./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-dietlibc/strstr.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-dietlibc/strstr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur --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 4f0de1cabcaa1e7c1b5012604e9626b39d1f0fa44ba0399b8bd31764898831fc --- 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-38b53e6 [2022-11-26 00:51:43,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:51:43,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:51:43,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:51:43,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:51:43,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:51:43,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:51:43,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:51:43,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:51:43,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:51:43,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:51:43,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:51:43,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:51:43,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:51:43,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:51:43,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:51:43,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:51:43,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:51:43,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:51:43,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:51:43,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:51:43,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:51:43,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:51:43,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:51:43,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:51:43,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:51:43,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:51:43,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:51:43,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:51:43,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:51:43,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:51:43,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:51:43,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:51:43,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:51:43,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:51:43,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:51:43,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:51:43,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:51:43,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:51:43,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:51:43,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:51:43,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 00:51:43,491 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:51:43,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:51:43,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:51:43,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:51:43,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:51:43,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:51:43,494 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:51:43,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:51:43,495 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:51:43,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:51:43,497 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:51:43,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:51:43,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:51:43,498 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:51:43,498 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:51:43,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:51:43,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:51:43,499 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:51:43,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:51:43,501 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:51:43,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:51:43,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:51:43,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:51:43,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:51:43,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:51:43,502 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:51:43,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:51:43,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:51:43,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:51:43,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:51:43,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:51:43,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:51:43,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:51:43,505 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:51:43,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:51:43,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:51:43,506 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:51:43,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:51:43,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:51:43,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:51:43,507 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_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0de1cabcaa1e7c1b5012604e9626b39d1f0fa44ba0399b8bd31764898831fc [2022-11-26 00:51:43,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:51:43,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:51:43,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:51:43,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:51:43,957 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:51:43,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/termination-dietlibc/strstr.i [2022-11-26 00:51:47,794 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:51:48,063 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:51:48,064 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/sv-benchmarks/c/termination-dietlibc/strstr.i [2022-11-26 00:51:48,076 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/data/2acf6055e/627f8e8f8abd41b788bf5dc0b5c51e52/FLAGc7cb73d13 [2022-11-26 00:51:48,094 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/data/2acf6055e/627f8e8f8abd41b788bf5dc0b5c51e52 [2022-11-26 00:51:48,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:51:48,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:51:48,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:51:48,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:51:48,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:51:48,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c85edab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48, skipping insertion in model container [2022-11-26 00:51:48,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:51:48,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:51:48,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:51:48,517 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:51:48,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:51:48,596 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:51:48,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48 WrapperNode [2022-11-26 00:51:48,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:51:48,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:51:48,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:51:48,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:51:48,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,651 INFO L138 Inliner]: procedures = 116, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 154 [2022-11-26 00:51:48,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:51:48,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:51:48,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:51:48,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:51:48,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,685 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:51:48,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:51:48,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:51:48,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:51:48,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (1/1) ... [2022-11-26 00:51:48,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:51:48,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:51:48,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:51:48,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:51:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:51:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:51:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:51:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2022-11-26 00:51:48,823 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen [2022-11-26 00:51:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:51:48,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:51:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:51:48,988 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:51:48,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:51:49,329 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:51:49,361 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:51:49,362 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-26 00:51:49,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:51:49 BoogieIcfgContainer [2022-11-26 00:51:49,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:51:49,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:51:49,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:51:49,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:51:49,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:51:48" (1/3) ... [2022-11-26 00:51:49,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1232bbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:51:49, skipping insertion in model container [2022-11-26 00:51:49,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:51:48" (2/3) ... [2022-11-26 00:51:49,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1232bbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:51:49, skipping insertion in model container [2022-11-26 00:51:49,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:51:49" (3/3) ... [2022-11-26 00:51:49,382 INFO L112 eAbstractionObserver]: Analyzing ICFG strstr.i [2022-11-26 00:51:49,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:51:49,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-26 00:51:49,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:51:49,465 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;@18f92861, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:51:49,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-26 00:51:49,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 40 states have (on average 1.775) internal successors, (71), 54 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:51:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:51:49,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:49,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:51:49,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:49,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:49,483 INFO L85 PathProgramCache]: Analyzing trace with hash 186373, now seen corresponding path program 1 times [2022-11-26 00:51:49,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:49,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950256281] [2022-11-26 00:51:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:49,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:49,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950256281] [2022-11-26 00:51:49,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950256281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:49,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:49,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:51:49,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364468327] [2022-11-26 00:51:49,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:49,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:51:49,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:51:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:49,722 INFO L87 Difference]: Start difference. First operand has 58 states, 40 states have (on average 1.775) internal successors, (71), 54 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) 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) [2022-11-26 00:51:49,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:49,794 INFO L93 Difference]: Finished difference Result 104 states and 139 transitions. [2022-11-26 00:51:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:51:49,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2022-11-26 00:51:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:49,803 INFO L225 Difference]: With dead ends: 104 [2022-11-26 00:51:49,804 INFO L226 Difference]: Without dead ends: 27 [2022-11-26 00:51:49,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:49,810 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 52 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:49,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 62 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-26 00:51:49,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-26 00:51:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 26 states have internal predecessors, (28), 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) [2022-11-26 00:51:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-11-26 00:51:49,852 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 3 [2022-11-26 00:51:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:49,852 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-11-26 00:51:49,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2022-11-26 00:51:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-11-26 00:51:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:51:49,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:49,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:51:49,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:51:49,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash 5777628, now seen corresponding path program 1 times [2022-11-26 00:51:49,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:49,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875632841] [2022-11-26 00:51:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:49,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:49,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875632841] [2022-11-26 00:51:49,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875632841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:49,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:49,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:51:49,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262300920] [2022-11-26 00:51:49,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:49,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:51:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:51:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:49,906 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:49,929 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-11-26 00:51:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:51:49,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 00:51:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:49,930 INFO L225 Difference]: With dead ends: 27 [2022-11-26 00:51:49,931 INFO L226 Difference]: Without dead ends: 25 [2022-11-26 00:51:49,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:49,933 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:49,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-26 00:51:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-26 00:51:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 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) [2022-11-26 00:51:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-26 00:51:49,940 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 4 [2022-11-26 00:51:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:49,940 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-26 00:51:49,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-26 00:51:49,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:51:49,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:49,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:51:49,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:51:49,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:49,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1257339207, now seen corresponding path program 1 times [2022-11-26 00:51:49,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:49,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110864937] [2022-11-26 00:51:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:50,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:50,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110864937] [2022-11-26 00:51:50,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110864937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:50,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:50,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:51:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878139971] [2022-11-26 00:51:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:50,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:51:50,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:51:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:51:50,104 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2022-11-26 00:51:50,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:50,162 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2022-11-26 00:51:50,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:51:50,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 [2022-11-26 00:51:50,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:50,165 INFO L225 Difference]: With dead ends: 48 [2022-11-26 00:51:50,165 INFO L226 Difference]: Without dead ends: 46 [2022-11-26 00:51:50,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:51:50,167 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:50,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 58 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-26 00:51:50,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2022-11-26 00:51:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-11-26 00:51:50,176 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 6 [2022-11-26 00:51:50,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:50,176 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-11-26 00:51:50,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2022-11-26 00:51:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-11-26 00:51:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:51:50,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:50,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:50,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:51:50,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash 869225359, now seen corresponding path program 1 times [2022-11-26 00:51:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:50,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106649753] [2022-11-26 00:51:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:50,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:50,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:50,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106649753] [2022-11-26 00:51:50,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106649753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:50,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:50,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:51:50,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790389640] [2022-11-26 00:51:50,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:50,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:51:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:50,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:51:50,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:50,312 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-11-26 00:51:50,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:50,354 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-26 00:51:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:51:50,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 [2022-11-26 00:51:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:50,360 INFO L225 Difference]: With dead ends: 30 [2022-11-26 00:51:50,360 INFO L226 Difference]: Without dead ends: 28 [2022-11-26 00:51:50,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:50,362 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:50,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-26 00:51:50,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-26 00:51:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 27 states have internal predecessors, (30), 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) [2022-11-26 00:51:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-11-26 00:51:50,376 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 9 [2022-11-26 00:51:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:50,376 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-11-26 00:51:50,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-11-26 00:51:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-11-26 00:51:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:51:50,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:50,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:50,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:51:50,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1176182448, now seen corresponding path program 1 times [2022-11-26 00:51:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:50,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347161100] [2022-11-26 00:51:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:50,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:50,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:50,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347161100] [2022-11-26 00:51:50,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347161100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:50,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:50,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:51:50,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88412276] [2022-11-26 00:51:50,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:50,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:51:50,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:51:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:50,475 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:50,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:50,496 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-26 00:51:50,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:51:50,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:51:50,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:50,497 INFO L225 Difference]: With dead ends: 28 [2022-11-26 00:51:50,498 INFO L226 Difference]: Without dead ends: 24 [2022-11-26 00:51:50,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:50,500 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:50,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 23 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-26 00:51:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-26 00:51:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 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) [2022-11-26 00:51:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-11-26 00:51:50,506 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2022-11-26 00:51:50,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:50,507 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-11-26 00:51:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-11-26 00:51:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:51:50,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:50,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:51:50,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:51:50,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:50,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash -611916750, now seen corresponding path program 1 times [2022-11-26 00:51:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:50,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158454624] [2022-11-26 00:51:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:50,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:50,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:50,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158454624] [2022-11-26 00:51:50,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158454624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:51:50,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724001031] [2022-11-26 00:51:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:50,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:50,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:51:50,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:51:50,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:51:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:50,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:51:50,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:51:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:50,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:51:50,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724001031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:50,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:51:50,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-26 00:51:50,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167339730] [2022-11-26 00:51:50,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:50,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:51:50,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:50,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:51:50,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:51:50,931 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-26 00:51:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:51,031 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-26 00:51:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:51:51,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 [2022-11-26 00:51:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:51,033 INFO L225 Difference]: With dead ends: 34 [2022-11-26 00:51:51,033 INFO L226 Difference]: Without dead ends: 33 [2022-11-26 00:51:51,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:51:51,043 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:51,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 80 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-26 00:51:51,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2022-11-26 00:51:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 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) [2022-11-26 00:51:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-26 00:51:51,048 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11 [2022-11-26 00:51:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:51,048 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-26 00:51:51,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-26 00:51:51,049 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-26 00:51:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:51:51,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:51,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2022-11-26 00:51:51,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:51:51,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:51,260 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:51,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:51,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1789549990, now seen corresponding path program 1 times [2022-11-26 00:51:51,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:51,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933650390] [2022-11-26 00:51:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:51,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:51,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:51,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933650390] [2022-11-26 00:51:51,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933650390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:51:51,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506853280] [2022-11-26 00:51:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:51,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:51,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:51:51,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:51:51,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:51:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:51,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:51:51,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:51:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:51,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:51:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:51,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506853280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:51:51,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [70759802] [2022-11-26 00:51:51,639 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:51:51,640 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:51:51,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:51:51,650 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:51:51,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:51:51,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 17 [2022-11-26 00:51:51,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-26 00:51:51,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:51:51,940 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-26 00:51:51,941 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 1 case distinctions, treesize of input 126 treesize of output 125 [2022-11-26 00:51:52,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:51:52,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:51:52,287 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:51:52,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [70759802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:52,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:51:52,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5] total 14 [2022-11-26 00:51:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787825136] [2022-11-26 00:51:52,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:52,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:51:52,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:52,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:51:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:51:52,600 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:52,840 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-26 00:51:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:51:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-26 00:51:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:52,842 INFO L225 Difference]: With dead ends: 23 [2022-11-26 00:51:52,842 INFO L226 Difference]: Without dead ends: 22 [2022-11-26 00:51:52,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:51:52,843 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:52,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 12 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-26 00:51:52,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2022-11-26 00:51:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) 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) [2022-11-26 00:51:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-11-26 00:51:52,847 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2022-11-26 00:51:52,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:52,848 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-11-26 00:51:52,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:52,848 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-11-26 00:51:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:51:52,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:52,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:52,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:51:53,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:53,050 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:53,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:53,052 INFO L85 PathProgramCache]: Analyzing trace with hash 734939643, now seen corresponding path program 1 times [2022-11-26 00:51:53,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:53,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106790165] [2022-11-26 00:51:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:53,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:53,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:53,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106790165] [2022-11-26 00:51:53,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106790165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:53,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:53,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:51:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785555520] [2022-11-26 00:51:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:53,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:51:53,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:51:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:51:53,130 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:53,157 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-11-26 00:51:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:51:53,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-26 00:51:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:53,158 INFO L225 Difference]: With dead ends: 24 [2022-11-26 00:51:53,158 INFO L226 Difference]: Without dead ends: 22 [2022-11-26 00:51:53,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:51:53,160 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:53,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-26 00:51:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-26 00:51:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 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) [2022-11-26 00:51:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-26 00:51:53,171 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2022-11-26 00:51:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:53,172 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-26 00:51:53,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-26 00:51:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 00:51:53,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:53,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:51:53,175 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:53,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1225341116, now seen corresponding path program 1 times [2022-11-26 00:51:53,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:53,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19010532] [2022-11-26 00:51:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:53,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:53,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:53,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19010532] [2022-11-26 00:51:53,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19010532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:51:53,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369236865] [2022-11-26 00:51:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:53,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:53,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:51:53,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:51:53,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:51:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:53,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:51:53,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:51:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:53,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:51:53,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369236865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:53,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:51:53,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-26 00:51:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211070981] [2022-11-26 00:51:53,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:53,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:51:53,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:53,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:51:53,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:51:53,443 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:53,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:53,482 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-26 00:51:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:51:53,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-26 00:51:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:53,483 INFO L225 Difference]: With dead ends: 22 [2022-11-26 00:51:53,483 INFO L226 Difference]: Without dead ends: 21 [2022-11-26 00:51:53,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:51:53,484 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:53,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 49 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-26 00:51:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-26 00:51:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 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) [2022-11-26 00:51:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-26 00:51:53,490 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2022-11-26 00:51:53,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:53,491 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-26 00:51:53,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-26 00:51:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:51:53,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:53,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:53,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:51:53,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-26 00:51:53,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash -669130962, now seen corresponding path program 1 times [2022-11-26 00:51:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:53,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759194008] [2022-11-26 00:51:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:53,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:53,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:53,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759194008] [2022-11-26 00:51:53,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759194008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:51:53,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515755352] [2022-11-26 00:51:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:53,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:53,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:51:53,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:51:53,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:51:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:53,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:51:53,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:51:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:53,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:51:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:53,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515755352] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:51:53,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [483911130] [2022-11-26 00:51:53,997 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:51:53,997 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:51:53,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:51:53,998 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:51:53,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:51:54,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 17 [2022-11-26 00:51:54,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-26 00:51:54,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-26 00:51:54,099 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:51:54,099 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 2 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:51:54,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:51:54,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:54,163 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 24 treesize of output 23 [2022-11-26 00:51:54,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:54,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:54,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-11-26 00:51:54,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:54,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:54,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:51:54,519 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-26 00:51:54,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 267 treesize of output 246 [2022-11-26 00:51:54,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:51:54,709 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:51:55,778 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1016#(and (= |ULTIMATE.start_main_#t~malloc20#1.offset| 0) (<= |ULTIMATE.start_main_~needle~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc24#1.offset| 0) (<= |ULTIMATE.start_main_~in_len~0#1| 1) (<= 0 |ULTIMATE.start_main_#t~malloc20#1.base|) (<= 0 |ULTIMATE.start_main_#t~malloc24#1.base|) (= |ULTIMATE.start_main_~i~2#1| 0) (<= |ULTIMATE.start_main_~out_len~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post25#1|) (<= 0 |ULTIMATE.start_main_~needle~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~hay~0#1.base|) (<= 0 |ULTIMATE.start_main_~hay~0#1.offset|) (<= 0 |ULTIMATE.start_main_~needle~0#1.offset|) (<= 0 |ULTIMATE.start_main_~i~3#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~hay~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~in_len~0#1|) (= |#NULL.base| 0) (<= 1 |ULTIMATE.start_main_~out_len~0#1|))' at error location [2022-11-26 00:51:55,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:51:55,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:51:55,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-26 00:51:55,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76705194] [2022-11-26 00:51:55,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:51:55,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:51:55,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:55,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:51:55,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:51:55,781 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 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) [2022-11-26 00:51:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:55,892 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-11-26 00:51:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:51:55,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 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 18 [2022-11-26 00:51:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:55,893 INFO L225 Difference]: With dead ends: 37 [2022-11-26 00:51:55,893 INFO L226 Difference]: Without dead ends: 36 [2022-11-26 00:51:55,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:51:55,895 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:55,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 81 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:51:55,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-26 00:51:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-26 00:51:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 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) [2022-11-26 00:51:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-11-26 00:51:55,903 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 18 [2022-11-26 00:51:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:55,903 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-11-26 00:51:55,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 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) [2022-11-26 00:51:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-11-26 00:51:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-26 00:51:55,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:55,905 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:55,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:51:56,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:51:56,112 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:51:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash -480099185, now seen corresponding path program 2 times [2022-11-26 00:51:56,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:56,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788688004] [2022-11-26 00:51:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:56,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:56,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:56,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788688004] [2022-11-26 00:51:56,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788688004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:51:56,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382297798] [2022-11-26 00:51:56,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:51:56,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:56,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:51:56,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:51:56,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:51:56,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-26 00:51:56,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:51:56,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:51:56,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:51:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-26 00:51:56,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:51:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-26 00:51:56,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382297798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:51:56,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1379256763] [2022-11-26 00:51:56,622 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:51:56,623 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:51:56,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:51:56,623 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:51:56,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:51:56,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-26 00:51:56,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 17 [2022-11-26 00:51:56,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-26 00:51:56,751 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:51:56,752 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 2 case distinctions, treesize of input 22 treesize of output 29 [2022-11-26 00:51:56,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:51:56,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:56,821 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 24 treesize of output 23 [2022-11-26 00:51:56,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:56,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2022-11-26 00:51:57,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:57,193 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-11-26 00:51:57,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 273 treesize of output 243 [2022-11-26 00:51:57,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:51:57,430 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:51:59,012 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1324#(and (= |ULTIMATE.start_main_#t~malloc20#1.offset| 0) (<= |ULTIMATE.start_main_~needle~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc24#1.offset| 0) (<= |ULTIMATE.start_main_~in_len~0#1| 1) (<= 0 |ULTIMATE.start_main_#t~malloc20#1.base|) (<= 0 |ULTIMATE.start_main_#t~malloc24#1.base|) (= |ULTIMATE.start_main_~i~2#1| 0) (<= |ULTIMATE.start_main_~out_len~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post25#1|) (<= 0 |ULTIMATE.start_main_~needle~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~hay~0#1.base|) (<= 0 |ULTIMATE.start_main_~hay~0#1.offset|) (<= 0 |ULTIMATE.start_main_~needle~0#1.offset|) (<= 0 |ULTIMATE.start_main_~i~3#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~hay~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~in_len~0#1|) (= |#NULL.base| 0) (<= 1 |ULTIMATE.start_main_~out_len~0#1|))' at error location [2022-11-26 00:51:59,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:51:59,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:51:59,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 15 [2022-11-26 00:51:59,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400816132] [2022-11-26 00:51:59,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:51:59,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-26 00:51:59,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:59,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-26 00:51:59,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:51:59,015 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 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) [2022-11-26 00:51:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:59,304 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2022-11-26 00:51:59,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:51:59,305 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 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 33 [2022-11-26 00:51:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:59,305 INFO L225 Difference]: With dead ends: 41 [2022-11-26 00:51:59,306 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:51:59,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2022-11-26 00:51:59,307 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:59,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 55 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:51:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:51:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:51:59,309 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) [2022-11-26 00:51:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:51:59,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2022-11-26 00:51:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:59,309 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:51:59,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 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) [2022-11-26 00:51:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:51:59,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:51:59,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-11-26 00:51:59,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-26 00:51:59,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-26 00:51:59,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-26 00:51:59,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-26 00:51:59,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-11-26 00:51:59,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-11-26 00:51:59,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-11-26 00:51:59,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2022-11-26 00:51:59,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2022-11-26 00:51:59,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-26 00:51:59,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-26 00:51:59,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-26 00:51:59,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-26 00:51:59,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:51:59,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:59,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 00:51:59,870 INFO L899 garLoopResultBuilder]: For program point strlenEXIT(lines 507 512) no Hoare annotation was computed. [2022-11-26 00:51:59,871 INFO L899 garLoopResultBuilder]: For program point L509(line 509) no Hoare annotation was computed. [2022-11-26 00:51:59,871 INFO L899 garLoopResultBuilder]: For program point L510-1(line 510) no Hoare annotation was computed. [2022-11-26 00:51:59,871 INFO L902 garLoopResultBuilder]: At program point strlenENTRY(lines 507 512) the Hoare annotation is: true [2022-11-26 00:51:59,871 INFO L902 garLoopResultBuilder]: At program point L510-4(line 510) the Hoare annotation is: true [2022-11-26 00:51:59,871 INFO L899 garLoopResultBuilder]: For program point strlenFINAL(lines 507 512) no Hoare annotation was computed. [2022-11-26 00:51:59,871 INFO L899 garLoopResultBuilder]: For program point L510-5(line 510) no Hoare annotation was computed. [2022-11-26 00:51:59,872 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 544) no Hoare annotation was computed. [2022-11-26 00:51:59,872 INFO L899 garLoopResultBuilder]: For program point L531(line 531) no Hoare annotation was computed. [2022-11-26 00:51:59,872 INFO L899 garLoopResultBuilder]: For program point L556(line 556) no Hoare annotation was computed. [2022-11-26 00:51:59,872 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 552) no Hoare annotation was computed. [2022-11-26 00:51:59,872 INFO L899 garLoopResultBuilder]: For program point L548(line 548) no Hoare annotation was computed. [2022-11-26 00:51:59,872 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 544) no Hoare annotation was computed. [2022-11-26 00:51:59,872 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 00:51:59,873 INFO L895 garLoopResultBuilder]: At program point L532-3(lines 532 537) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~in_len~0#1|) [2022-11-26 00:51:59,873 INFO L902 garLoopResultBuilder]: At program point L557(lines 540 558) the Hoare annotation is: true [2022-11-26 00:51:59,873 INFO L895 garLoopResultBuilder]: At program point L524(lines 513 525) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~in_len~0#1|) [2022-11-26 00:51:59,873 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 552) no Hoare annotation was computed. [2022-11-26 00:51:59,873 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 544) no Hoare annotation was computed. [2022-11-26 00:51:59,874 INFO L899 garLoopResultBuilder]: For program point L533(line 533) no Hoare annotation was computed. [2022-11-26 00:51:59,874 INFO L899 garLoopResultBuilder]: For program point L533-2(lines 533 535) no Hoare annotation was computed. [2022-11-26 00:51:59,874 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 552) no Hoare annotation was computed. [2022-11-26 00:51:59,890 INFO L899 garLoopResultBuilder]: For program point L550(line 550) no Hoare annotation was computed. [2022-11-26 00:51:59,890 INFO L899 garLoopResultBuilder]: For program point L542(line 542) no Hoare annotation was computed. [2022-11-26 00:51:59,891 INFO L895 garLoopResultBuilder]: At program point L534(lines 526 539) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~in_len~0#1|) [2022-11-26 00:51:59,891 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 556) no Hoare annotation was computed. [2022-11-26 00:51:59,891 INFO L899 garLoopResultBuilder]: For program point L518-1(lines 518 523) no Hoare annotation was computed. [2022-11-26 00:51:59,891 INFO L895 garLoopResultBuilder]: At program point L518-3(lines 518 523) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~in_len~0#1|) [2022-11-26 00:51:59,891 INFO L899 garLoopResultBuilder]: For program point L518-4(lines 518 523) no Hoare annotation was computed. [2022-11-26 00:51:59,891 INFO L895 garLoopResultBuilder]: At program point L527(line 527) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~in_len~0#1|) [2022-11-26 00:51:59,891 INFO L899 garLoopResultBuilder]: For program point L527-1(line 527) no Hoare annotation was computed. [2022-11-26 00:51:59,892 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 556) no Hoare annotation was computed. [2022-11-26 00:51:59,892 INFO L899 garLoopResultBuilder]: For program point L552-1(line 552) no Hoare annotation was computed. [2022-11-26 00:51:59,892 INFO L899 garLoopResultBuilder]: For program point L519(line 519) no Hoare annotation was computed. [2022-11-26 00:51:59,892 INFO L899 garLoopResultBuilder]: For program point L552-2(lines 552 555) no Hoare annotation was computed. [2022-11-26 00:51:59,892 INFO L899 garLoopResultBuilder]: For program point L519-1(line 519) no Hoare annotation was computed. [2022-11-26 00:51:59,892 INFO L899 garLoopResultBuilder]: For program point L519-2(lines 519 520) no Hoare annotation was computed. [2022-11-26 00:51:59,892 INFO L899 garLoopResultBuilder]: For program point L552-5(line 552) no Hoare annotation was computed. [2022-11-26 00:51:59,892 INFO L899 garLoopResultBuilder]: For program point L552-6(line 552) no Hoare annotation was computed. [2022-11-26 00:51:59,893 INFO L895 garLoopResultBuilder]: At program point L552-7(lines 552 555) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_#t~malloc20#1.offset| 0)) (.cse1 (<= 0 |ULTIMATE.start_main_~i~2#1|)) (.cse2 (<= 0 |ULTIMATE.start_main_#t~malloc20#1.base|)) (.cse3 (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647)) (.cse4 (<= |ULTIMATE.start_main_~out_len~0#1| 2147483647)) (.cse5 (= (select |#valid| 0) 0)) (.cse6 (= |#NULL.offset| 0)) (.cse7 (<= 0 |ULTIMATE.start_main_~hay~0#1.base|)) (.cse8 (<= 0 |ULTIMATE.start_main_~hay~0#1.offset|)) (.cse9 (<= |ULTIMATE.start_main_~hay~0#1.offset| 0)) (.cse10 (<= 1 |ULTIMATE.start_main_~in_len~0#1|)) (.cse11 (< 0 |#StackHeapBarrier|)) (.cse12 (= |#NULL.base| 0)) (.cse13 (<= 1 |ULTIMATE.start_main_~out_len~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~i~3#1| 0) .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~i~3#1|) .cse11 .cse12 .cse13))) [2022-11-26 00:51:59,893 INFO L899 garLoopResultBuilder]: For program point L552-8(lines 552 555) no Hoare annotation was computed. [2022-11-26 00:51:59,893 INFO L899 garLoopResultBuilder]: For program point L544-1(line 544) no Hoare annotation was computed. [2022-11-26 00:51:59,893 INFO L899 garLoopResultBuilder]: For program point L544-2(lines 544 547) no Hoare annotation was computed. [2022-11-26 00:51:59,893 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 548) no Hoare annotation was computed. [2022-11-26 00:51:59,893 INFO L899 garLoopResultBuilder]: For program point L544-5(line 544) no Hoare annotation was computed. [2022-11-26 00:51:59,893 INFO L899 garLoopResultBuilder]: For program point L544-6(line 544) no Hoare annotation was computed. [2022-11-26 00:51:59,894 INFO L895 garLoopResultBuilder]: At program point L544-7(lines 544 547) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_#t~malloc20#1.offset| 0)) (.cse1 (<= 0 |ULTIMATE.start_main_#t~malloc20#1.base|)) (.cse2 (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647)) (.cse3 (= (select |#valid| 0) 0)) (.cse4 (= |#NULL.offset| 0)) (.cse5 (<= 0 |ULTIMATE.start_main_~hay~0#1.base|)) (.cse6 (<= 0 |ULTIMATE.start_main_~hay~0#1.offset|)) (.cse7 (<= |ULTIMATE.start_main_~hay~0#1.offset| 0)) (.cse8 (<= 1 |ULTIMATE.start_main_~in_len~0#1|)) (.cse9 (< 0 |#StackHeapBarrier|)) (.cse10 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~i~2#1| 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~i~2#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10))) [2022-11-26 00:51:59,894 INFO L899 garLoopResultBuilder]: For program point L544-8(lines 544 547) no Hoare annotation was computed. [2022-11-26 00:51:59,894 INFO L895 garLoopResultBuilder]: At program point L528(line 528) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~in_len~0#1|) [2022-11-26 00:51:59,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW(line 519) no Hoare annotation was computed. [2022-11-26 00:51:59,894 INFO L899 garLoopResultBuilder]: For program point L528-1(line 528) no Hoare annotation was computed. [2022-11-26 00:51:59,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 00:51:59,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 548) no Hoare annotation was computed. [2022-11-26 00:51:59,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW(line 519) no Hoare annotation was computed. [2022-11-26 00:51:59,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 544) no Hoare annotation was computed. [2022-11-26 00:51:59,895 INFO L895 garLoopResultBuilder]: At program point L538(lines 526 539) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~in_len~0#1|) [2022-11-26 00:51:59,895 INFO L899 garLoopResultBuilder]: For program point L530(line 530) no Hoare annotation was computed. [2022-11-26 00:51:59,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 552) no Hoare annotation was computed. [2022-11-26 00:51:59,903 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:59,906 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:51:59,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:51:59 BoogieIcfgContainer [2022-11-26 00:51:59,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:51:59,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:51:59,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:51:59,954 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:51:59,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:51:49" (3/4) ... [2022-11-26 00:51:59,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:51:59,964 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure strlen [2022-11-26 00:51:59,974 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-26 00:51:59,974 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-26 00:51:59,975 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-26 00:51:59,975 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:52:00,039 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:52:00,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:52:00,040 INFO L158 Benchmark]: Toolchain (without parser) took 11940.43ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 90.6MB in the beginning and 157.3MB in the end (delta: -66.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:52:00,040 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 134.2MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:52:00,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.62ms. Allocated memory is still 134.2MB. Free memory was 90.3MB in the beginning and 73.9MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:52:00,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.04ms. Allocated memory is still 134.2MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:52:00,041 INFO L158 Benchmark]: Boogie Preprocessor took 37.78ms. Allocated memory is still 134.2MB. Free memory was 71.8MB in the beginning and 70.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:52:00,042 INFO L158 Benchmark]: RCFGBuilder took 673.66ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 70.0MB in the beginning and 119.4MB in the end (delta: -49.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-11-26 00:52:00,042 INFO L158 Benchmark]: TraceAbstraction took 10578.93ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 118.4MB in the beginning and 161.5MB in the end (delta: -43.1MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. [2022-11-26 00:52:00,043 INFO L158 Benchmark]: Witness Printer took 86.09ms. Allocated memory is still 195.0MB. Free memory was 161.5MB in the beginning and 157.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:52:00,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 134.2MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 495.62ms. Allocated memory is still 134.2MB. Free memory was 90.3MB in the beginning and 73.9MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.04ms. Allocated memory is still 134.2MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.78ms. Allocated memory is still 134.2MB. Free memory was 71.8MB in the beginning and 70.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 673.66ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 70.0MB in the beginning and 119.4MB in the end (delta: -49.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10578.93ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 118.4MB in the beginning and 161.5MB in the end (delta: -43.1MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. * Witness Printer took 86.09ms. Allocated memory is still 195.0MB. Free memory was 161.5MB in the beginning and 157.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 544]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 544]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 544]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 544]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 548]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 548]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 552]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 552]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 552]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 552]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 556]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 556]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 519]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 519]: 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 2 procedures, 58 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 10.5s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 208 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206 mSDsluCounter, 498 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 304 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 194 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 177 SyntacticMatches, 5 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 61, 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, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 18 PreInvPairs, 33 NumberOfFragments, 200 HoareAnnotationTreeSize, 18 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 528 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 226 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 648 SizeOfPredicates, 11 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 92/196 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 22, TOOLS_POST_TIME: 0.5s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 22, TOOLS_QUANTIFIERELIM_TIME: 0.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 38, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 54, DAG_COMPRESSION_RETAINED_NODES: 26, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold - InvariantResult [Line: 513]: Loop Invariant Derived loop invariant: 1 <= in_len - InvariantResult [Line: 552]: Loop Invariant Derived loop invariant: ((((((((((((((__builtin_alloca (in_len) == 0 && 0 <= i) && 0 <= __builtin_alloca (in_len)) && in_len <= 2147483647) && out_len <= 2147483647) && \valid[0] == 0) && #NULL == 0) && 0 <= hay) && 0 <= hay) && hay <= 0) && 1 <= in_len) && i == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && 1 <= out_len) || ((((((((((((((__builtin_alloca (in_len) == 0 && 0 <= i) && 0 <= __builtin_alloca (in_len)) && in_len <= 2147483647) && out_len <= 2147483647) && \valid[0] == 0) && #NULL == 0) && 0 <= hay) && 0 <= hay) && hay <= 0) && 1 <= in_len) && 1 <= i) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && 1 <= out_len) - InvariantResult [Line: 526]: Loop Invariant Derived loop invariant: 1 <= in_len - InvariantResult [Line: 540]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 518]: Loop Invariant Derived loop invariant: 1 <= in_len - InvariantResult [Line: 532]: Loop Invariant Derived loop invariant: 1 <= in_len - InvariantResult [Line: 510]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 544]: Loop Invariant Derived loop invariant: (((((((((((__builtin_alloca (in_len) == 0 && 0 <= __builtin_alloca (in_len)) && i == 0) && in_len <= 2147483647) && \valid[0] == 0) && #NULL == 0) && 0 <= hay) && 0 <= hay) && hay <= 0) && 1 <= in_len) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((__builtin_alloca (in_len) == 0 && 0 <= __builtin_alloca (in_len)) && in_len <= 2147483647) && 1 <= i) && \valid[0] == 0) && #NULL == 0) && 0 <= hay) && 0 <= hay) && hay <= 0) && 1 <= in_len) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 526]: Loop Invariant Derived loop invariant: 1 <= in_len RESULT: Ultimate proved your program to be correct! [2022-11-26 00:52:00,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0537656-d9af-42e0-ac5e-fb1ac25c64e0/bin/utaipan-ByfvJB40ur/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