./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-alloca/genady-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-memory-alloca/genady-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3cf25f06134410cf3fe2cb13bebb45512b92052388b257a9b0f3e089d05f1ab2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:19:33,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:19:33,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:19:33,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:19:33,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:19:33,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:19:33,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:19:33,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:19:33,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:19:33,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:19:33,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:19:33,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:19:33,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:19:33,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:19:33,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:19:33,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:19:33,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:19:33,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:19:33,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:19:33,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:19:33,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:19:33,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:19:33,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:19:33,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:19:33,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:19:33,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:19:33,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:19:33,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:19:33,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:19:33,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:19:33,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:19:33,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:19:33,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:19:33,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:19:33,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:19:33,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:19:33,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:19:33,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:19:33,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:19:33,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:19:33,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:19:33,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 02:19:33,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:19:33,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:19:33,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:19:33,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:19:33,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:19:33,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:19:33,492 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:19:33,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:19:33,493 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:19:33,493 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:19:33,493 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:19:33,494 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:19:33,494 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:19:33,494 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:19:33,494 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:19:33,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:19:33,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:19:33,495 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:19:33,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:19:33,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:19:33,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:19:33,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:19:33,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:19:33,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:19:33,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:19:33,498 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:19:33,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:19:33,499 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:19:33,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:19:33,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:19:33,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:19:33,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:19:33,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:19:33,500 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:19:33,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:19:33,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:19:33,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:19:33,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:19:33,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:19:33,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:19:33,502 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_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cf25f06134410cf3fe2cb13bebb45512b92052388b257a9b0f3e089d05f1ab2 [2022-11-22 02:19:33,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:19:33,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:19:33,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:19:33,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:19:33,910 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:19:33,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-memory-alloca/genady-alloca.i [2022-11-22 02:19:37,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:19:37,799 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:19:37,805 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/sv-benchmarks/c/termination-memory-alloca/genady-alloca.i [2022-11-22 02:19:37,823 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/data/9172a0d07/7526a7885ed747ca9c5d9e20cf30b1dc/FLAGe250b2a9c [2022-11-22 02:19:37,847 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/data/9172a0d07/7526a7885ed747ca9c5d9e20cf30b1dc [2022-11-22 02:19:37,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:19:37,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:19:37,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:19:37,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:19:37,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:19:37,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:19:37" (1/1) ... [2022-11-22 02:19:37,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2c1159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:37, skipping insertion in model container [2022-11-22 02:19:37,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:19:37" (1/1) ... [2022-11-22 02:19:37,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:19:38,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:19:38,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:19:38,317 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:19:38,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:19:38,391 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:19:38,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38 WrapperNode [2022-11-22 02:19:38,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:19:38,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:19:38,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:19:38,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:19:38,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,441 INFO L138 Inliner]: procedures = 109, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-11-22 02:19:38,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:19:38,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:19:38,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:19:38,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:19:38,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:19:38,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:19:38,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:19:38,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:19:38,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (1/1) ... [2022-11-22 02:19:38,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:19:38,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:19:38,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:19:38,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:19:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:19:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:19:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:19:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:19:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:19:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:19:38,719 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:19:38,721 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:19:38,856 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:19:38,889 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:19:38,889 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:19:38,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:19:38 BoogieIcfgContainer [2022-11-22 02:19:38,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:19:38,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:19:38,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:19:38,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:19:38,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:19:37" (1/3) ... [2022-11-22 02:19:38,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faa8e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:19:38, skipping insertion in model container [2022-11-22 02:19:38,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:38" (2/3) ... [2022-11-22 02:19:38,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faa8e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:19:38, skipping insertion in model container [2022-11-22 02:19:38,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:19:38" (3/3) ... [2022-11-22 02:19:38,905 INFO L112 eAbstractionObserver]: Analyzing ICFG genady-alloca.i [2022-11-22 02:19:38,929 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:19:38,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 02:19:38,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:19:38,999 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;@7cc9e896, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:19:38,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 02:19:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:39,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:19:39,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:39,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:19:39,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash 63619, now seen corresponding path program 1 times [2022-11-22 02:19:39,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:39,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802235548] [2022-11-22 02:19:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:39,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:39,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:39,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802235548] [2022-11-22 02:19:39,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802235548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:39,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:39,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:19:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972112274] [2022-11-22 02:19:39,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:39,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:19:39,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:39,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:19:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:19:39,885 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:39,987 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-11-22 02:19:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:19:39,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 02:19:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:40,002 INFO L225 Difference]: With dead ends: 29 [2022-11-22 02:19:40,002 INFO L226 Difference]: Without dead ends: 23 [2022-11-22 02:19:40,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:40,016 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:40,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:19:40,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-22 02:19:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2022-11-22 02:19:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-22 02:19:40,090 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 3 [2022-11-22 02:19:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:40,091 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-22 02:19:40,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,092 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-22 02:19:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:19:40,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:40,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:19:40,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:19:40,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:40,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1895313511, now seen corresponding path program 1 times [2022-11-22 02:19:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:40,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325833577] [2022-11-22 02:19:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:40,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:40,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325833577] [2022-11-22 02:19:40,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325833577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:40,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:40,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:19:40,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509362372] [2022-11-22 02:19:40,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:40,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:40,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:40,389 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:40,457 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-11-22 02:19:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:19:40,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-11-22 02:19:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:40,459 INFO L225 Difference]: With dead ends: 27 [2022-11-22 02:19:40,459 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 02:19:40,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:19:40,461 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:40,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 25 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:19:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 02:19:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2022-11-22 02:19:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-11-22 02:19:40,467 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 6 [2022-11-22 02:19:40,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:40,467 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-11-22 02:19:40,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,468 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-11-22 02:19:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:19:40,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:40,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:40,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:19:40,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:40,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1374823254, now seen corresponding path program 1 times [2022-11-22 02:19:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:40,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83829145] [2022-11-22 02:19:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:40,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:40,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83829145] [2022-11-22 02:19:40,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83829145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:40,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:40,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:19:40,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724080128] [2022-11-22 02:19:40,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:40,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:19:40,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:40,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:19:40,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:19:40,674 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:40,813 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-22 02:19:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:40,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:19:40,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:40,816 INFO L225 Difference]: With dead ends: 22 [2022-11-22 02:19:40,816 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 02:19:40,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:19:40,819 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:40,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:19:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 02:19:40,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-22 02:19:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.4) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-22 02:19:40,825 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 7 [2022-11-22 02:19:40,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:40,825 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-22 02:19:40,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,826 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-22 02:19:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:19:40,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:40,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:40,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:19:40,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash 330152573, now seen corresponding path program 1 times [2022-11-22 02:19:40,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:40,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31059938] [2022-11-22 02:19:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:40,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:41,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:41,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31059938] [2022-11-22 02:19:41,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31059938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:41,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:41,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:19:41,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483722731] [2022-11-22 02:19:41,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:41,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:19:41,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:41,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:19:41,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:19:41,109 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:41,158 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-22 02:19:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:19:41,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 [2022-11-22 02:19:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:41,159 INFO L225 Difference]: With dead ends: 25 [2022-11-22 02:19:41,159 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 02:19:41,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:41,161 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:41,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:19:41,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 02:19:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-22 02:19:41,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-22 02:19:41,167 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2022-11-22 02:19:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:41,167 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-22 02:19:41,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-22 02:19:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:19:41,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:41,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:41,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:19:41,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1644795226, now seen corresponding path program 1 times [2022-11-22 02:19:41,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:41,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912619529] [2022-11-22 02:19:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:41,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:41,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:41,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912619529] [2022-11-22 02:19:41,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912619529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:41,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:41,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:19:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413637577] [2022-11-22 02:19:41,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:41,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:19:41,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:19:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:19:41,380 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:41,425 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-11-22 02:19:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:19:41,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 02:19:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:41,426 INFO L225 Difference]: With dead ends: 24 [2022-11-22 02:19:41,426 INFO L226 Difference]: Without dead ends: 23 [2022-11-22 02:19:41,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:41,428 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:41,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:19:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-22 02:19:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-22 02:19:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-22 02:19:41,433 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 9 [2022-11-22 02:19:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:41,434 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-22 02:19:41,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:41,434 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-22 02:19:41,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:19:41,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:41,435 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:41,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:19:41,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:41,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:41,436 INFO L85 PathProgramCache]: Analyzing trace with hash 100248412, now seen corresponding path program 1 times [2022-11-22 02:19:41,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:41,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830087132] [2022-11-22 02:19:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:41,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:41,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:41,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830087132] [2022-11-22 02:19:41,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830087132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:19:41,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756908251] [2022-11-22 02:19:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:41,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:19:41,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:19:41,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:19:41,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:19:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:41,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-22 02:19:41,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:19:42,106 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-22 02:19:42,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-22 02:19:42,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:19:42,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-22 02:19:42,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2022-11-22 02:19:42,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-22 02:19:42,576 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-11-22 02:19:42,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 34 [2022-11-22 02:19:42,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 02:19:42,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2022-11-22 02:19:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:42,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:19:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:43,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756908251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:19:43,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [740111063] [2022-11-22 02:19:43,305 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:19:43,305 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:19:43,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:19:43,317 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:19:43,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:19:43,382 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:19:43,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-22 02:19:43,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 02:19:43,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:43,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-22 02:19:43,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:43,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 33 [2022-11-22 02:19:43,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:43,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-22 02:19:43,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:43,909 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-22 02:19:43,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 257 treesize of output 200 [2022-11-22 02:19:44,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:44,097 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-22 02:19:44,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 204 [2022-11-22 02:19:44,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:19:44,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:44,273 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:19:44,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:19:44,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:19:44,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:44,379 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:19:44,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:19:44,467 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:19:45,303 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '391#(and (= |ULTIMATE.start_main_#t~mem7#1| (select (select |#memory_int| |ULTIMATE.start_main_~j~0#1.base|) |ULTIMATE.start_main_~j~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~j~0#1.base|) (<= 0 |ULTIMATE.start_main_#t~malloc3#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.base|) (not (<= |ULTIMATE.start_main_#t~mem6#1| (+ 2147483647 |ULTIMATE.start_main_#t~mem7#1|))) (<= 0 |ULTIMATE.start_main_~i~0#1.offset|) (= |ULTIMATE.start_main_#t~malloc3#1.offset| 0) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~j~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~j~0#1.offset|) (= |ULTIMATE.start_main_#t~malloc2#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~i~0#1.base|) |ULTIMATE.start_main_~i~0#1.offset|)) (<= 0 |ULTIMATE.start_main_#t~malloc2#1.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-22 02:19:45,303 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:19:45,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:19:45,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2022-11-22 02:19:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475649763] [2022-11-22 02:19:45,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:19:45,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-22 02:19:45,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:45,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-22 02:19:45,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2022-11-22 02:19:45,306 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:45,892 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-11-22 02:19:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:19:45,893 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 02:19:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:45,894 INFO L225 Difference]: With dead ends: 23 [2022-11-22 02:19:45,894 INFO L226 Difference]: Without dead ends: 22 [2022-11-22 02:19:45,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 02:19:45,896 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:45,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:19:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-22 02:19:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-22 02:19:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-22 02:19:45,901 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2022-11-22 02:19:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:45,901 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-22 02:19:45,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-22 02:19:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 02:19:45,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:45,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:45,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:19:46,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:19:46,111 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1187266484, now seen corresponding path program 1 times [2022-11-22 02:19:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:46,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298933435] [2022-11-22 02:19:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:46,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:46,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:46,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298933435] [2022-11-22 02:19:46,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298933435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:19:46,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695962336] [2022-11-22 02:19:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:46,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:19:46,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:19:46,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:19:46,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:19:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:46,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 02:19:46,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:19:46,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-22 02:19:46,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:46,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-22 02:19:46,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:19:46,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:19:46,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2022-11-22 02:19:46,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-11-22 02:19:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:46,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:19:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:47,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695962336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:19:47,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253773322] [2022-11-22 02:19:47,174 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:19:47,174 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:19:47,175 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:19:47,175 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:19:47,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:19:47,206 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:19:47,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-22 02:19:47,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:47,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-22 02:19:47,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 02:19:47,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:47,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 33 [2022-11-22 02:19:47,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:47,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-22 02:19:47,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:47,525 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-22 02:19:47,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 257 treesize of output 200 [2022-11-22 02:19:47,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:47,636 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-22 02:19:47,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 204 [2022-11-22 02:19:47,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:19:47,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:47,813 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:19:47,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:19:47,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:19:47,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:47,905 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:19:47,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:19:47,941 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:19:48,537 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '548#(and (<= 0 |ULTIMATE.start_main_~j~0#1.base|) (<= 0 |ULTIMATE.start_main_#t~malloc3#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.offset|) (= |ULTIMATE.start_main_#t~malloc3#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1.offset| 0) (not (<= |ULTIMATE.start_main_#t~mem7#1| (+ |ULTIMATE.start_main_#t~mem6#1| 2147483648))) (<= 0 |ULTIMATE.start_main_~j~0#1.offset|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_main_#t~malloc2#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-22 02:19:48,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:19:48,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:19:48,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2022-11-22 02:19:48,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809144097] [2022-11-22 02:19:48,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:19:48,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 02:19:48,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:48,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 02:19:48,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2022-11-22 02:19:48,540 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) [2022-11-22 02:19:50,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:19:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:51,600 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2022-11-22 02:19:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:19:51,601 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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 12 [2022-11-22 02:19:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:51,602 INFO L225 Difference]: With dead ends: 43 [2022-11-22 02:19:51,602 INFO L226 Difference]: Without dead ends: 42 [2022-11-22 02:19:51,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 02:19:51,604 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 53 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:51,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 22 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 148 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 02:19:51,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-22 02:19:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-11-22 02:19:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-22 02:19:51,612 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 12 [2022-11-22 02:19:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:51,612 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-22 02:19:51,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) [2022-11-22 02:19:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-22 02:19:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:19:51,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:51,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:51,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 02:19:51,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:19:51,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:51,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1498211054, now seen corresponding path program 1 times [2022-11-22 02:19:51,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:51,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129963891] [2022-11-22 02:19:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:51,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:51,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:51,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129963891] [2022-11-22 02:19:51,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129963891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:51,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:51,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:51,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269002616] [2022-11-22 02:19:51,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:51,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:19:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:19:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:19:51,934 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-11-22 02:19:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:52,026 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-11-22 02:19:52,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:19:52,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) Word has length 14 [2022-11-22 02:19:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:52,029 INFO L225 Difference]: With dead ends: 33 [2022-11-22 02:19:52,029 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 02:19:52,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:19:52,030 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:52,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:19:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 02:19:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-22 02:19:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-11-22 02:19:52,034 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 14 [2022-11-22 02:19:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:52,034 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-11-22 02:19:52,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-11-22 02:19:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-11-22 02:19:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 02:19:52,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:52,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 02:19:52,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:19:52,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:52,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:52,046 INFO L85 PathProgramCache]: Analyzing trace with hash -800097533, now seen corresponding path program 1 times [2022-11-22 02:19:52,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:52,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227070378] [2022-11-22 02:19:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:52,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:52,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227070378] [2022-11-22 02:19:52,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227070378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:19:52,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496858010] [2022-11-22 02:19:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:52,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:19:52,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:19:52,271 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:19:52,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:19:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:52,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 02:19:52,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:19:52,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-22 02:19:52,417 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 11 treesize of output 7 [2022-11-22 02:19:52,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 02:19:52,496 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 17 treesize of output 9 [2022-11-22 02:19:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:52,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:19:52,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:19:52,608 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2022-11-22 02:19:52,612 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 35 treesize of output 27 [2022-11-22 02:19:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:52,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496858010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:19:52,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1123235572] [2022-11-22 02:19:52,631 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:19:52,632 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:19:52,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:19:52,632 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:19:52,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:19:52,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:52,669 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 02:19:52,670 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 1 case distinctions, treesize of input 27 treesize of output 19 [2022-11-22 02:19:52,698 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:19:52,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 02:19:52,723 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:19:52,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-22 02:19:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:52,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 45 [2022-11-22 02:19:52,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:52,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 35 [2022-11-22 02:19:52,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:19:52,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:52,954 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:19:52,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:19:52,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:19:53,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:19:53,048 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:19:53,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:19:53,085 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:19:53,664 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '843#(and (<= 0 |ULTIMATE.start_main_~j~0#1.base|) (<= 0 |ULTIMATE.start_main_#t~malloc3#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.offset|) (= |ULTIMATE.start_main_#t~malloc3#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem8#1| |ULTIMATE.start_main_#t~post9#1|) (= |ULTIMATE.start_main_#t~mem8#1| (select (select |#memory_int| |ULTIMATE.start_main_~j~0#1.base|) |ULTIMATE.start_main_~j~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~j~0#1.offset|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_main_#t~malloc2#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1.offset| 0) (< (+ 2147483649 |ULTIMATE.start_main_#t~post9#1|) 0) (= |#NULL.base| 0))' at error location [2022-11-22 02:19:53,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:19:53,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:19:53,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2022-11-22 02:19:53,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133367062] [2022-11-22 02:19:53,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:19:53,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:19:53,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:53,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:19:53,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=394, Unknown=2, NotChecked=0, Total=462 [2022-11-22 02:19:53,666 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:53,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:53,989 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-11-22 02:19:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:19:53,990 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 [2022-11-22 02:19:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:53,991 INFO L225 Difference]: With dead ends: 32 [2022-11-22 02:19:53,991 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 02:19:53,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=761, Unknown=2, NotChecked=0, Total=930 [2022-11-22 02:19:53,992 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 59 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:53,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 9 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:19:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 02:19:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-22 02:19:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-11-22 02:19:53,998 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 15 [2022-11-22 02:19:53,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:53,998 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-11-22 02:19:53,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:53,998 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-11-22 02:19:54,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 02:19:54,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:54,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-11-22 02:19:54,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:19:54,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-22 02:19:54,211 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:19:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:54,211 INFO L85 PathProgramCache]: Analyzing trace with hash -94568077, now seen corresponding path program 1 times [2022-11-22 02:19:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:54,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361051523] [2022-11-22 02:19:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:54,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:54,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:54,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361051523] [2022-11-22 02:19:54,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361051523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:19:54,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007100255] [2022-11-22 02:19:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:19:54,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:19:54,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:19:54,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:19:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:54,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 02:19:54,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:19:54,604 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-22 02:19:54,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-22 02:19:54,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:19:54,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-22 02:19:54,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2022-11-22 02:19:54,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2022-11-22 02:19:54,850 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-11-22 02:19:54,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 24 [2022-11-22 02:19:54,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 02:19:55,080 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 02:19:55,081 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 45 treesize of output 33 [2022-11-22 02:19:55,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 16 [2022-11-22 02:19:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:55,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:19:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:59,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007100255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:19:59,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1004392956] [2022-11-22 02:19:59,755 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:19:59,755 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:19:59,756 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:19:59,756 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:19:59,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:19:59,804 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:19:59,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-22 02:19:59,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 02:19:59,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:59,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-22 02:19:59,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:59,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 33 [2022-11-22 02:19:59,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:59,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-22 02:20:00,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:20:00,109 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-22 02:20:00,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 257 treesize of output 200 [2022-11-22 02:20:00,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:20:00,294 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-22 02:20:00,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 204 [2022-11-22 02:20:00,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:20:00,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:20:00,471 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:20:00,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:20:00,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:20:00,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:20:00,569 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:20:00,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:20:00,605 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:20:01,308 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1055#(and (<= 0 |ULTIMATE.start_main_~j~0#1.base|) (= |ULTIMATE.start_main_#t~mem4#1| (select (select |#memory_int| |ULTIMATE.start_main_~i~0#1.base|) |ULTIMATE.start_main_~i~0#1.offset|)) (<= 0 |ULTIMATE.start_main_#t~malloc3#1.base|) (<= 0 (+ (select (select |#memory_int| |ULTIMATE.start_main_~j~0#1.base|) |ULTIMATE.start_main_~j~0#1.offset|) 2147483648)) (<= 0 |ULTIMATE.start_main_~i~0#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.offset|) (= |ULTIMATE.start_main_#t~malloc3#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1.offset| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~j~0#1.base|) |ULTIMATE.start_main_~j~0#1.offset|) 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1.offset|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_main_#t~malloc2#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem4#1| |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2022-11-22 02:20:01,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:20:01,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:20:01,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 8] total 18 [2022-11-22 02:20:01,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952983558] [2022-11-22 02:20:01,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:20:01,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-22 02:20:01,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:20:01,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-22 02:20:01,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=588, Unknown=14, NotChecked=0, Total=756 [2022-11-22 02:20:01,310 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:20:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:02,100 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-22 02:20:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:20:02,101 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-22 02:20:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:02,102 INFO L225 Difference]: With dead ends: 31 [2022-11-22 02:20:02,102 INFO L226 Difference]: Without dead ends: 30 [2022-11-22 02:20:02,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=348, Invalid=1198, Unknown=14, NotChecked=0, Total=1560 [2022-11-22 02:20:02,104 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 114 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:02,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:20:02,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-22 02:20:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-11-22 02:20:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:20:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-11-22 02:20:02,109 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 17 [2022-11-22 02:20:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:02,110 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-11-22 02:20:02,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:20:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-11-22 02:20:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 02:20:02,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:02,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1] [2022-11-22 02:20:02,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:20:02,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:20:02,318 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:20:02,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash -988386342, now seen corresponding path program 2 times [2022-11-22 02:20:02,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:20:02,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979365733] [2022-11-22 02:20:02,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:02,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:20:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:20:03,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:03,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979365733] [2022-11-22 02:20:03,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979365733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:20:03,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989119349] [2022-11-22 02:20:03,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:20:03,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:03,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:20:03,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:20:03,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:20:03,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 02:20:03,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:20:03,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 02:20:03,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:20:03,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-22 02:20:03,445 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 11 treesize of output 7 [2022-11-22 02:20:03,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-22 02:20:03,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-22 02:20:03,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2022-11-22 02:20:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:20:03,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:20:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:20:04,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989119349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:20:04,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1622415005] [2022-11-22 02:20:04,101 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:20:04,101 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:20:04,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:20:04,102 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:20:04,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:20:04,137 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:20:04,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-22 02:20:04,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 02:20:04,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:20:04,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-22 02:20:04,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:20:04,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 33 [2022-11-22 02:20:04,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:20:04,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-22 02:20:04,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:20:04,422 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-22 02:20:04,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 257 treesize of output 200 [2022-11-22 02:20:04,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:20:04,516 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-22 02:20:04,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 204 [2022-11-22 02:20:04,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:20:04,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:20:04,671 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:20:04,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:20:04,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2022-11-22 02:20:04,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:20:04,775 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:20:04,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 45 [2022-11-22 02:20:04,816 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:20:05,438 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1344#(and (<= 0 |ULTIMATE.start_main_~j~0#1.base|) (<= 0 |ULTIMATE.start_main_#t~malloc3#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.offset|) (= |ULTIMATE.start_main_#t~malloc3#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1.offset| 0) (not (<= |ULTIMATE.start_main_#t~mem7#1| (+ |ULTIMATE.start_main_#t~mem6#1| 2147483648))) (<= 0 |ULTIMATE.start_main_~j~0#1.offset|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_main_#t~malloc2#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-22 02:20:05,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:20:05,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:20:05,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 26 [2022-11-22 02:20:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678261772] [2022-11-22 02:20:05,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:20:05,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 02:20:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:20:05,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 02:20:05,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 02:20:05,442 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:20:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:06,185 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2022-11-22 02:20:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-22 02:20:06,186 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 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 28 [2022-11-22 02:20:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:06,186 INFO L225 Difference]: With dead ends: 40 [2022-11-22 02:20:06,186 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:20:06,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=329, Invalid=1833, Unknown=0, NotChecked=0, Total=2162 [2022-11-22 02:20:06,189 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:06,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:20:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:20:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:20:06,190 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) [2022-11-22 02:20:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:20:06,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-11-22 02:20:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:06,190 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:20:06,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:20:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:20:06,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:20:06,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-22 02:20:06,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-22 02:20:06,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-22 02:20:06,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-22 02:20:06,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-22 02:20:06,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-22 02:20:06,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:20:06,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:06,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 02:20:06,488 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 550) no Hoare annotation was computed. [2022-11-22 02:20:06,489 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 02:20:06,489 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 551) no Hoare annotation was computed. [2022-11-22 02:20:06,489 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 550) no Hoare annotation was computed. [2022-11-22 02:20:06,489 INFO L899 garLoopResultBuilder]: For program point L550-1(line 550) no Hoare annotation was computed. [2022-11-22 02:20:06,489 INFO L899 garLoopResultBuilder]: For program point L550-2(line 550) no Hoare annotation was computed. [2022-11-22 02:20:06,489 INFO L899 garLoopResultBuilder]: For program point L550-3(lines 550 552) no Hoare annotation was computed. [2022-11-22 02:20:06,489 INFO L899 garLoopResultBuilder]: For program point L550-6(line 550) no Hoare annotation was computed. [2022-11-22 02:20:06,490 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 550) no Hoare annotation was computed. [2022-11-22 02:20:06,490 INFO L899 garLoopResultBuilder]: For program point L550-7(line 550) no Hoare annotation was computed. [2022-11-22 02:20:06,490 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 551) no Hoare annotation was computed. [2022-11-22 02:20:06,490 INFO L895 garLoopResultBuilder]: At program point L550-8(lines 550 552) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~j~0#1.offset| 0)) (.cse2 (select (select |#memory_int| |ULTIMATE.start_main_~i~0#1.base|) |ULTIMATE.start_main_~i~0#1.offset|)) (.cse1 (select (select |#memory_int| |ULTIMATE.start_main_~j~0#1.base|) |ULTIMATE.start_main_~j~0#1.offset|)) (.cse3 (= |ULTIMATE.start_main_~i~0#1.offset| 0))) (or (and .cse0 (= .cse1 1) (= 10000 .cse2) .cse3) (and (<= .cse2 2147483647) (<= 0 (+ .cse1 2147483648)) .cse0 (<= .cse1 (+ .cse2 1)) (<= .cse2 (+ 9997 .cse1)) .cse3 (not (= |ULTIMATE.start_main_~j~0#1.base| |ULTIMATE.start_main_~i~0#1.base|))))) [2022-11-22 02:20:06,490 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 02:20:06,490 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 550) no Hoare annotation was computed. [2022-11-22 02:20:06,491 INFO L899 garLoopResultBuilder]: For program point L550-9(lines 550 552) no Hoare annotation was computed. [2022-11-22 02:20:06,491 INFO L899 garLoopResultBuilder]: For program point L551(line 551) no Hoare annotation was computed. [2022-11-22 02:20:06,491 INFO L899 garLoopResultBuilder]: For program point L551-1(line 551) no Hoare annotation was computed. [2022-11-22 02:20:06,495 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:20:06,497 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:20:06,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:20:06 BoogieIcfgContainer [2022-11-22 02:20:06,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:20:06,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:20:06,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:20:06,520 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:20:06,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:19:38" (3/4) ... [2022-11-22 02:20:06,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:20:06,536 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-22 02:20:06,537 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-22 02:20:06,537 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 02:20:06,538 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 02:20:06,593 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:20:06,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:20:06,594 INFO L158 Benchmark]: Toolchain (without parser) took 28737.39ms. Allocated memory was 132.1MB in the beginning and 287.3MB in the end (delta: 155.2MB). Free memory was 68.8MB in the beginning and 198.1MB in the end (delta: -129.3MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2022-11-22 02:20:06,595 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:20:06,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 530.77ms. Allocated memory was 132.1MB in the beginning and 199.2MB in the end (delta: 67.1MB). Free memory was 68.6MB in the beginning and 156.3MB in the end (delta: -87.7MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-11-22 02:20:06,595 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.30ms. Allocated memory is still 199.2MB. Free memory was 156.3MB in the beginning and 154.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:20:06,596 INFO L158 Benchmark]: Boogie Preprocessor took 59.91ms. Allocated memory is still 199.2MB. Free memory was 154.8MB in the beginning and 153.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:20:06,596 INFO L158 Benchmark]: RCFGBuilder took 390.04ms. Allocated memory is still 199.2MB. Free memory was 153.6MB in the beginning and 141.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 02:20:06,597 INFO L158 Benchmark]: TraceAbstraction took 27622.38ms. Allocated memory was 199.2MB in the beginning and 287.3MB in the end (delta: 88.1MB). Free memory was 141.1MB in the beginning and 201.2MB in the end (delta: -60.1MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2022-11-22 02:20:06,598 INFO L158 Benchmark]: Witness Printer took 73.91ms. Allocated memory is still 287.3MB. Free memory was 200.2MB in the beginning and 198.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:20:06,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 530.77ms. Allocated memory was 132.1MB in the beginning and 199.2MB in the end (delta: 67.1MB). Free memory was 68.6MB in the beginning and 156.3MB in the end (delta: -87.7MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.30ms. Allocated memory is still 199.2MB. Free memory was 156.3MB in the beginning and 154.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.91ms. Allocated memory is still 199.2MB. Free memory was 154.8MB in the beginning and 153.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 390.04ms. Allocated memory is still 199.2MB. Free memory was 153.6MB in the beginning and 141.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 27622.38ms. Allocated memory was 199.2MB in the beginning and 287.3MB in the end (delta: 88.1MB). Free memory was 141.1MB in the beginning and 201.2MB in the end (delta: -60.1MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Witness Printer took 73.91ms. Allocated memory is still 287.3MB. Free memory was 200.2MB in the beginning and 198.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 550]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 550]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 551]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 551]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 550]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 550]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 27.5s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 422 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 422 mSDsluCounter, 174 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 130 mSDsCounter, 121 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 759 IncrementalHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 121 mSolverCounterUnsat, 44 mSDtfsCounter, 759 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 357 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1675 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=7, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 24 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 75 HoareAnnotationTreeSize, 1 FomulaSimplifications, 52 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 203 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 213 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 275 ConstructedInterpolants, 38 QuantifiedInterpolants, 4501 SizeOfPredicates, 48 NumberOfNonLiveVariables, 470 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 66/161 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 550]: Loop Invariant Derived loop invariant: (((j == 0 && unknown-#memory_int-unknown[j][j] == 1) && 10000 == unknown-#memory_int-unknown[i][i]) && i == 0) || ((((((unknown-#memory_int-unknown[i][i] <= 2147483647 && 0 <= unknown-#memory_int-unknown[j][j] + 2147483648) && j == 0) && unknown-#memory_int-unknown[j][j] <= unknown-#memory_int-unknown[i][i] + 1) && unknown-#memory_int-unknown[i][i] <= 9997 + unknown-#memory_int-unknown[j][j]) && i == 0) && !(j == i)) RESULT: Ultimate proved your program to be correct! [2022-11-22 02:20:06,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d90c28d-af73-44a4-b6eb-73eabafba387/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE