38,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 02:18:38,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:39,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:39,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1373975773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:39,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29051140] [2022-11-22 02:18:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:39,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:39,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:39,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:18:39,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:18:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:39,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-22 02:18:39,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:39,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:40,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29051140] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:40,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:18:40,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 17 [2022-11-22 02:18:40,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634498186] [2022-11-22 02:18:40,019 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:18:40,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:18:40,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:18:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:18:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:18:40,021 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:40,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:40,582 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-22 02:18:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:18:40,584 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 02:18:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:40,584 INFO L225 Difference]: With dead ends: 19 [2022-11-22 02:18:40,584 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 02:18:40,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:18:40,586 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:40,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 29 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:18:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 02:18:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-22 02:18:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-22 02:18:40,593 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-22 02:18:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:40,593 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-22 02:18:40,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-22 02:18:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:18:40,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:40,595 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-22 02:18:40,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-22 02:18:40,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:41,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:41,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:18:41,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:41,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-22 02:18:41,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:18:41,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174197262] [2022-11-22 02:18:41,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:18:41,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:18:41,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:18:41,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:18:41,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-22 02:18:41,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:18:41,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:18:41,307 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-22 02:18:41,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:42,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:46,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:18:46,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174197262] [2022-11-22 02:18:46,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174197262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:46,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1206682293] [2022-11-22 02:18:46,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:18:46,418 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:18:46,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:18:46,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:18:46,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-22 02:18:46,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:18:46,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:18:46,589 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-22 02:18:46,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:47,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:49,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1206682293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:49,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446769221] [2022-11-22 02:18:49,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:18:49,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:49,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:49,431 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:18:49,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:18:49,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:18:49,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:18:49,525 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-22 02:18:49,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:52,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:54,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446769221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:54,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:18:54,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7, 7, 8, 8] total 24 [2022-11-22 02:18:54,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255491042] [2022-11-22 02:18:54,542 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:18:54,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 02:18:54,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:18:54,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 02:18:54,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=406, Unknown=1, NotChecked=0, Total=552 [2022-11-22 02:18:54,545 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:55,298 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-22 02:18:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:18:55,303 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 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 14 [2022-11-22 02:18:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:55,304 INFO L225 Difference]: With dead ends: 22 [2022-11-22 02:18:55,304 INFO L226 Difference]: Without dead ends: 20 [2022-11-22 02:18:55,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=226, Invalid=585, Unknown=1, NotChecked=0, Total=812 [2022-11-22 02:18:55,306 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:55,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 53 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:18:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-22 02:18:55,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-22 02:18:55,315 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) [2022-11-22 02:18:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-22 02:18:55,316 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-22 02:18:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:55,317 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-22 02:18:55,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:55,318 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-22 02:18:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 02:18:55,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:55,319 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-22 02:18:55,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:55,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:55,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:55,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:55,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-22 02:18:55,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:18:55,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739250555] [2022-11-22 02:18:55,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:18:55,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:18:55,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:18:55,931 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:18:55,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-22 02:18:56,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 02:18:56,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:18:56,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-22 02:18:56,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:58,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:19:27,328 WARN L233 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 273 DAG size of output: 241 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:19:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:35,840 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:19:35,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739250555] [2022-11-22 02:19:35,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739250555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:19:35,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1268614505] [2022-11-22 02:19:35,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:19:35,842 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:19:35,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:19:35,843 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:19:35,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-22 02:19:36,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 02:19:36,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:19:36,090 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-22 02:19:36,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:19:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:37,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:19:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:55,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1268614505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:19:55,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084339064] [2022-11-22 02:19:55,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:19:55,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:19:55,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:19:55,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:19:55,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 02:19:55,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 02:19:55,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:19:55,947 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-22 02:19:55,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:19:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:57,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:20:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:20:16,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084339064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:20:16,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:20:16,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12, 12] total 22 [2022-11-22 02:20:16,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633871962] [2022-11-22 02:20:16,494 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:20:16,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-22 02:20:16,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:20:16,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-22 02:20:16,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=351, Unknown=1, NotChecked=0, Total=462 [2022-11-22 02:20:16,496 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:20:23,117 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 358 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:20:25,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:20:32,111 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 230 DAG size of output: 184 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:20:34,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:20:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:44,077 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-11-22 02:20:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 02:20:44,078 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 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 17 [2022-11-22 02:20:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:44,081 INFO L225 Difference]: With dead ends: 39 [2022-11-22 02:20:44,081 INFO L226 Difference]: Without dead ends: 37 [2022-11-22 02:20:44,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 18 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 58.5s TimeCoverageRelationStatistics Valid=266, Invalid=855, Unknown=1, NotChecked=0, Total=1122 [2022-11-22 02:20:44,085 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 92 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:44,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 38 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 93 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-22 02:20:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-22 02:20:44,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-22 02:20:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:20:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-11-22 02:20:44,107 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 17 [2022-11-22 02:20:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:44,108 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-11-22 02:20:44,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:20:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-11-22 02:20:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 02:20:44,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:44,109 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-11-22 02:20:44,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:20:44,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 02:20:44,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-22 02:20:44,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:20:44,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:20:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:44,723 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 4 times [2022-11-22 02:20:44,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:20:44,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152035264] [2022-11-22 02:20:44,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:20:44,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:20:44,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:20:44,725 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:20:44,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-22 02:20:44,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:20:44,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-22 02:20:44,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:20:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:20:45,008 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-22 02:20:45,008 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:20:45,009 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:20:45,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-22 02:20:45,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:20:45,228 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1] [2022-11-22 02:20:45,231 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:20:45,271 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,271 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,271 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,271 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,271 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,272 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,272 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:20:45 BoogieIcfgContainer [2022-11-22 02:20:45,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:20:45,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:20:45,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:20:45,290 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:20:45,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:37" (3/4) ... [2022-11-22 02:20:45,292 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-22 02:20:45,306 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,306 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,306 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,306 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,306 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,307 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,307 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:20:45,429 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:20:45,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:20:45,430 INFO L158 Benchmark]: Toolchain (without parser) took 129140.67ms. Allocated memory was 62.9MB in the beginning and 119.5MB in the end (delta: 56.6MB). Free memory was 33.9MB in the beginning and 90.6MB in the end (delta: -56.7MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2022-11-22 02:20:45,431 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 62.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:20:45,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.98ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 33.7MB in the beginning and 59.2MB in the end (delta: -25.5MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-22 02:20:45,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.18ms. Allocated memory is still 81.8MB. Free memory was 59.2MB in the beginning and 57.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:20:45,432 INFO L158 Benchmark]: Boogie Preprocessor took 55.37ms. Allocated memory is still 81.8MB. Free memory was 57.7MB in the beginning and 56.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:20:45,432 INFO L158 Benchmark]: RCFGBuilder took 395.09ms. Allocated memory is still 81.8MB. Free memory was 56.5MB in the beginning and 45.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 02:20:45,437 INFO L158 Benchmark]: TraceAbstraction took 128144.92ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 45.1MB in the beginning and 28.4MB in the end (delta: 16.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-22 02:20:45,437 INFO L158 Benchmark]: Witness Printer took 140.07ms. Allocated memory is still 119.5MB. Free memory was 28.4MB in the beginning and 90.6MB in the end (delta: -62.1MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-11-22 02:20:45,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 62.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.98ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 33.7MB in the beginning and 59.2MB in the end (delta: -25.5MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.18ms. Allocated memory is still 81.8MB. Free memory was 59.2MB in the beginning and 57.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.37ms. Allocated memory is still 81.8MB. Free memory was 57.7MB in the beginning and 56.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 395.09ms. Allocated memory is still 81.8MB. Free memory was 56.5MB in the beginning and 45.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 128144.92ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 45.1MB in the beginning and 28.4MB in the end (delta: 16.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Witness Printer took 140.07ms. Allocated memory is still 119.5MB. Free memory was 28.4MB in the beginning and 90.6MB in the end (delta: -62.1MB). Peak memory consumption was 4.9MB. 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 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 32); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L32] const SORT_2 var_4 = 0; [L33] const SORT_2 var_9 = 1; [L34] const SORT_2 var_16 = 3; [L36] SORT_1 input_3; [L38] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L39] SORT_2 state_6 = __VERIFIER_nondet_uint() & mask_SORT_2; [L41] SORT_2 init_7_arg_1 = var_4; [L42] state_5 = init_7_arg_1 [L43] SORT_2 init_8_arg_1 = var_4; [L44] state_6 = init_8_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=0, state_5=1, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=0, var_13_arg_0=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=0, state_5=2, state_6=0, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=0, var_13_arg_0=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=0, state_5=3, state_6=0, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=0, var_13_arg_0=1, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=1, state_5=3, state_6=1, var_10=4, var_10_arg_0=3, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=3, var_12_arg_0=1, var_12_arg_1=3, var_12_arg_2=4, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=2, state_5=3, state_6=2, var_10=4, var_10_arg_0=3, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=3, var_12_arg_0=1, var_12_arg_1=3, var_12_arg_2=4, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L62] RET __VERIFIER_assert(!(bad_20_arg_0)) [L64] SORT_2 var_10_arg_0 = state_5; [L65] SORT_2 var_10_arg_1 = var_9; [L66] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L67] SORT_1 var_12_arg_0 = input_3; [L68] SORT_2 var_12_arg_1 = state_5; [L69] SORT_2 var_12_arg_2 = var_10; [L70] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L71] var_12 = var_12 & mask_SORT_2 [L72] SORT_2 next_14_arg_1 = var_12; [L73] SORT_2 var_11_arg_0 = state_6; [L74] SORT_2 var_11_arg_1 = var_9; [L75] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L76] SORT_1 var_13_arg_0 = ~input_3; [L77] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L78] SORT_2 var_13_arg_1 = state_6; [L79] SORT_2 var_13_arg_2 = var_11; [L80] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L81] var_13 = var_13 & mask_SORT_2 [L82] SORT_2 next_15_arg_1 = var_13; [L84] state_5 = next_14_arg_1 [L85] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=1, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=4, var_10_arg_0=3, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=1, var_12_arg_1=3, var_12_arg_2=4, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=0, var_4=0, var_9=1] [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_2 var_17_arg_0 = state_5; [L52] SORT_2 var_17_arg_1 = var_16; [L53] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L54] SORT_2 var_18_arg_0 = state_6; [L55] SORT_2 var_18_arg_1 = var_16; [L56] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L57] SORT_1 var_19_arg_0 = var_17; [L58] SORT_1 var_19_arg_1 = var_18; [L59] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L60] var_19 = var_19 & mask_SORT_1 [L61] SORT_1 bad_20_arg_0 = var_19; [L62] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 128.0s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 116 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 197 IncrementalHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 17 mSDtfsCounter, 197 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 137 SyntacticMatches, 24 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 66.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 95.0s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 220 ConstructedInterpolants, 74 QuantifiedInterpolants, 24087 SizeOfPredicates, 559 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 578 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/258 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 proved your program to be incorrect! [2022-11-22 02:20:45,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52ddcd13-c112-4d51-8a3f-d09ca7c6284b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE