./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test25-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/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_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04738ccb45e87cb71ee901a776c43e93b7c292454abcb1b1134d9ecc09485bab --- 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 05:50:05,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:50:05,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:50:05,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:50:05,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:50:05,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:50:05,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:50:05,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:50:05,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:50:05,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:50:05,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:50:05,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:50:05,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:50:05,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:50:05,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:50:05,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:50:05,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:50:05,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:50:05,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:50:05,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:50:05,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:50:05,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:50:05,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:50:05,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:50:05,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:50:05,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:50:05,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:50:05,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:50:05,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:50:05,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:50:05,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:50:05,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:50:05,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:50:05,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:50:05,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:50:05,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:50:05,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:50:05,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:50:05,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:50:05,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:50:05,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:50:05,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:50:05,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:50:05,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:50:05,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:50:05,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:50:05,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:50:05,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:50:05,476 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:50:05,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:50:05,476 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:50:05,476 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:50:05,476 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:50:05,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:50:05,477 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:50:05,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:50:05,477 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:50:05,477 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:50:05,477 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:50:05,477 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:50:05,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:50:05,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:50:05,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:50:05,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:50:05,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:50:05,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:50:05,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:50:05,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:50:05,478 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:50:05,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:50:05,479 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:50:05,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:50:05,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:50:05,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:50:05,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:50:05,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:50:05,479 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:50:05,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:50:05,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:50:05,479 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:50:05,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:50:05,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:50:05,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:50:05,480 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_41f1d347-d590-48e8-9564-e95e66c4373d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04738ccb45e87cb71ee901a776c43e93b7c292454abcb1b1134d9ecc09485bab [2022-12-14 05:50:05,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:50:05,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:50:05,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:50:05,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:50:05,688 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:50:05,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-regression/test25-2.c [2022-12-14 05:50:08,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:50:08,417 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:50:08,418 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/sv-benchmarks/c/ldv-regression/test25-2.c [2022-12-14 05:50:08,422 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/data/996929252/3adf880d556443d4970bce5ba16a330e/FLAGda95a471c [2022-12-14 05:50:08,433 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/data/996929252/3adf880d556443d4970bce5ba16a330e [2022-12-14 05:50:08,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:50:08,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:50:08,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:50:08,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:50:08,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:50:08,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dfbe366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08, skipping insertion in model container [2022-12-14 05:50:08,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:50:08,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:50:08,582 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_41f1d347-d590-48e8-9564-e95e66c4373d/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2022-12-14 05:50:08,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:50:08,593 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:50:08,608 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_41f1d347-d590-48e8-9564-e95e66c4373d/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2022-12-14 05:50:08,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:50:08,621 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:50:08,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08 WrapperNode [2022-12-14 05:50:08,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:50:08,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:50:08,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:50:08,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:50:08,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,648 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-12-14 05:50:08,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:50:08,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:50:08,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:50:08,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:50:08,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:50:08,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:50:08,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:50:08,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:50:08,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (1/1) ... [2022-12-14 05:50:08,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:50:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:50:08,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:50:08,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:50:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:50:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:50:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:50:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:50:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:50:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:50:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:50:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:50:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:50:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:50:08,790 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:50:08,792 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:50:08,913 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:50:08,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:50:08,942 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 05:50:08,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:50:08 BoogieIcfgContainer [2022-12-14 05:50:08,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:50:08,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:50:08,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:50:08,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:50:08,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:50:08" (1/3) ... [2022-12-14 05:50:08,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fd47c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:50:08, skipping insertion in model container [2022-12-14 05:50:08,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:50:08" (2/3) ... [2022-12-14 05:50:08,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fd47c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:50:08, skipping insertion in model container [2022-12-14 05:50:08,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:50:08" (3/3) ... [2022-12-14 05:50:08,953 INFO L112 eAbstractionObserver]: Analyzing ICFG test25-2.c [2022-12-14 05:50:08,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:50:08,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:50:09,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:50:09,018 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;@486d19ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:50:09,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:50:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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 05:50:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 05:50:09,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:09,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:50:09,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:09,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash 994857001, now seen corresponding path program 1 times [2022-12-14 05:50:09,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:09,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802305620] [2022-12-14 05:50:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:09,235 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 05:50:09,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:50:09,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802305620] [2022-12-14 05:50:09,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802305620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:50:09,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:50:09,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:50:09,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773144460] [2022-12-14 05:50:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:50:09,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:50:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:50:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:50:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:50:09,271 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) 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 05:50:09,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:50:09,306 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2022-12-14 05:50:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:50:09,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 05:50:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:50:09,314 INFO L225 Difference]: With dead ends: 25 [2022-12-14 05:50:09,314 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 05:50:09,316 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 05:50:09,318 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:50:09,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:50:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 05:50:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-14 05:50:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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 05:50:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-12-14 05:50:09,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2022-12-14 05:50:09,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:50:09,342 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-12-14 05:50:09,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 05:50:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-12-14 05:50:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 05:50:09,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:09,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:50:09,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:50:09,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1531794660, now seen corresponding path program 1 times [2022-12-14 05:50:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:09,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863881356] [2022-12-14 05:50:09,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:09,476 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 05:50:09,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:50:09,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863881356] [2022-12-14 05:50:09,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863881356] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:50:09,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625812280] [2022-12-14 05:50:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:09,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:50:09,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:50:09,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:50:09,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:50:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:09,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:50:09,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:50:09,587 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 05:50:09,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:50:09,604 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 05:50:09,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625812280] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:50:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1781469888] [2022-12-14 05:50:09,619 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 05:50:09,619 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:50:09,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:50:09,626 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:50:09,626 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:50:09,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:09,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:09,770 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 05:50:09,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 05:50:09,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:09,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:09,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 35 [2022-12-14 05:50:09,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:09,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 05:50:09,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:09,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:09,898 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 31 treesize of output 37 [2022-12-14 05:50:09,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:09,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 05:50:10,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:10,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:10,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:10,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:10,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:10,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:10,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:10,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:50:10,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:10,106 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-12-14 05:50:10,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 306 treesize of output 312 [2022-12-14 05:50:10,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:10,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:10,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:10,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25 [2022-12-14 05:50:10,397 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 11 treesize of output 7 [2022-12-14 05:50:10,405 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 11 [2022-12-14 05:50:10,413 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 05:50:10,432 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:50:10,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1781469888] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:50:10,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:50:10,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 11 [2022-12-14 05:50:10,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27181409] [2022-12-14 05:50:10,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:50:10,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:50:10,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:50:10,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:50:10,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:50:10,631 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 05:50:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:50:10,692 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-12-14 05:50:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:50:10,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 05:50:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:50:10,693 INFO L225 Difference]: With dead ends: 17 [2022-12-14 05:50:10,693 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 05:50:10,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:50:10,695 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:50:10,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:50:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 05:50:10,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-14 05:50:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) 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 05:50:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-12-14 05:50:10,700 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2022-12-14 05:50:10,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:50:10,701 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-12-14 05:50:10,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 05:50:10,701 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-12-14 05:50:10,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 05:50:10,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:10,701 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:50:10,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:50:10,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:50:10,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1089883201, now seen corresponding path program 1 times [2022-12-14 05:50:10,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:10,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161181008] [2022-12-14 05:50:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:10,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:11,084 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 05:50:11,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:50:11,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161181008] [2022-12-14 05:50:11,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161181008] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:50:11,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540963845] [2022-12-14 05:50:11,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:11,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:50:11,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:50:11,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:50:11,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:50:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:11,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:50:11,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:50:11,150 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 05:50:11,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:50:11,161 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 05:50:11,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540963845] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:50:11,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1060553091] [2022-12-14 05:50:11,164 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 05:50:11,164 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:50:11,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:50:11,165 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:50:11,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:50:11,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,223 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2022-12-14 05:50:11,224 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 3 case distinctions, treesize of input 25 treesize of output 53 [2022-12-14 05:50:11,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,292 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 05:50:11,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 05:50:11,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:11,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,336 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 39 treesize of output 45 [2022-12-14 05:50:11,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:11,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:11,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:11,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:11,448 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 05:50:11,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 322 treesize of output 308 [2022-12-14 05:50:11,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:11,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25 [2022-12-14 05:50:11,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:11,535 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 05:50:11,542 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 11 treesize of output 7 [2022-12-14 05:50:11,550 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 11 [2022-12-14 05:50:11,646 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:50:11,863 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '253#(and (= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (= |#NULL.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) 4)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:50:11,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:50:11,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:50:11,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 05:50:11,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476568887] [2022-12-14 05:50:11,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:50:11,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:50:11,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:50:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:50:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-14 05:50:11,865 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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 05:50:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:50:11,887 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-12-14 05:50:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:50:11,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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 12 [2022-12-14 05:50:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:50:11,888 INFO L225 Difference]: With dead ends: 26 [2022-12-14 05:50:11,888 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 05:50:11,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-14 05:50:11,889 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:50:11,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:50:11,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 05:50:11,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 05:50:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) 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 05:50:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-12-14 05:50:11,893 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2022-12-14 05:50:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:50:11,893 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-12-14 05:50:11,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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 05:50:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-12-14 05:50:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 05:50:11,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:11,894 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:50:11,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:50:12,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:50:12,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:12,095 INFO L85 PathProgramCache]: Analyzing trace with hash -911837772, now seen corresponding path program 2 times [2022-12-14 05:50:12,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:12,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070516831] [2022-12-14 05:50:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:50:12,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:50:12,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070516831] [2022-12-14 05:50:12,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070516831] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:50:12,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783619831] [2022-12-14 05:50:12,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:50:12,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:50:12,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:50:12,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:50:12,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:50:12,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 05:50:12,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:50:12,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-14 05:50:12,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:50:12,304 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 11 treesize of output 7 [2022-12-14 05:50:12,308 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 11 treesize of output 7 [2022-12-14 05:50:12,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2022-12-14 05:50:12,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2022-12-14 05:50:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:50:12,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:50:12,546 INFO L321 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2022-12-14 05:50:12,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 41 [2022-12-14 05:50:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:50:12,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783619831] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:50:12,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [834930734] [2022-12-14 05:50:12,574 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 05:50:12,574 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:50:12,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:50:12,574 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:50:12,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:50:12,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,641 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 05:50:12,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 05:50:12,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 35 [2022-12-14 05:50:12,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:12,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,698 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 39 treesize of output 45 [2022-12-14 05:50:12,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:12,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:12,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:12,792 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 05:50:12,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 322 treesize of output 308 [2022-12-14 05:50:12,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:12,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:12,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25 [2022-12-14 05:50:12,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-12-14 05:50:12,892 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 05:50:12,898 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 11 treesize of output 7 [2022-12-14 05:50:12,905 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 11 [2022-12-14 05:50:12,994 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:50:13,329 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '427#(and (= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (= |#NULL.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) 4)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:50:13,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:50:13,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:50:13,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2022-12-14 05:50:13,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514854927] [2022-12-14 05:50:13,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:50:13,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 05:50:13,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:50:13,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 05:50:13,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-12-14 05:50:13,332 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 05:50:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:50:13,516 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-12-14 05:50:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 05:50:13,516 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 15 [2022-12-14 05:50:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:50:13,517 INFO L225 Difference]: With dead ends: 25 [2022-12-14 05:50:13,517 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 05:50:13,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 05:50:13,518 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:50:13,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 5 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:50:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 05:50:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 05:50:13,520 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 05:50:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 05:50:13,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-12-14 05:50:13,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:50:13,520 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 05:50:13,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 05:50:13,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 05:50:13,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 05:50:13,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 05:50:13,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:50:13,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:50:13,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 05:50:13,881 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 52) the Hoare annotation is: true [2022-12-14 05:50:13,881 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2022-12-14 05:50:13,881 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 45) no Hoare annotation was computed. [2022-12-14 05:50:13,881 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 05:50:13,882 INFO L895 garLoopResultBuilder]: At program point L29-3(lines 29 32) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-12-14 05:50:13,882 INFO L899 garLoopResultBuilder]: For program point L29-4(lines 23 52) no Hoare annotation was computed. [2022-12-14 05:50:13,882 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2022-12-14 05:50:13,882 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 05:50:13,882 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 46) no Hoare annotation was computed. [2022-12-14 05:50:13,882 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 23 52) the Hoare annotation is: false [2022-12-14 05:50:13,882 INFO L899 garLoopResultBuilder]: For program point L39-1(lines 39 41) no Hoare annotation was computed. [2022-12-14 05:50:13,882 INFO L895 garLoopResultBuilder]: At program point L39-3(lines 39 41) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) 4) |ULTIMATE.start_main_~pa~0#1.offset|) (= |ULTIMATE.start_main_~pa~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (<= |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|))) [2022-12-14 05:50:13,883 INFO L895 garLoopResultBuilder]: At program point L39-4(lines 39 41) the Hoare annotation is: (let ((.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (.cse0 (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) 4))) (and (= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (= .cse0 |ULTIMATE.start_main_~pa~0#1.offset|) (= |ULTIMATE.start_main_~pa~0#1.base| .cse1) (<= (select (select |#memory_int| .cse1) .cse0) |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|)))) [2022-12-14 05:50:13,885 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-14 05:50:13,886 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:50:13,893 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,893 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,896 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,896 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,898 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,898 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,898 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,898 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,899 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,899 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,899 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,899 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:50:13 BoogieIcfgContainer [2022-12-14 05:50:13,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:50:13,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:50:13,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:50:13,900 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:50:13,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:50:08" (3/4) ... [2022-12-14 05:50:13,902 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 05:50:13,908 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-14 05:50:13,909 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 05:50:13,909 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 05:50:13,909 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 05:50:13,930 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 05:50:13,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:50:13,931 INFO L158 Benchmark]: Toolchain (without parser) took 5495.45ms. Allocated memory was 142.6MB in the beginning and 226.5MB in the end (delta: 83.9MB). Free memory was 106.4MB in the beginning and 126.4MB in the end (delta: -20.0MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2022-12-14 05:50:13,931 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 111.6MB in the end (delta: 230.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:50:13,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.34ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 95.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:50:13,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.91ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:50:13,931 INFO L158 Benchmark]: Boogie Preprocessor took 23.74ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 92.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:50:13,932 INFO L158 Benchmark]: RCFGBuilder took 271.56ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 78.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 05:50:13,932 INFO L158 Benchmark]: TraceAbstraction took 4952.63ms. Allocated memory was 142.6MB in the beginning and 226.5MB in the end (delta: 83.9MB). Free memory was 77.9MB in the beginning and 129.6MB in the end (delta: -51.6MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2022-12-14 05:50:13,932 INFO L158 Benchmark]: Witness Printer took 30.54ms. Allocated memory is still 226.5MB. Free memory was 129.6MB in the beginning and 126.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 05:50:13,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 111.6MB in the end (delta: 230.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.34ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 95.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.91ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.74ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 92.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 271.56ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 78.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4952.63ms. Allocated memory was 142.6MB in the beginning and 226.5MB in the end (delta: 83.9MB). Free memory was 77.9MB in the beginning and 129.6MB in the end (delta: -51.6MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * Witness Printer took 30.54ms. Allocated memory is still 226.5MB. Free memory was 129.6MB in the beginning and 126.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.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 - 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_$Pointer$.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_$Pointer$.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_$Pointer$.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: 50]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158 IncrementalHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 22 mSDtfsCounter, 158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 14 NumberOfFragments, 106 HoareAnnotationTreeSize, 5 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 307 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 82 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 476 SizeOfPredicates, 18 NumberOfNonLiveVariables, 441 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 29/48 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: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 9, TOOLS_POST_TIME: 0.7s, 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: 9, TOOLS_QUANTIFIERELIM_TIME: 0.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 23, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, 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: 72, DAG_COMPRESSION_RETAINED_NODES: 26, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant [2022-12-14 05:50:13,938 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,938 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,938 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,938 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: ((cont == 0 && #memory_$Pointer$[cont][cont] + 4 == pa) && pa == #memory_$Pointer$[cont][cont]) && i <= unknown-#memory_int-unknown[pa][pa] - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((((cont == 0 && i <= 2147483647) && 0 <= i + 2147483648) && 0 <= j) && 0 <= cont) && 0 <= array) && array == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 39]: Loop Invariant [2022-12-14 05:50:13,939 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,939 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,939 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,939 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,940 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 05:50:13,940 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,940 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 05:50:13,940 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (((cont == 0 && #memory_$Pointer$[cont][cont] + 4 == pa) && pa == #memory_$Pointer$[cont][cont]) && unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4] <= i) && i <= unknown-#memory_int-unknown[pa][pa] RESULT: Ultimate proved your program to be correct! [2022-12-14 05:50:13,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f1d347-d590-48e8-9564-e95e66c4373d/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