./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/sll2n_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bae9bfc842bb010963d083e19e9498cfd3af182f91f0b8fa56907786a4d462dd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:12:01,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:12:01,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:12:01,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:12:01,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:12:01,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:12:01,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:12:01,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:12:01,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:12:01,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:12:01,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:12:01,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:12:01,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:12:01,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:12:01,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:12:01,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:12:01,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:12:01,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:12:01,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:12:01,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:12:01,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:12:01,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:12:01,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:12:01,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:12:01,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:12:01,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:12:01,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:12:01,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:12:01,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:12:01,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:12:01,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:12:01,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:12:01,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:12:01,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:12:01,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:12:01,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:12:01,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:12:01,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:12:01,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:12:01,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:12:01,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:12:01,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 14:12:01,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:12:01,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:12:01,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:12:01,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:12:01,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:12:01,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:12:01,434 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:12:01,434 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:12:01,434 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:12:01,434 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:12:01,434 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:12:01,434 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:12:01,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:12:01,434 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:12:01,434 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:12:01,435 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:12:01,435 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:12:01,435 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:12:01,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:12:01,435 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:12:01,435 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:12:01,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:12:01,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:12:01,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:12:01,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:12:01,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:12:01,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:12:01,437 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:12:01,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:12:01,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:12:01,442 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:12:01,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:12:01,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:12:01,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:12:01,443 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_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bae9bfc842bb010963d083e19e9498cfd3af182f91f0b8fa56907786a4d462dd [2022-12-14 14:12:01,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:12:01,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:12:01,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:12:01,643 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:12:01,643 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:12:01,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/sll2n_remove_all.i [2022-12-14 14:12:04,238 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:12:04,424 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:12:04,424 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2022-12-14 14:12:04,433 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/data/9cafbe70a/a8d54597baea4b21bdafae684990b6bd/FLAGc65a518f7 [2022-12-14 14:12:04,821 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/data/9cafbe70a/a8d54597baea4b21bdafae684990b6bd [2022-12-14 14:12:04,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:12:04,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:12:04,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:12:04,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:12:04,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:12:04,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:12:04" (1/1) ... [2022-12-14 14:12:04,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94d6afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:04, skipping insertion in model container [2022-12-14 14:12:04,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:12:04" (1/1) ... [2022-12-14 14:12:04,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:12:04,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:12:05,113 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_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/sv-benchmarks/c/list-simple/sll2n_remove_all.i[23806,23819] [2022-12-14 14:12:05,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:12:05,120 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:12:05,153 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_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/sv-benchmarks/c/list-simple/sll2n_remove_all.i[23806,23819] [2022-12-14 14:12:05,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:12:05,172 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:12:05,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05 WrapperNode [2022-12-14 14:12:05,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:12:05,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:12:05,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:12:05,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:12:05,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,208 INFO L138 Inliner]: procedures = 126, calls = 25, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 89 [2022-12-14 14:12:05,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:12:05,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:12:05,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:12:05,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:12:05,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,230 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:12:05,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:12:05,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:12:05,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:12:05,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:12:05,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:05,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:12:05,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:12:05,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:12:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:12:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:12:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:12:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:12:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:12:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:12:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 14:12:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:12:05,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:12:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:12:05,381 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:12:05,383 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:12:05,517 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:12:05,563 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:12:05,563 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 14:12:05,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:12:05 BoogieIcfgContainer [2022-12-14 14:12:05,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:12:05,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:12:05,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:12:05,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:12:05,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:12:04" (1/3) ... [2022-12-14 14:12:05,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3be26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:12:05, skipping insertion in model container [2022-12-14 14:12:05,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (2/3) ... [2022-12-14 14:12:05,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3be26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:12:05, skipping insertion in model container [2022-12-14 14:12:05,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:12:05" (3/3) ... [2022-12-14 14:12:05,571 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2022-12-14 14:12:05,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:12:05,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 14:12:05,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:12:05,620 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;@729bad9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:12:05,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 14:12:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:12:05,627 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:05,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:12:05,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 14:12:05,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash 99605, now seen corresponding path program 1 times [2022-12-14 14:12:05,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:05,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109080603] [2022-12-14 14:12:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:05,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:05,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:05,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109080603] [2022-12-14 14:12:05,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109080603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:05,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:12:05,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:12:05,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498789562] [2022-12-14 14:12:05,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:05,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:12:05,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:12:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:12:05,874 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 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 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:05,917 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-12-14 14:12:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:12:05,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 14:12:05,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:05,924 INFO L225 Difference]: With dead ends: 35 [2022-12-14 14:12:05,924 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 14:12:05,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:12:05,929 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:05,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 27 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:12:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 14:12:05,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2022-12-14 14:12:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 16 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) [2022-12-14 14:12:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-12-14 14:12:05,951 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 3 [2022-12-14 14:12:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:05,951 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-12-14 14:12:05,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-12-14 14:12:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:12:05,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:05,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:12:05,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:12:05,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 14:12:05,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:05,953 INFO L85 PathProgramCache]: Analyzing trace with hash 3020787, now seen corresponding path program 1 times [2022-12-14 14:12:05,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:05,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285192941] [2022-12-14 14:12:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:05,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:06,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:06,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285192941] [2022-12-14 14:12:06,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285192941] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:06,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:12:06,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:12:06,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865001215] [2022-12-14 14:12:06,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:06,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:12:06,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:06,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:12:06,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:12:06,062 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) 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) [2022-12-14 14:12:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:06,102 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-12-14 14:12:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:12:06,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 [2022-12-14 14:12:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:06,103 INFO L225 Difference]: With dead ends: 22 [2022-12-14 14:12:06,104 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 14:12:06,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:12:06,105 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:06,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:12:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 14:12:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-14 14:12:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:06,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-12-14 14:12:06,108 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 4 [2022-12-14 14:12:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:06,109 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-12-14 14:12:06,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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) [2022-12-14 14:12:06,109 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-12-14 14:12:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:12:06,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:06,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:06,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:12:06,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 14:12:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash -201990378, now seen corresponding path program 1 times [2022-12-14 14:12:06,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:06,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911234273] [2022-12-14 14:12:06,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:06,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:06,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:06,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911234273] [2022-12-14 14:12:06,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911234273] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:12:06,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376977089] [2022-12-14 14:12:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:06,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:06,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:06,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:06,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:12:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:06,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:12:06,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:12:06,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:12:06,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376977089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:06,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:12:06,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-14 14:12:06,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265774789] [2022-12-14 14:12:06,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:06,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:12:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:12:06,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:12:06,316 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:06,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:06,330 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-12-14 14:12:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:12:06,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-12-14 14:12:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:06,331 INFO L225 Difference]: With dead ends: 20 [2022-12-14 14:12:06,331 INFO L226 Difference]: Without dead ends: 19 [2022-12-14 14:12:06,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:12:06,332 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:06,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:12:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-14 14:12:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-14 14:12:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-12-14 14:12:06,335 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 7 [2022-12-14 14:12:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:06,335 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-12-14 14:12:06,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-12-14 14:12:06,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:12:06,336 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:06,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:06,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:12:06,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:06,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 14:12:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1966734356, now seen corresponding path program 1 times [2022-12-14 14:12:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:06,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094553073] [2022-12-14 14:12:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:06,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:06,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:06,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094553073] [2022-12-14 14:12:06,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094553073] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:12:06,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614537826] [2022-12-14 14:12:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:06,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:06,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:06,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:06,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:12:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:06,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:12:06,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:12:06,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:12:06,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614537826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:06,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:12:06,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-14 14:12:06,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184273659] [2022-12-14 14:12:06,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:06,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:12:06,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:12:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:12:06,818 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:06,832 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 14:12:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:12:06,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Word has length 8 [2022-12-14 14:12:06,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:06,833 INFO L225 Difference]: With dead ends: 19 [2022-12-14 14:12:06,833 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 14:12:06,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:12:06,834 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:06,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:12:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 14:12:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 14:12:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-12-14 14:12:06,838 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2022-12-14 14:12:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:06,838 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-12-14 14:12:06,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-12-14 14:12:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:12:06,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:06,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-12-14 14:12:06,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:12:07,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:07,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 14:12:07,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:07,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1966801390, now seen corresponding path program 1 times [2022-12-14 14:12:07,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:07,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518763167] [2022-12-14 14:12:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:07,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:12:07,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:07,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518763167] [2022-12-14 14:12:07,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518763167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:07,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:12:07,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:12:07,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828855747] [2022-12-14 14:12:07,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:07,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:12:07,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:07,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:12:07,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:12:07,190 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:07,218 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-12-14 14:12:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:12:07,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) Word has length 8 [2022-12-14 14:12:07,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:07,219 INFO L225 Difference]: With dead ends: 18 [2022-12-14 14:12:07,219 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 14:12:07,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:12:07,221 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:07,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:12:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 14:12:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 14:12:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 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) [2022-12-14 14:12:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-12-14 14:12:07,225 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2022-12-14 14:12:07,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:07,225 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-12-14 14:12:07,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:07,226 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-12-14 14:12:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:12:07,226 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:07,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2022-12-14 14:12:07,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:12:07,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 14:12:07,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:07,227 INFO L85 PathProgramCache]: Analyzing trace with hash -841300890, now seen corresponding path program 1 times [2022-12-14 14:12:07,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:07,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400776090] [2022-12-14 14:12:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:07,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:07,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:07,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400776090] [2022-12-14 14:12:07,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400776090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:12:07,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064903556] [2022-12-14 14:12:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:07,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:07,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:07,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:07,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:12:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:07,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 14:12:07,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:07,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:12:07,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064903556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:07,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:12:07,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 14:12:07,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204687969] [2022-12-14 14:12:07,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:07,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:12:07,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:12:07,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:12:07,443 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:07,487 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-12-14 14:12:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:12:07,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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) Word has length 9 [2022-12-14 14:12:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:07,488 INFO L225 Difference]: With dead ends: 17 [2022-12-14 14:12:07,488 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 14:12:07,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 14:12:07,490 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:07,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 18 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:12:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 14:12:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2022-12-14 14:12:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-12-14 14:12:07,493 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2022-12-14 14:12:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:07,493 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-12-14 14:12:07,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-12-14 14:12:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 14:12:07,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:07,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:07,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:12:07,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 14:12:07,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 14:12:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash -246102541, now seen corresponding path program 1 times [2022-12-14 14:12:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:07,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650141206] [2022-12-14 14:12:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:07,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:07,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:07,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650141206] [2022-12-14 14:12:07,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650141206] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:12:07,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085942946] [2022-12-14 14:12:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:07,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:07,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:07,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:07,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:12:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:07,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 14:12:07,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:07,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:12:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:07,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085942946] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:12:07,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1952668128] [2022-12-14 14:12:07,979 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 14:12:07,979 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:12:07,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:12:07,986 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:12:07,986 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:12:08,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,064 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:12:08,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:12:08,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 14:12:08,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,149 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 14:12:08,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 14:12:08,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 14:12:08,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 14:12:08,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:08,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:12:08,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:08,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2022-12-14 14:12:08,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:08,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2022-12-14 14:12:08,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,381 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 14:12:08,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-12-14 14:12:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-12-14 14:12:08,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:08,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 38 [2022-12-14 14:12:08,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:08,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-12-14 14:12:08,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:08,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2022-12-14 14:12:08,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:08,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2022-12-14 14:12:09,050 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-12-14 14:12:09,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 463 [2022-12-14 14:12:09,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:09,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:09,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:09,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-12-14 14:12:09,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:09,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:09,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:09,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 44 [2022-12-14 14:12:09,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:09,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:09,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-12-14 14:12:09,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:09,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2022-12-14 14:12:09,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:09,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2022-12-14 14:12:09,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:12:09,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:09,563 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:12:09,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 49 [2022-12-14 14:12:09,584 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 14:12:09,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2022-12-14 14:12:09,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:12:09,744 INFO L321 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2022-12-14 14:12:09,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 449 treesize of output 455 [2022-12-14 14:12:09,836 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-12-14 14:12:09,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 463 [2022-12-14 14:12:10,117 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:12:11,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1952668128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:11,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:12:11,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 12 [2022-12-14 14:12:11,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047316689] [2022-12-14 14:12:11,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:11,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:12:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:11,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:12:11,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:12:11,179 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:11,574 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-12-14 14:12:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:12:11,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 10 [2022-12-14 14:12:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:11,575 INFO L225 Difference]: With dead ends: 18 [2022-12-14 14:12:11,575 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 14:12:11,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-12-14 14:12:11,576 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:11,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:12:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 14:12:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 14:12:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-12-14 14:12:11,581 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2022-12-14 14:12:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:11,581 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-12-14 14:12:11,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-12-14 14:12:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 14:12:11,581 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:11,582 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:11,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:12:11,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 14:12:11,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 14:12:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:11,784 INFO L85 PathProgramCache]: Analyzing trace with hash -131542522, now seen corresponding path program 1 times [2022-12-14 14:12:11,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:11,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235222137] [2022-12-14 14:12:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:11,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:12:11,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:11,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235222137] [2022-12-14 14:12:11,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235222137] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:12:11,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238785142] [2022-12-14 14:12:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:11,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:11,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:11,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:11,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:12:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:11,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 14:12:11,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:12:11,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:12:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:12:11,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238785142] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:12:11,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2120003556] [2022-12-14 14:12:11,980 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 14:12:11,980 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:12:11,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:12:11,980 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:12:11,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:12:11,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,002 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:12:12,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 14:12:12,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,022 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:12:12,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:12:12,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,058 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 14:12:12,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 14:12:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,088 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 14:12:12,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 14:12:12,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 14:12:12,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:12,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:12:12,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:12,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2022-12-14 14:12:12,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:12,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2022-12-14 14:12:12,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,233 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-12-14 14:12:12,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 46 [2022-12-14 14:12:12,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,282 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 14:12:12,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-12-14 14:12:12,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:12,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 38 [2022-12-14 14:12:12,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:12,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-12-14 14:12:12,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:12,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2022-12-14 14:12:12,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:12,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2022-12-14 14:12:12,757 INFO L321 Elim1Store]: treesize reduction 248, result has 15.1 percent of original size [2022-12-14 14:12:12,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 471 [2022-12-14 14:12:12,805 INFO L321 Elim1Store]: treesize reduction 142, result has 10.7 percent of original size [2022-12-14 14:12:12,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 449 treesize of output 455 [2022-12-14 14:12:13,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:13,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,209 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-14 14:12:13,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 463 treesize of output 401 [2022-12-14 14:12:13,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:13,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:13,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,241 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-14 14:12:13,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 462 treesize of output 427 [2022-12-14 14:12:13,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,283 INFO L321 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2022-12-14 14:12:13,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 465 treesize of output 404 [2022-12-14 14:12:13,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:13,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,326 INFO L321 Elim1Store]: treesize reduction 86, result has 19.6 percent of original size [2022-12-14 14:12:13,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 490 treesize of output 446 [2022-12-14 14:12:13,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:13,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,370 INFO L321 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-12-14 14:12:13,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 475 treesize of output 464 [2022-12-14 14:12:13,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:12:13,400 INFO L321 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2022-12-14 14:12:13,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 477 treesize of output 467 [2022-12-14 14:12:13,686 INFO L321 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-12-14 14:12:13,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 43 [2022-12-14 14:12:13,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:13,696 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:12:13,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 41 [2022-12-14 14:12:13,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:12:13,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:12:13,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:12:13,776 INFO L321 Elim1Store]: treesize reduction 42, result has 43.2 percent of original size [2022-12-14 14:12:13,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 64 [2022-12-14 14:12:13,803 INFO L321 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2022-12-14 14:12:13,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2022-12-14 14:12:13,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:12:13,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:12:13,973 INFO L321 Elim1Store]: treesize reduction 42, result has 43.2 percent of original size [2022-12-14 14:12:13,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 64 [2022-12-14 14:12:14,001 INFO L321 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2022-12-14 14:12:14,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 64 [2022-12-14 14:12:14,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:12:14,286 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-12-14 14:12:14,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 463 [2022-12-14 14:12:14,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:14,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:14,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:12:14,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-12-14 14:12:14,385 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:12:16,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2120003556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:16,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:12:16,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 12 [2022-12-14 14:12:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311496614] [2022-12-14 14:12:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:16,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:12:16,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:16,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:12:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:12:16,124 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:16,272 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-12-14 14:12:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 14:12:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 14:12:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:16,272 INFO L225 Difference]: With dead ends: 16 [2022-12-14 14:12:16,272 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 14:12:16,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-12-14 14:12:16,273 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:16,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:12:16,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 14:12:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 14:12:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 14:12:16,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-12-14 14:12:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:16,275 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 14:12:16,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:12:16,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 14:12:16,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 14:12:16,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-12-14 14:12:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-12-14 14:12:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-12-14 14:12:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-12-14 14:12:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-12-14 14:12:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-12-14 14:12:16,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:12:16,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 14:12:16,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 14:12:16,971 INFO L895 garLoopResultBuilder]: At program point L576(lines 576 578) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_sll_create_~len#1|) (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (< |#StackHeapBarrier| |ULTIMATE.start_main_~#s~0#1.base|)) (.cse1 (= |ULTIMATE.start_node_create_~data#1| |ULTIMATE.start_node_create_#in~data#1|)) (.cse2 (= (select |#valid| |ULTIMATE.start_node_create_~temp~0#1.base|) 1)) (.cse3 (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1)) (.cse4 (= 8 (select |#length| |ULTIMATE.start_node_create_~temp~0#1.base|))) (.cse5 (= 2 (select |#length| 1))) (.cse7 (= (select |#valid| 1) 1)) (.cse8 (= 19 (select |#length| 2))) (.cse9 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse10 (= (select |#valid| 0) 0)) (.cse11 (= (select |#valid| 2) 1)) (.cse12 (< |ULTIMATE.start_node_create_~temp~0#1.base| |#StackHeapBarrier|)) (.cse13 (= |ULTIMATE.start_sll_create_~data#1| |ULTIMATE.start_sll_create_#in~data#1|)) (.cse14 (= (select .cse20 0) 48)) (.cse15 (= |ULTIMATE.start_sll_create_~data#1| |ULTIMATE.start_node_create_#in~data#1|)) (.cse16 (= (select |#length| |ULTIMATE.start_main_~#s~0#1.base|) 4)) (.cse17 (= (select .cse20 1) 0)) (.cse18 (= |ULTIMATE.start_main_~data~0#1| |ULTIMATE.start_sll_create_#in~data#1|)) (.cse19 (< 0 |#StackHeapBarrier|))) (or (let ((.cse6 (+ 4 |ULTIMATE.start_sll_create_~new_head~0#1.offset|))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_sll_create_~data#1| (select (select |#memory_int| |ULTIMATE.start_sll_create_~new_head~0#1.base|) 0)) .cse5 (not (= |ULTIMATE.start_node_create_~temp~0#1.base| |ULTIMATE.start_sll_create_~new_head~0#1.base|)) (= |ULTIMATE.start_sll_create_~head~0#1.base| |ULTIMATE.start_sll_create_~new_head~0#1.base|) (= (select |#length| |ULTIMATE.start_sll_create_~new_head~0#1.base|) 8) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_~new_head~0#1.base|) .cse6) 0) (= |ULTIMATE.start_sll_create_~head~0#1.offset| |ULTIMATE.start_sll_create_~new_head~0#1.offset|) .cse7 .cse8 .cse9 (<= |ULTIMATE.start_sll_create_~len#1| 1) .cse10 (= |ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) .cse11 .cse12 .cse13 .cse14 .cse15 (= (select |#valid| |ULTIMATE.start_sll_create_~new_head~0#1.base|) 1) .cse16 .cse17 (< |ULTIMATE.start_sll_create_~new_head~0#1.base| |#StackHeapBarrier|) .cse18 .cse19 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_~new_head~0#1.base|) .cse6) 0))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_sll_create_~len#1| |ULTIMATE.start_sll_create_#in~len#1|) .cse5 (= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_sll_create_~head~0#1.base| 0) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0)) [2022-12-14 14:12:16,971 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 602) no Hoare annotation was computed. [2022-12-14 14:12:16,971 INFO L902 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2022-12-14 14:12:16,971 INFO L899 garLoopResultBuilder]: For program point L585-3(line 585) no Hoare annotation was computed. [2022-12-14 14:12:16,971 INFO L899 garLoopResultBuilder]: For program point L585-4(line 585) no Hoare annotation was computed. [2022-12-14 14:12:16,971 INFO L895 garLoopResultBuilder]: At program point L585-5(lines 585 589) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_sll_create_#in~data#1|)) (.cse1 (<= |ULTIMATE.start_sll_create_#in~data#1| 1)) (.cse2 (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0)) (.cse3 (<= 1 |ULTIMATE.start_sll_create_~data#1|)) (.cse4 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse5 (<= |ULTIMATE.start_sll_create_~data#1| 1)) (.cse6 (<= |ULTIMATE.start_sll_create_#in~len#1| 2)) (.cse7 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse8 (<= |ULTIMATE.start_main_~#s~0#1.offset| 0)) (.cse9 (<= 0 |ULTIMATE.start_main_~#s~0#1.base|)) (.cse10 (<= 0 |#StackHeapBarrier|)) (.cse11 (<= 2 |ULTIMATE.start_sll_create_#in~len#1|)) (.cse12 (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse13 (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse14 (= |#NULL.base| 0))) (or (and (= 2 |ULTIMATE.start_sll_create_~len#1|) .cse0 .cse1 .cse2 (<= |#NULL.offset| 0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (<= 0 |#NULL.offset|) .cse10 .cse11 .cse12 .cse13 .cse14) (and (<= 1 |ULTIMATE.start_node_create_~data#1|) .cse0 .cse1 .cse2 .cse3 (<= 1 |ULTIMATE.start_node_create_#in~data#1|) .cse4 (<= |ULTIMATE.start_node_create_#in~data#1| 1) .cse5 (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_sll_create_~len#1| 1) .cse6 (<= 0 |ULTIMATE.start_sll_create_~len#1|) .cse7 .cse8 (= |#NULL.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) .cse9 (<= |ULTIMATE.start_node_create_~data#1| 1) .cse10 .cse11 .cse12 .cse13 .cse14))) [2022-12-14 14:12:16,971 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2022-12-14 14:12:16,971 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 602) no Hoare annotation was computed. [2022-12-14 14:12:16,971 INFO L899 garLoopResultBuilder]: For program point L602(line 602) no Hoare annotation was computed. [2022-12-14 14:12:16,971 INFO L899 garLoopResultBuilder]: For program point L602-1(line 602) no Hoare annotation was computed. [2022-12-14 14:12:16,972 INFO L899 garLoopResultBuilder]: For program point L602-5(line 602) no Hoare annotation was computed. [2022-12-14 14:12:16,972 INFO L899 garLoopResultBuilder]: For program point L602-6(line 602) no Hoare annotation was computed. [2022-12-14 14:12:16,972 INFO L895 garLoopResultBuilder]: At program point L602-7(lines 602 604) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_node_create_~data#1|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 1 |ULTIMATE.start_node_create_#in~data#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_node_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= 0 |ULTIMATE.start_node_create_~temp~0#1.offset|) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= |ULTIMATE.start_node_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0)) [2022-12-14 14:12:16,972 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2022-12-14 14:12:16,972 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 14:12:16,972 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 602) no Hoare annotation was computed. [2022-12-14 14:12:16,972 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 14:12:16,972 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 602) no Hoare annotation was computed. [2022-12-14 14:12:16,974 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:16,975 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:12:16,986 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 14:12:16,987 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 14:12:16,988 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 14:12:16,988 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 14:12:16,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:12:16 BoogieIcfgContainer [2022-12-14 14:12:16,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:12:16,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:12:16,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:12:16,991 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:12:16,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:12:05" (3/4) ... [2022-12-14 14:12:16,993 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 14:12:17,000 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-14 14:12:17,000 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-14 14:12:17,000 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 14:12:17,000 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 14:12:17,015 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((2 == len && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && #NULL <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && s <= 0) && 0 <= s) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0) || (((((((((((((((((((((((1 <= data && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && 1 <= \old(data)) && data == 1) && \old(data) <= 1) && data <= 1) && 0 <= temp) && len <= 1) && \old(len) <= 2) && 0 <= len) && len == 2) && s <= 0) && #NULL == 0) && temp <= 0) && 0 <= s) && data <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0) [2022-12-14 14:12:17,015 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((1 <= len && ((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < s && data == \old(data)) && \valid[temp] == 1) && \valid[s] == 1) && 8 == unknown-#length-unknown[temp]) && data == unknown-#memory_int-unknown[new_head][0]) && 2 == unknown-#length-unknown[1]) && !(temp == new_head)) && head == new_head) && unknown-#length-unknown[new_head] == 8) && #memory_$Pointer$[new_head][4 + new_head] == 0) && head == new_head) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && data == 1) && len <= 1) && \valid[0] == 0) && new_head == 0) && \valid[2] == 1) && temp < unknown-#StackHeapBarrier-unknown) && data == \old(data)) && unknown-#memory_int-unknown[1][0] == 48) && data == \old(data)) && \valid[new_head] == 1) && unknown-#length-unknown[s] == 4) && unknown-#memory_int-unknown[1][1] == 0) && new_head < unknown-#StackHeapBarrier-unknown) && data == \old(data)) && 0 < unknown-#StackHeapBarrier-unknown) && #memory_$Pointer$[new_head][4 + new_head] == 0) || (((((((((((((((((((((unknown-#StackHeapBarrier-unknown < s && data == \old(data)) && \valid[temp] == 1) && \valid[s] == 1) && 8 == unknown-#length-unknown[temp]) && len == \old(len)) && 2 == unknown-#length-unknown[1]) && head == 0) && head == 0) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && data == 1) && \valid[0] == 0) && \valid[2] == 1) && temp < unknown-#StackHeapBarrier-unknown) && data == \old(data)) && unknown-#memory_int-unknown[1][0] == 48) && data == \old(data)) && unknown-#length-unknown[s] == 4) && unknown-#memory_int-unknown[1][1] == 0) && data == \old(data)) && 0 < unknown-#StackHeapBarrier-unknown))) && 0 <= temp) && \old(len) <= 2) && len == 2) && s <= 0) && #NULL == 0) && temp <= 0) && 2 <= \old(len)) && 0 <= s) && #NULL == 0 [2022-12-14 14:12:17,015 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((1 <= data && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && len <= 0) && \result <= 0) && 1 <= data) && 1 <= \old(data)) && data == 1) && \old(data) <= 1) && data <= 1) && 0 <= temp) && \old(len) <= 2) && 0 <= len) && len == 2) && s <= 0) && #NULL == 0) && temp <= 0) && 0 <= s) && 0 <= \result) && i <= 1) && data <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0 [2022-12-14 14:12:17,022 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:12:17,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:12:17,022 INFO L158 Benchmark]: Toolchain (without parser) took 12194.36ms. Allocated memory was 138.4MB in the beginning and 243.3MB in the end (delta: 104.9MB). Free memory was 80.9MB in the beginning and 191.3MB in the end (delta: -110.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:12:17,022 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:12:17,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.37ms. Allocated memory is still 138.4MB. Free memory was 80.8MB in the beginning and 103.8MB in the end (delta: -23.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-12-14 14:12:17,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.22ms. Allocated memory is still 138.4MB. Free memory was 103.8MB in the beginning and 101.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:12:17,023 INFO L158 Benchmark]: Boogie Preprocessor took 24.34ms. Allocated memory is still 138.4MB. Free memory was 101.9MB in the beginning and 100.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:12:17,023 INFO L158 Benchmark]: RCFGBuilder took 330.77ms. Allocated memory is still 138.4MB. Free memory was 100.3MB in the beginning and 83.0MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 14:12:17,023 INFO L158 Benchmark]: TraceAbstraction took 11424.53ms. Allocated memory was 138.4MB in the beginning and 243.3MB in the end (delta: 104.9MB). Free memory was 82.4MB in the beginning and 194.5MB in the end (delta: -112.1MB). Peak memory consumption was 119.7MB. Max. memory is 16.1GB. [2022-12-14 14:12:17,023 INFO L158 Benchmark]: Witness Printer took 30.95ms. Allocated memory is still 243.3MB. Free memory was 194.5MB in the beginning and 191.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:12:17,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.37ms. Allocated memory is still 138.4MB. Free memory was 80.8MB in the beginning and 103.8MB in the end (delta: -23.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.22ms. Allocated memory is still 138.4MB. Free memory was 103.8MB in the beginning and 101.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.34ms. Allocated memory is still 138.4MB. Free memory was 101.9MB in the beginning and 100.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.77ms. Allocated memory is still 138.4MB. Free memory was 100.3MB in the beginning and 83.0MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 11424.53ms. Allocated memory was 138.4MB in the beginning and 243.3MB in the end (delta: 104.9MB). Free memory was 82.4MB in the beginning and 194.5MB in the end (delta: -112.1MB). Peak memory consumption was 119.7MB. Max. memory is 16.1GB. * Witness Printer took 30.95ms. Allocated memory is still 243.3MB. Free memory was 194.5MB in the beginning and 191.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * 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 - PositiveResult [Line: 585]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 585]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 602]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 602]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 602]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 602]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 11.4s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 196 IncrementalHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 56 mSDtfsCounter, 196 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 11 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 40, 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, 8 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 475 HoareAnnotationTreeSize, 4 FomulaSimplifications, 69 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 210 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 267 SizeOfPredicates, 10 NumberOfNonLiveVariables, 806 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 15/27 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: OVERALL_TIME: 4.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 20, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 45, TOOLS_POST_TIME: 4.3s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 45, TOOLS_QUANTIFIERELIM_TIME: 4.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.5s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 83, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 3, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 20, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME: 2.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 248, DAG_COMPRESSION_RETAINED_NODES: 69, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (((((((((((((((((2 == len && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && #NULL <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && s <= 0) && 0 <= s) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0) || (((((((((((((((((((((((1 <= data && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && 1 <= \old(data)) && data == 1) && \old(data) <= 1) && data <= 1) && 0 <= temp) && len <= 1) && \old(len) <= 2) && 0 <= len) && len == 2) && s <= 0) && #NULL == 0) && temp <= 0) && 0 <= s) && data <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0) - InvariantResult [Line: 576]: Loop Invariant [2022-12-14 14:12:17,030 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 14:12:17,030 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 14:12:17,031 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 14:12:17,031 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (((((((((1 <= len && ((((((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < s && data == \old(data)) && \valid[temp] == 1) && \valid[s] == 1) && 8 == unknown-#length-unknown[temp]) && data == unknown-#memory_int-unknown[new_head][0]) && 2 == unknown-#length-unknown[1]) && !(temp == new_head)) && head == new_head) && unknown-#length-unknown[new_head] == 8) && #memory_$Pointer$[new_head][4 + new_head] == 0) && head == new_head) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && data == 1) && len <= 1) && \valid[0] == 0) && new_head == 0) && \valid[2] == 1) && temp < unknown-#StackHeapBarrier-unknown) && data == \old(data)) && unknown-#memory_int-unknown[1][0] == 48) && data == \old(data)) && \valid[new_head] == 1) && unknown-#length-unknown[s] == 4) && unknown-#memory_int-unknown[1][1] == 0) && new_head < unknown-#StackHeapBarrier-unknown) && data == \old(data)) && 0 < unknown-#StackHeapBarrier-unknown) && #memory_$Pointer$[new_head][4 + new_head] == 0) || (((((((((((((((((((((unknown-#StackHeapBarrier-unknown < s && data == \old(data)) && \valid[temp] == 1) && \valid[s] == 1) && 8 == unknown-#length-unknown[temp]) && len == \old(len)) && 2 == unknown-#length-unknown[1]) && head == 0) && head == 0) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && data == 1) && \valid[0] == 0) && \valid[2] == 1) && temp < unknown-#StackHeapBarrier-unknown) && data == \old(data)) && unknown-#memory_int-unknown[1][0] == 48) && data == \old(data)) && unknown-#length-unknown[s] == 4) && unknown-#memory_int-unknown[1][1] == 0) && data == \old(data)) && 0 < unknown-#StackHeapBarrier-unknown))) && 0 <= temp) && \old(len) <= 2) && len == 2) && s <= 0) && #NULL == 0) && temp <= 0) && 2 <= \old(len)) && 0 <= s) && #NULL == 0 - InvariantResult [Line: 572]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 602]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((1 <= data && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && len <= 0) && \result <= 0) && 1 <= data) && 1 <= \old(data)) && data == 1) && \old(data) <= 1) && data <= 1) && 0 <= temp) && \old(len) <= 2) && 0 <= len) && len == 2) && s <= 0) && #NULL == 0) && temp <= 0) && 0 <= s) && 0 <= \result) && i <= 1) && data <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-12-14 14:12:17,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ebbfb96-f15b-4a92-9faa-df36ca1d451d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE