./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/reducercommutativity/sep05-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sep05-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:26:05,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:26:05,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:26:05,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:26:05,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:26:05,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:26:05,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:26:05,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:26:05,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:26:05,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:26:05,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:26:05,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:26:05,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:26:05,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:26:05,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:26:05,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:26:05,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:26:05,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:26:05,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:26:05,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:26:05,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:26:05,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:26:05,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:26:05,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:26:05,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:26:05,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:26:05,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:26:05,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:26:05,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:26:05,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:26:05,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:26:05,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:26:05,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:26:05,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:26:05,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:26:05,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:26:05,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:26:05,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:26:05,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:26:05,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:26:05,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:26:05,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 05:26:05,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:26:05,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:26:05,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:26:05,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:26:05,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:26:05,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:26:05,441 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:26:05,441 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:26:05,441 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:26:05,441 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:26:05,442 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:26:05,442 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:26:05,442 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:26:05,442 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:26:05,442 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:26:05,442 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:26:05,442 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:26:05,442 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:26:05,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:26:05,443 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:26:05,443 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:26:05,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:26:05,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:26:05,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:26:05,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:26:05,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:26:05,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:26:05,444 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 05:26:05,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:26:05,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:26:05,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:26:05,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:26:05,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:26:05,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:26:05,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:26:05,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:26:05,445 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:26:05,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:26:05,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:26:05,446 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:26:05,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:26:05,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:26:05,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:26:05,446 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_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 [2022-12-14 05:26:05,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:26:05,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:26:05,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:26:05,621 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:26:05,621 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:26:05,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/reducercommutativity/sep05-1.i [2022-12-14 05:26:08,271 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:26:08,424 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:26:08,425 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/sv-benchmarks/c/reducercommutativity/sep05-1.i [2022-12-14 05:26:08,429 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/data/1f356d252/b5d58ad94a7240dcbde956089d0bfd70/FLAG052948927 [2022-12-14 05:26:08,439 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/data/1f356d252/b5d58ad94a7240dcbde956089d0bfd70 [2022-12-14 05:26:08,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:26:08,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:26:08,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:26:08,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:26:08,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:26:08,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e489bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08, skipping insertion in model container [2022-12-14 05:26:08,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:26:08,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:26:08,616 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/sv-benchmarks/c/reducercommutativity/sep05-1.i[1287,1300] [2022-12-14 05:26:08,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:26:08,625 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:26:08,645 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/sv-benchmarks/c/reducercommutativity/sep05-1.i[1287,1300] [2022-12-14 05:26:08,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:26:08,660 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:26:08,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08 WrapperNode [2022-12-14 05:26:08,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:26:08,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:26:08,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:26:08,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:26:08,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,695 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-12-14 05:26:08,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:26:08,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:26:08,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:26:08,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:26:08,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:26:08,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:26:08,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:26:08,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:26:08,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (1/1) ... [2022-12-14 05:26:08,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:26:08,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:08,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:26:08,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:26:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:26:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:26:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:26:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:26:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:26:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:26:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:26:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:26:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2022-12-14 05:26:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2022-12-14 05:26:08,850 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:26:08,852 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:26:09,009 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:26:09,042 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:26:09,042 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 05:26:09,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:26:09 BoogieIcfgContainer [2022-12-14 05:26:09,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:26:09,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:26:09,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:26:09,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:26:09,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:26:08" (1/3) ... [2022-12-14 05:26:09,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd9500c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:26:09, skipping insertion in model container [2022-12-14 05:26:09,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:26:08" (2/3) ... [2022-12-14 05:26:09,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd9500c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:26:09, skipping insertion in model container [2022-12-14 05:26:09,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:26:09" (3/3) ... [2022-12-14 05:26:09,055 INFO L112 eAbstractionObserver]: Analyzing ICFG sep05-1.i [2022-12-14 05:26:09,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:26:09,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-14 05:26:09,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:26:09,126 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;@1055c757, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:26:09,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-14 05:26:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:26:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 05:26:09,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:09,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 05:26:09,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash 128911, now seen corresponding path program 1 times [2022-12-14 05:26:09,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:09,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688128345] [2022-12-14 05:26:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:09,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:09,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:09,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688128345] [2022-12-14 05:26:09,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688128345] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:09,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:26:09,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:26:09,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976058843] [2022-12-14 05:26:09,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:09,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:26:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:26:09,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:26:09,359 INFO L87 Difference]: Start difference. First operand has 39 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:09,424 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2022-12-14 05:26:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:26:09,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 05:26:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:09,432 INFO L225 Difference]: With dead ends: 77 [2022-12-14 05:26:09,432 INFO L226 Difference]: Without dead ends: 40 [2022-12-14 05:26:09,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:26:09,436 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:09,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-14 05:26:09,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-12-14 05:26:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-12-14 05:26:09,461 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 3 [2022-12-14 05:26:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:09,461 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-12-14 05:26:09,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-12-14 05:26:09,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:26:09,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:09,462 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 05:26:09,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:26:09,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash -454531508, now seen corresponding path program 1 times [2022-12-14 05:26:09,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:09,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532858185] [2022-12-14 05:26:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:09,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:09,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:09,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532858185] [2022-12-14 05:26:09,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532858185] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:09,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115760114] [2022-12-14 05:26:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:09,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:09,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:09,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:09,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:26:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:09,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:09,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:09,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:26:09,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115760114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:09,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:26:09,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-12-14 05:26:09,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996656329] [2022-12-14 05:26:09,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:09,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:26:09,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:26:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:26:09,648 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2022-12-14 05:26:09,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:09,679 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-12-14 05:26:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:26:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 [2022-12-14 05:26:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:09,680 INFO L225 Difference]: With dead ends: 40 [2022-12-14 05:26:09,680 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 05:26:09,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:26:09,681 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:09,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:09,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 05:26:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-14 05:26:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.625) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-12-14 05:26:09,686 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 6 [2022-12-14 05:26:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:09,686 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-12-14 05:26:09,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2022-12-14 05:26:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-12-14 05:26:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 05:26:09,686 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:09,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-12-14 05:26:09,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:26:09,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:09,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:09,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1205574814, now seen corresponding path program 1 times [2022-12-14 05:26:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:09,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093204941] [2022-12-14 05:26:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:26:09,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:09,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093204941] [2022-12-14 05:26:09,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093204941] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:09,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:26:09,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:26:09,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772901147] [2022-12-14 05:26:09,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:09,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:26:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:26:09,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:26:09,947 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:09,966 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-12-14 05:26:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:26:09,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 05:26:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:09,967 INFO L225 Difference]: With dead ends: 39 [2022-12-14 05:26:09,967 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 05:26:09,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:26:09,969 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:09,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 05:26:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-12-14 05:26:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-12-14 05:26:09,974 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 7 [2022-12-14 05:26:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:09,975 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-12-14 05:26:09,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-12-14 05:26:09,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 05:26:09,975 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:09,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:09,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:26:09,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:09,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:09,976 INFO L85 PathProgramCache]: Analyzing trace with hash -518522051, now seen corresponding path program 1 times [2022-12-14 05:26:09,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:09,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222390721] [2022-12-14 05:26:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:09,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:10,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:10,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222390721] [2022-12-14 05:26:10,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222390721] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:10,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189917010] [2022-12-14 05:26:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:10,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:10,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:10,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:10,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:26:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:10,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:10,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:10,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:10,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189917010] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:10,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [419559992] [2022-12-14 05:26:10,149 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 05:26:10,149 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:10,152 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:10,156 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:10,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:10,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:10,224 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:10,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:10,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:10,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:26:10,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:10,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:10,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:10,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:10,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:10,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:10,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:10,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:10,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:10,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:10,491 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-12-14 05:26:10,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-12-14 05:26:10,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:10,600 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:10,609 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:10,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [419559992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:10,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:10,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2022-12-14 05:26:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651300450] [2022-12-14 05:26:10,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:10,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 05:26:10,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:10,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 05:26:10,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-12-14 05:26:10,887 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:11,126 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2022-12-14 05:26:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:26:11,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 05:26:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:11,128 INFO L225 Difference]: With dead ends: 74 [2022-12-14 05:26:11,128 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 05:26:11,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:26:11,129 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:11,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 110 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 05:26:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-12-14 05:26:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-12-14 05:26:11,138 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 10 [2022-12-14 05:26:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:11,138 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-12-14 05:26:11,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-12-14 05:26:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 05:26:11,139 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:11,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:11,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:26:11,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:11,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:11,341 INFO L85 PathProgramCache]: Analyzing trace with hash -518521859, now seen corresponding path program 1 times [2022-12-14 05:26:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:11,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759247520] [2022-12-14 05:26:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:11,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:11,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759247520] [2022-12-14 05:26:11,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759247520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:11,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953455334] [2022-12-14 05:26:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:11,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:11,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:11,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:11,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:26:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:11,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:11,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:11,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:11,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953455334] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:11,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [975513020] [2022-12-14 05:26:11,580 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 05:26:11,580 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:11,581 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:11,581 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:11,581 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:11,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:11,597 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:11,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:11,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:11,617 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:11,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:11,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:11,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:11,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:11,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:11,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:11,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:11,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:11,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:11,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:11,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:11,752 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-12-14 05:26:11,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-12-14 05:26:11,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:11,826 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:11,835 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:12,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [975513020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:12,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:12,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2022-12-14 05:26:12,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380613704] [2022-12-14 05:26:12,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:12,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 05:26:12,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:12,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 05:26:12,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-12-14 05:26:12,081 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:12,268 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-12-14 05:26:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:26:12,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 05:26:12,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:12,269 INFO L225 Difference]: With dead ends: 44 [2022-12-14 05:26:12,269 INFO L226 Difference]: Without dead ends: 42 [2022-12-14 05:26:12,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:26:12,270 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:12,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 83 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-14 05:26:12,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-12-14 05:26:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 38 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-12-14 05:26:12,278 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 10 [2022-12-14 05:26:12,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:12,278 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-12-14 05:26:12,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:12,278 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-12-14 05:26:12,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 05:26:12,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:12,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:12,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:26:12,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:12,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:12,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:12,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1707044908, now seen corresponding path program 1 times [2022-12-14 05:26:12,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:12,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925145945] [2022-12-14 05:26:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:12,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:12,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925145945] [2022-12-14 05:26:12,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925145945] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306201695] [2022-12-14 05:26:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:12,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:12,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:12,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:12,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:26:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:12,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:12,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:12,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:12,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306201695] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:12,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [697619732] [2022-12-14 05:26:12,710 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 05:26:12,710 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:12,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:12,710 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:12,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:12,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:12,728 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:12,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:12,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:12,745 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:12,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:12,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:12,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:12,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:12,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:12,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:12,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:12,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:12,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:12,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:12,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:12,898 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-12-14 05:26:12,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-12-14 05:26:12,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:12,978 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:12,994 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:13,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [697619732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:13,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:13,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 18 [2022-12-14 05:26:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369245046] [2022-12-14 05:26:13,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:13,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 05:26:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 05:26:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-12-14 05:26:13,260 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:13,422 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-12-14 05:26:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 05:26:13,422 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 05:26:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:13,423 INFO L225 Difference]: With dead ends: 47 [2022-12-14 05:26:13,423 INFO L226 Difference]: Without dead ends: 45 [2022-12-14 05:26:13,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:26:13,424 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:13,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 99 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-14 05:26:13,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-12-14 05:26:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-12-14 05:26:13,428 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 13 [2022-12-14 05:26:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:13,428 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-12-14 05:26:13,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:13,429 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-12-14 05:26:13,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 05:26:13,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:13,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:13,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:26:13,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 05:26:13,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1712770546, now seen corresponding path program 1 times [2022-12-14 05:26:13,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:13,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652317418] [2022-12-14 05:26:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:13,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652317418] [2022-12-14 05:26:13,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652317418] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903835500] [2022-12-14 05:26:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:13,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:13,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:13,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:13,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:26:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:13,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:13,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:13,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:26:13,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903835500] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:13,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732077357] [2022-12-14 05:26:13,774 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 05:26:13,774 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:13,774 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:13,774 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:13,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:13,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:13,793 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:13,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:13,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:13,812 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:13,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:13,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:13,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:13,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:13,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-14 05:26:13,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:13,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:13,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:13,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:13,922 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-14 05:26:13,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 247 treesize of output 211 [2022-12-14 05:26:13,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:13,973 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:13,986 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:14,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [732077357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:14,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:14,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 18 [2022-12-14 05:26:14,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188429702] [2022-12-14 05:26:14,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:14,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 05:26:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 05:26:14,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-12-14 05:26:14,288 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:14,462 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-12-14 05:26:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 05:26:14,462 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 05:26:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:14,463 INFO L225 Difference]: With dead ends: 50 [2022-12-14 05:26:14,463 INFO L226 Difference]: Without dead ends: 48 [2022-12-14 05:26:14,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:26:14,464 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:14,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 107 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-14 05:26:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-12-14 05:26:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-12-14 05:26:14,468 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 13 [2022-12-14 05:26:14,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:14,468 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-12-14 05:26:14,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-12-14 05:26:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 05:26:14,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:14,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:14,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:26:14,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:14,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:14,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1691798117, now seen corresponding path program 1 times [2022-12-14 05:26:14,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:14,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880549266] [2022-12-14 05:26:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:14,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:26:14,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:14,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880549266] [2022-12-14 05:26:14,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880549266] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:14,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162786006] [2022-12-14 05:26:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:14,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:14,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:14,739 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:14,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:26:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:14,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:14,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:26:14,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:26:14,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162786006] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:14,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732445446] [2022-12-14 05:26:14,802 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 05:26:14,802 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:14,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:14,803 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:14,803 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:14,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:14,820 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:14,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:14,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:14,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:26:14,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:14,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:14,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:14,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-14 05:26:14,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:14,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:14,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:14,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:14,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:14,942 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-12-14 05:26:14,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-12-14 05:26:14,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:15,012 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:15,156 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:15,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [732445446] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:15,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:15,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 19 [2022-12-14 05:26:15,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561652774] [2022-12-14 05:26:15,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:15,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 05:26:15,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:15,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 05:26:15,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:26:15,838 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:16,013 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2022-12-14 05:26:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 05:26:16,014 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 05:26:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:16,015 INFO L225 Difference]: With dead ends: 64 [2022-12-14 05:26:16,015 INFO L226 Difference]: Without dead ends: 61 [2022-12-14 05:26:16,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:26:16,016 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 46 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:16,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 80 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:16,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-14 05:26:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2022-12-14 05:26:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 48 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-12-14 05:26:16,023 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 17 [2022-12-14 05:26:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:16,023 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-12-14 05:26:16,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-12-14 05:26:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 05:26:16,024 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:16,024 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:16,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:26:16,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:16,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1691797925, now seen corresponding path program 1 times [2022-12-14 05:26:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:16,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486722029] [2022-12-14 05:26:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:16,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:26:16,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:16,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486722029] [2022-12-14 05:26:16,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486722029] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:16,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420824825] [2022-12-14 05:26:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:16,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:16,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:16,294 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:16,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:26:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:16,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:16,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:26:16,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:26:16,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420824825] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:16,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941342342] [2022-12-14 05:26:16,360 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:26:16,360 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:16,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:16,361 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:16,361 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:16,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:16,378 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:16,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:16,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:16,396 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:16,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:16,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:16,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:16,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:16,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:16,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:16,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:16,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:16,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:16,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:16,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:16,541 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-12-14 05:26:16,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-12-14 05:26:16,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:16,614 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:16,768 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:17,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1941342342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:17,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:17,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4, 4] total 20 [2022-12-14 05:26:17,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555873698] [2022-12-14 05:26:17,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:17,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 05:26:17,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 05:26:17,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:26:17,178 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:17,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:17,356 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2022-12-14 05:26:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:26:17,356 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 05:26:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:17,357 INFO L225 Difference]: With dead ends: 58 [2022-12-14 05:26:17,357 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 05:26:17,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-12-14 05:26:17,357 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:17,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 65 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 05:26:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2022-12-14 05:26:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 49 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2022-12-14 05:26:17,362 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 17 [2022-12-14 05:26:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:17,362 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2022-12-14 05:26:17,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:17,362 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-12-14 05:26:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 05:26:17,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:17,367 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:17,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:26:17,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:17,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:17,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1049608095, now seen corresponding path program 1 times [2022-12-14 05:26:17,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:17,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820300501] [2022-12-14 05:26:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:17,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:26:17,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:17,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820300501] [2022-12-14 05:26:17,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820300501] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:17,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087514058] [2022-12-14 05:26:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:17,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:17,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:17,631 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:17,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:26:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:17,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:17,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:26:17,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:26:17,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087514058] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:17,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1246301017] [2022-12-14 05:26:17,696 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:26:17,696 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:17,697 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:17,697 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:17,697 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:17,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:17,714 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:17,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:17,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:17,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:26:17,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:17,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:17,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:17,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-14 05:26:17,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:17,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:17,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:17,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:17,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:17,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:17,822 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-12-14 05:26:17,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 237 treesize of output 218 [2022-12-14 05:26:17,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:17,870 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:18,039 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:19,149 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1811#(and (< sep_~i~0 5) (<= 0 |sep_#in~x.base|) (<= 1 sep_~i~0) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= (ite (and (< (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 0) (not (= (mod (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 2) 0))) (+ (- 2) (mod (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 2)) (mod (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 2)) 0) (= |#NULL.offset| 0) (not (<= 0 (+ 9223372036854775809 |sep_#t~post3|))) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:19,149 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:19,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:19,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-12-14 05:26:19,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052398484] [2022-12-14 05:26:19,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:19,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 05:26:19,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 05:26:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-12-14 05:26:19,151 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:19,195 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-12-14 05:26:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:26:19,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 05:26:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:19,196 INFO L225 Difference]: With dead ends: 107 [2022-12-14 05:26:19,196 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 05:26:19,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-12-14 05:26:19,197 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:19,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 194 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 05:26:19,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-12-14 05:26:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2022-12-14 05:26:19,204 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 17 [2022-12-14 05:26:19,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:19,204 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2022-12-14 05:26:19,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2022-12-14 05:26:19,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 05:26:19,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:19,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:19,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 05:26:19,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 05:26:19,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1295180609, now seen corresponding path program 2 times [2022-12-14 05:26:19,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:19,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516497096] [2022-12-14 05:26:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:19,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:26:19,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516497096] [2022-12-14 05:26:19,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516497096] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776874723] [2022-12-14 05:26:19,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:26:19,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:19,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:19,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:19,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:26:19,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 05:26:19,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:26:19,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:19,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:26:19,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:26:19,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776874723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:19,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:26:19,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-12-14 05:26:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799768119] [2022-12-14 05:26:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:19,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:26:19,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:19,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:26:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:26:19,569 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:19,601 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-12-14 05:26:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:26:19,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 05:26:19,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:19,602 INFO L225 Difference]: With dead ends: 59 [2022-12-14 05:26:19,602 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 05:26:19,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:26:19,603 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:19,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 93 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:19,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 05:26:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-12-14 05:26:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 54 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-12-14 05:26:19,610 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 23 [2022-12-14 05:26:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:19,610 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-12-14 05:26:19,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-12-14 05:26:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 05:26:19,611 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:19,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:19,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 05:26:19,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:19,812 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1295180801, now seen corresponding path program 1 times [2022-12-14 05:26:19,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:19,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720014040] [2022-12-14 05:26:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:19,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:26:19,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720014040] [2022-12-14 05:26:19,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720014040] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545496053] [2022-12-14 05:26:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:19,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:19,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:19,874 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:19,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:26:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:19,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:26:19,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:26:19,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:26:20,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545496053] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:20,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [167147684] [2022-12-14 05:26:20,010 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 05:26:20,010 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:20,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:20,011 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:20,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:20,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:20,029 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:20,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:20,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:20,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:26:20,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:20,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:20,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:20,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:20,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:20,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:20,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:20,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:20,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:20,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:20,167 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-12-14 05:26:20,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-12-14 05:26:20,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:20,248 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:20,339 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:20,755 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2393#(and (not (<= 0 (+ 9223372036854775807 |sep_#t~post4|))) (<= 0 |sep_#in~x.base|) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:20,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:20,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:20,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2022-12-14 05:26:20,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980508318] [2022-12-14 05:26:20,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:20,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 05:26:20,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 05:26:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-12-14 05:26:20,756 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:20,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:20,873 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2022-12-14 05:26:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 05:26:20,873 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 05:26:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:20,874 INFO L225 Difference]: With dead ends: 120 [2022-12-14 05:26:20,874 INFO L226 Difference]: Without dead ends: 73 [2022-12-14 05:26:20,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-12-14 05:26:20,875 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:20,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 292 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-14 05:26:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-12-14 05:26:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 62 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2022-12-14 05:26:20,883 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 23 [2022-12-14 05:26:20,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:20,883 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2022-12-14 05:26:20,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:20,884 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2022-12-14 05:26:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 05:26:20,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:20,885 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:20,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 05:26:21,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 05:26:21,087 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:21,088 INFO L85 PathProgramCache]: Analyzing trace with hash 804886636, now seen corresponding path program 1 times [2022-12-14 05:26:21,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:21,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960194036] [2022-12-14 05:26:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:21,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:21,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:21,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960194036] [2022-12-14 05:26:21,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960194036] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:21,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555126592] [2022-12-14 05:26:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:21,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:21,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:21,172 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:21,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 05:26:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:21,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:26:21,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:21,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:21,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555126592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1401613272] [2022-12-14 05:26:21,270 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 05:26:21,270 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:21,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:21,271 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:21,271 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:21,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:21,288 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:21,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:21,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:21,306 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:21,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:21,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:21,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:21,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:21,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:21,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:21,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:21,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:21,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:21,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:21,408 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-12-14 05:26:21,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-12-14 05:26:21,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:21,481 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:21,628 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:22,046 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2826#(and (<= 0 |sep_#in~x.base|) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (< 9223372036854775806 |sep_#t~post3|) (= |#NULL.offset| 0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:22,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:22,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:22,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 05:26:22,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818604941] [2022-12-14 05:26:22,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:22,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 05:26:22,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 05:26:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-12-14 05:26:22,047 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:22,109 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2022-12-14 05:26:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:26:22,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-14 05:26:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:22,110 INFO L225 Difference]: With dead ends: 100 [2022-12-14 05:26:22,110 INFO L226 Difference]: Without dead ends: 99 [2022-12-14 05:26:22,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-12-14 05:26:22,111 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 29 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:22,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 193 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-14 05:26:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2022-12-14 05:26:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 74 states have (on average 1.337837837837838) internal successors, (99), 83 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2022-12-14 05:26:22,117 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 30 [2022-12-14 05:26:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:22,117 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2022-12-14 05:26:22,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2022-12-14 05:26:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 05:26:22,117 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:22,117 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:22,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 05:26:22,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 05:26:22,319 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 804892594, now seen corresponding path program 1 times [2022-12-14 05:26:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:22,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759682325] [2022-12-14 05:26:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:22,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:22,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:22,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759682325] [2022-12-14 05:26:22,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759682325] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:22,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079396204] [2022-12-14 05:26:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:22,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:22,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:22,400 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:22,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 05:26:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:22,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:26:22,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:22,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:22,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079396204] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:22,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1312214281] [2022-12-14 05:26:22,491 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 05:26:22,491 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:22,491 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:22,491 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:22,491 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:22,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:22,505 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:22,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:22,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:22,521 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:22,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:22,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:22,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:22,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:22,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:22,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:22,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:22,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:22,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:22,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:22,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:22,606 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-12-14 05:26:22,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-12-14 05:26:22,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:22,655 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:22,768 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:23,308 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3253#(and (<= 0 |sep_#in~x.base|) (< 9223372036854775808 |sep_#t~post4|) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:23,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:23,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:23,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 05:26:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704152108] [2022-12-14 05:26:23,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:23,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 05:26:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 05:26:23,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-12-14 05:26:23,309 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:23,439 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2022-12-14 05:26:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 05:26:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-14 05:26:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:23,441 INFO L225 Difference]: With dead ends: 117 [2022-12-14 05:26:23,441 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 05:26:23,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-12-14 05:26:23,442 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 62 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:23,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 205 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 05:26:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2022-12-14 05:26:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.3707865168539326) internal successors, (122), 97 states have internal predecessors, (122), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2022-12-14 05:26:23,449 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 30 [2022-12-14 05:26:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:23,449 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2022-12-14 05:26:23,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2022-12-14 05:26:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 05:26:23,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:23,450 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:23,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 05:26:23,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 05:26:23,650 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:23,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash 407673108, now seen corresponding path program 1 times [2022-12-14 05:26:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:23,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968035930] [2022-12-14 05:26:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:23,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:23,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:23,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968035930] [2022-12-14 05:26:23,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968035930] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:23,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711315383] [2022-12-14 05:26:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:23,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:23,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:23,711 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:23,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 05:26:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:23,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:26:23,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:23,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:26:23,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711315383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:23,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:26:23,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 05:26:23,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374583641] [2022-12-14 05:26:23,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:23,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:26:23,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:23,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:26:23,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:26:23,784 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:23,819 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2022-12-14 05:26:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:26:23,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-12-14 05:26:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:23,820 INFO L225 Difference]: With dead ends: 101 [2022-12-14 05:26:23,820 INFO L226 Difference]: Without dead ends: 100 [2022-12-14 05:26:23,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:26:23,821 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 16 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:23,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 136 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:23,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-12-14 05:26:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-12-14 05:26:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 96 states have internal predecessors, (119), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2022-12-14 05:26:23,830 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 32 [2022-12-14 05:26:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:23,830 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2022-12-14 05:26:23,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2022-12-14 05:26:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 05:26:23,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:23,831 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:23,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 05:26:24,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:24,032 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash -247035425, now seen corresponding path program 1 times [2022-12-14 05:26:24,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:24,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928237743] [2022-12-14 05:26:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:24,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 05:26:24,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928237743] [2022-12-14 05:26:24,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928237743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:24,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:26:24,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:26:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716166548] [2022-12-14 05:26:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:24,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:26:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:24,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:26:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:26:24,110 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:24,133 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2022-12-14 05:26:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:26:24,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-12-14 05:26:24,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:24,134 INFO L225 Difference]: With dead ends: 100 [2022-12-14 05:26:24,134 INFO L226 Difference]: Without dead ends: 99 [2022-12-14 05:26:24,135 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 [2022-12-14 05:26:24,135 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:24,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 69 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-14 05:26:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-12-14 05:26:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 89 states have (on average 1.303370786516854) internal successors, (116), 95 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2022-12-14 05:26:24,144 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 33 [2022-12-14 05:26:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:24,144 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2022-12-14 05:26:24,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2022-12-14 05:26:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 05:26:24,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:24,145 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:24,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 05:26:24,146 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:24,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:24,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2141694787, now seen corresponding path program 1 times [2022-12-14 05:26:24,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:24,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947252918] [2022-12-14 05:26:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:24,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:24,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:24,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947252918] [2022-12-14 05:26:24,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947252918] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:24,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025205341] [2022-12-14 05:26:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:24,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:24,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:24,230 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:24,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 05:26:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:24,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 05:26:24,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 05:26:24,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 05:26:24,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025205341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:24,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2071570336] [2022-12-14 05:26:24,349 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 05:26:24,349 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:24,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:24,349 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:24,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:24,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:24,359 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:24,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:24,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:24,372 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:24,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:24,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:24,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:24,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:24,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-14 05:26:24,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:24,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:24,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:24,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:24,459 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-14 05:26:24,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 247 treesize of output 211 [2022-12-14 05:26:24,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:24,495 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:24,650 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:25,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4355#(and (not (<= 0 (+ 9223372036854775807 |sep_#t~post4|))) (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:25,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:25,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:25,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-12-14 05:26:25,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919603349] [2022-12-14 05:26:25,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:25,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 05:26:25,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:25,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 05:26:25,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:26:25,375 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:25,531 INFO L93 Difference]: Finished difference Result 184 states and 235 transitions. [2022-12-14 05:26:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 05:26:25,532 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-12-14 05:26:25,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:25,532 INFO L225 Difference]: With dead ends: 184 [2022-12-14 05:26:25,532 INFO L226 Difference]: Without dead ends: 183 [2022-12-14 05:26:25,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 05:26:25,533 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:25,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 219 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-12-14 05:26:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 150. [2022-12-14 05:26:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 140 states have (on average 1.3) internal successors, (182), 146 states have internal predecessors, (182), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 187 transitions. [2022-12-14 05:26:25,540 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 187 transitions. Word has length 36 [2022-12-14 05:26:25,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:25,540 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 187 transitions. [2022-12-14 05:26:25,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 187 transitions. [2022-12-14 05:26:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:26:25,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:25,541 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:25,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 05:26:25,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 05:26:25,742 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:25,743 INFO L85 PathProgramCache]: Analyzing trace with hash 457063696, now seen corresponding path program 1 times [2022-12-14 05:26:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:25,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852585794] [2022-12-14 05:26:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:25,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:25,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852585794] [2022-12-14 05:26:25,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852585794] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:25,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568835314] [2022-12-14 05:26:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:25,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:25,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:25,866 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:25,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 05:26:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:25,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 05:26:25,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 05:26:25,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 05:26:25,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568835314] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:25,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1766825404] [2022-12-14 05:26:25,998 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 05:26:25,998 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:25,998 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:25,999 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:25,999 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,013 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:26,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:26,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,029 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:26,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:26,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:26,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:26,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:26,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:26,130 INFO L321 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2022-12-14 05:26:26,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 231 treesize of output 216 [2022-12-14 05:26:26,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:26,203 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:26,335 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:27,042 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5012#(and (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (< 9223372036854775806 |sep_#t~post3|) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:27,043 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:27,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:27,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-12-14 05:26:27,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018939755] [2022-12-14 05:26:27,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:27,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 05:26:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 05:26:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:26:27,044 INFO L87 Difference]: Start difference. First operand 150 states and 187 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:27,233 INFO L93 Difference]: Finished difference Result 269 states and 342 transitions. [2022-12-14 05:26:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 05:26:27,233 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-12-14 05:26:27,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:27,234 INFO L225 Difference]: With dead ends: 269 [2022-12-14 05:26:27,234 INFO L226 Difference]: Without dead ends: 268 [2022-12-14 05:26:27,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 05:26:27,234 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 40 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:27,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 286 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:27,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-12-14 05:26:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 194. [2022-12-14 05:26:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 1.2880434782608696) internal successors, (237), 190 states have internal predecessors, (237), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 242 transitions. [2022-12-14 05:26:27,243 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 242 transitions. Word has length 37 [2022-12-14 05:26:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:27,243 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 242 transitions. [2022-12-14 05:26:27,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 242 transitions. [2022-12-14 05:26:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 05:26:27,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:27,244 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:27,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 05:26:27,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 05:26:27,445 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash 982928304, now seen corresponding path program 1 times [2022-12-14 05:26:27,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:27,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863534382] [2022-12-14 05:26:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:27,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 05:26:27,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863534382] [2022-12-14 05:26:27,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863534382] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844934444] [2022-12-14 05:26:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:27,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:27,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:27,560 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:27,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 05:26:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:27,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:26:27,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-14 05:26:27,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:26:27,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844934444] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:27,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:26:27,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 05:26:27,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303318712] [2022-12-14 05:26:27,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:27,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:26:27,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:27,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:26:27,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:26:27,632 INFO L87 Difference]: Start difference. First operand 194 states and 242 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:26:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:27,657 INFO L93 Difference]: Finished difference Result 202 states and 252 transitions. [2022-12-14 05:26:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:26:27,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-12-14 05:26:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:27,658 INFO L225 Difference]: With dead ends: 202 [2022-12-14 05:26:27,658 INFO L226 Difference]: Without dead ends: 201 [2022-12-14 05:26:27,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:26:27,658 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:27,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 51 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-12-14 05:26:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 196. [2022-12-14 05:26:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 186 states have (on average 1.2903225806451613) internal successors, (240), 192 states have internal predecessors, (240), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 245 transitions. [2022-12-14 05:26:27,668 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 245 transitions. Word has length 43 [2022-12-14 05:26:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:27,668 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 245 transitions. [2022-12-14 05:26:27,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:26:27,668 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 245 transitions. [2022-12-14 05:26:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-14 05:26:27,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:27,668 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:27,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 05:26:27,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:27,869 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:27,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:27,869 INFO L85 PathProgramCache]: Analyzing trace with hash 406006417, now seen corresponding path program 1 times [2022-12-14 05:26:27,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:27,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743574884] [2022-12-14 05:26:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:27,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 05:26:27,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:27,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743574884] [2022-12-14 05:26:27,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743574884] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:27,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083215712] [2022-12-14 05:26:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:27,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:27,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:27,927 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:27,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 05:26:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:27,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:26:27,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-14 05:26:27,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:26:27,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083215712] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:27,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:26:27,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 05:26:27,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951364923] [2022-12-14 05:26:27,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:27,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:26:27,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:28,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:26:28,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:26:28,000 INFO L87 Difference]: Start difference. First operand 196 states and 245 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:26:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:28,025 INFO L93 Difference]: Finished difference Result 366 states and 459 transitions. [2022-12-14 05:26:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:26:28,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-12-14 05:26:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:28,026 INFO L225 Difference]: With dead ends: 366 [2022-12-14 05:26:28,026 INFO L226 Difference]: Without dead ends: 201 [2022-12-14 05:26:28,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:26:28,027 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:28,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 52 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-12-14 05:26:28,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2022-12-14 05:26:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 187 states have (on average 1.2834224598930482) internal successors, (240), 193 states have internal predecessors, (240), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 245 transitions. [2022-12-14 05:26:28,040 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 245 transitions. Word has length 44 [2022-12-14 05:26:28,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:28,041 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 245 transitions. [2022-12-14 05:26:28,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:26:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 245 transitions. [2022-12-14 05:26:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 05:26:28,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:28,042 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 05:26:28,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 05:26:28,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:28,242 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash -115232927, now seen corresponding path program 2 times [2022-12-14 05:26:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:28,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581169029] [2022-12-14 05:26:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:28,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:28,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581169029] [2022-12-14 05:26:28,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581169029] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:28,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937681828] [2022-12-14 05:26:28,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:26:28,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:28,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:28,361 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:28,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 05:26:28,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 05:26:28,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:26:28,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:26:28,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:28,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:28,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937681828] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:28,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1229856586] [2022-12-14 05:26:28,550 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 05:26:28,550 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:28,550 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:28,550 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:28,551 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:28,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:28,569 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:28,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:28,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:28,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:26:28,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:28,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:28,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:28,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:28,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:28,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:28,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:28,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:28,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:28,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:28,685 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-12-14 05:26:28,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 206 [2022-12-14 05:26:28,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:28,747 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:28,845 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:29,312 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7238#(and (not (<= 0 (+ 9223372036854775807 |sep_#t~post4|))) (<= 0 |sep_#in~x.base|) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:29,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:29,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:29,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-14 05:26:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397337015] [2022-12-14 05:26:29,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:29,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 05:26:29,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 05:26:29,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-12-14 05:26:29,313 INFO L87 Difference]: Start difference. First operand 197 states and 245 transitions. Second operand has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 20 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:29,435 INFO L93 Difference]: Finished difference Result 263 states and 334 transitions. [2022-12-14 05:26:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 05:26:29,435 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 20 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-12-14 05:26:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:29,437 INFO L225 Difference]: With dead ends: 263 [2022-12-14 05:26:29,437 INFO L226 Difference]: Without dead ends: 262 [2022-12-14 05:26:29,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=269, Invalid=1213, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 05:26:29,438 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 68 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:29,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 269 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:29,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-12-14 05:26:29,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 239. [2022-12-14 05:26:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 229 states have (on average 1.2838427947598254) internal successors, (294), 235 states have internal predecessors, (294), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:29,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 299 transitions. [2022-12-14 05:26:29,455 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 299 transitions. Word has length 43 [2022-12-14 05:26:29,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:29,455 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 299 transitions. [2022-12-14 05:26:29,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 20 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:29,455 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 299 transitions. [2022-12-14 05:26:29,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 05:26:29,456 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:29,456 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:29,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 05:26:29,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 05:26:29,657 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:29,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash -298700908, now seen corresponding path program 1 times [2022-12-14 05:26:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:29,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670526747] [2022-12-14 05:26:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 05:26:29,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:29,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670526747] [2022-12-14 05:26:29,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670526747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:29,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690228421] [2022-12-14 05:26:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:29,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:29,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:29,752 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:29,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 05:26:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:29,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:29,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 05:26:29,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 05:26:29,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690228421] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:29,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1552906287] [2022-12-14 05:26:29,861 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 05:26:29,861 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:29,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:29,861 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:29,861 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:29,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,876 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:29,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:29,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:26:29,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:29,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:29,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:29,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:29,990 INFO L321 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2022-12-14 05:26:29,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 231 treesize of output 216 [2022-12-14 05:26:30,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:30,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:30,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:26:30,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:30,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:30,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:26:30,242 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:30,341 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:35,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1552906287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:35,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:35,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 5, 5] total 25 [2022-12-14 05:26:35,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629224541] [2022-12-14 05:26:35,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:35,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 05:26:35,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:35,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 05:26:35,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=512, Unknown=1, NotChecked=0, Total=600 [2022-12-14 05:26:35,168 INFO L87 Difference]: Start difference. First operand 239 states and 299 transitions. Second operand has 17 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2022-12-14 05:26:37,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 05:26:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:37,710 INFO L93 Difference]: Finished difference Result 259 states and 322 transitions. [2022-12-14 05:26:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 05:26:37,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) Word has length 45 [2022-12-14 05:26:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:37,712 INFO L225 Difference]: With dead ends: 259 [2022-12-14 05:26:37,712 INFO L226 Difference]: Without dead ends: 257 [2022-12-14 05:26:37,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=128, Invalid=801, Unknown=1, NotChecked=0, Total=930 [2022-12-14 05:26:37,712 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:37,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 77 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 321 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 05:26:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-12-14 05:26:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 241. [2022-12-14 05:26:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 231 states have (on average 1.2813852813852813) internal successors, (296), 237 states have internal predecessors, (296), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 301 transitions. [2022-12-14 05:26:37,722 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 301 transitions. Word has length 45 [2022-12-14 05:26:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:37,722 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 301 transitions. [2022-12-14 05:26:37,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2022-12-14 05:26:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 301 transitions. [2022-12-14 05:26:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 05:26:37,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:37,722 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:37,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 05:26:37,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 05:26:37,924 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:37,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash 573557269, now seen corresponding path program 1 times [2022-12-14 05:26:37,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:37,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933398291] [2022-12-14 05:26:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 05:26:37,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:37,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933398291] [2022-12-14 05:26:37,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933398291] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:37,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921229732] [2022-12-14 05:26:37,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:37,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:37,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:37,983 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:37,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 05:26:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:38,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:38,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 05:26:38,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 05:26:38,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921229732] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:38,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [665184975] [2022-12-14 05:26:38,088 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 05:26:38,088 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:38,088 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:38,088 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:38,088 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:38,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,108 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:38,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:38,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,124 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:38,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:38,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:38,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:38,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:38,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,225 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-12-14 05:26:38,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-12-14 05:26:38,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:38,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:26:38,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:38,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:26:38,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:38,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-12-14 05:26:38,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:38,524 INFO L321 Elim1Store]: treesize reduction 47, result has 35.6 percent of original size [2022-12-14 05:26:38,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2022-12-14 05:26:38,573 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 24 [2022-12-14 05:26:38,609 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:38,742 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:43,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [665184975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:43,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:43,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [5, 5, 5] total 26 [2022-12-14 05:26:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088717891] [2022-12-14 05:26:43,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 05:26:43,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 05:26:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=556, Unknown=1, NotChecked=0, Total=650 [2022-12-14 05:26:43,817 INFO L87 Difference]: Start difference. First operand 241 states and 301 transitions. Second operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2022-12-14 05:26:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:44,360 INFO L93 Difference]: Finished difference Result 257 states and 320 transitions. [2022-12-14 05:26:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 05:26:44,361 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) Word has length 48 [2022-12-14 05:26:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:44,362 INFO L225 Difference]: With dead ends: 257 [2022-12-14 05:26:44,362 INFO L226 Difference]: Without dead ends: 254 [2022-12-14 05:26:44,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=134, Invalid=857, Unknown=1, NotChecked=0, Total=992 [2022-12-14 05:26:44,362 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:44,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 44 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:26:44,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-12-14 05:26:44,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2022-12-14 05:26:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 231 states have (on average 1.2683982683982684) internal successors, (293), 234 states have internal predecessors, (293), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 298 transitions. [2022-12-14 05:26:44,372 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 298 transitions. Word has length 48 [2022-12-14 05:26:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:44,372 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 298 transitions. [2022-12-14 05:26:44,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2022-12-14 05:26:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 298 transitions. [2022-12-14 05:26:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 05:26:44,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:44,373 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:44,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 05:26:44,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:44,575 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1464823470, now seen corresponding path program 1 times [2022-12-14 05:26:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:44,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267647095] [2022-12-14 05:26:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 05:26:44,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:44,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267647095] [2022-12-14 05:26:44,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267647095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:44,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526705863] [2022-12-14 05:26:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:44,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:44,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:44,626 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:44,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 05:26:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:44,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:26:44,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 05:26:44,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 05:26:44,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526705863] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:44,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515260892] [2022-12-14 05:26:44,728 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 05:26:44,729 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:44,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:44,729 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:44,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:44,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:44,752 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:44,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:44,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:44,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:26:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:44,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:44,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:44,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-14 05:26:44,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:44,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:44,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:44,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:44,872 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-12-14 05:26:44,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-12-14 05:26:44,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:44,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:44,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:26:45,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:45,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:45,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:26:45,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:45,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:45,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:45,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:45,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-12-14 05:26:45,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:45,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:45,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:45,136 INFO L321 Elim1Store]: treesize reduction 47, result has 35.6 percent of original size [2022-12-14 05:26:45,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2022-12-14 05:26:45,175 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 24 [2022-12-14 05:26:45,220 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:45,310 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:52,483 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9929#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post12#1|) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 5 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:52,483 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:52,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:52,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 05:26:52,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425093930] [2022-12-14 05:26:52,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:52,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 05:26:52,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 05:26:52,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:26:52,484 INFO L87 Difference]: Start difference. First operand 238 states and 298 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:26:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:52,549 INFO L93 Difference]: Finished difference Result 470 states and 592 transitions. [2022-12-14 05:26:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:26:52,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-12-14 05:26:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:52,551 INFO L225 Difference]: With dead ends: 470 [2022-12-14 05:26:52,551 INFO L226 Difference]: Without dead ends: 250 [2022-12-14 05:26:52,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 125 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2022-12-14 05:26:52,552 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:52,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 128 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-12-14 05:26:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-12-14 05:26:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 243 states have (on average 1.2386831275720165) internal successors, (301), 246 states have internal predecessors, (301), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 306 transitions. [2022-12-14 05:26:52,561 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 306 transitions. Word has length 51 [2022-12-14 05:26:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:52,562 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 306 transitions. [2022-12-14 05:26:52,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:26:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 306 transitions. [2022-12-14 05:26:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 05:26:52,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:52,562 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:52,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 05:26:52,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 05:26:52,763 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:52,763 INFO L85 PathProgramCache]: Analyzing trace with hash 331021559, now seen corresponding path program 2 times [2022-12-14 05:26:52,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:52,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890612471] [2022-12-14 05:26:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:52,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 05:26:52,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:52,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890612471] [2022-12-14 05:26:52,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890612471] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:52,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285695429] [2022-12-14 05:26:52,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:26:52,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:52,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:52,864 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:52,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 05:26:52,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 05:26:52,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:26:52,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 05:26:52,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 05:26:52,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 05:26:53,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285695429] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:53,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1199947699] [2022-12-14 05:26:53,070 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 05:26:53,070 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:53,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:53,070 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:53,070 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:53,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:53,087 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:26:53,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:26:53,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:53,105 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:53,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:53,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:53,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:53,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:53,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-14 05:26:53,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:53,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:53,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:53,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:53,198 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-14 05:26:53,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 247 treesize of output 211 [2022-12-14 05:26:53,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:53,248 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:53,364 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:54,118 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11096#(and (not (<= 0 (+ 9223372036854775807 |sep_#t~post4|))) (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:54,118 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:54,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:54,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-12-14 05:26:54,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135286945] [2022-12-14 05:26:54,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:54,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 05:26:54,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:54,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 05:26:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2022-12-14 05:26:54,119 INFO L87 Difference]: Start difference. First operand 250 states and 306 transitions. Second operand has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:54,354 INFO L93 Difference]: Finished difference Result 485 states and 611 transitions. [2022-12-14 05:26:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 05:26:54,354 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-12-14 05:26:54,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:54,355 INFO L225 Difference]: With dead ends: 485 [2022-12-14 05:26:54,355 INFO L226 Difference]: Without dead ends: 484 [2022-12-14 05:26:54,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=332, Invalid=1924, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 05:26:54,356 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 107 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:54,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 179 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-12-14 05:26:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 313. [2022-12-14 05:26:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 306 states have (on average 1.2483660130718954) internal successors, (382), 309 states have internal predecessors, (382), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 387 transitions. [2022-12-14 05:26:54,369 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 387 transitions. Word has length 50 [2022-12-14 05:26:54,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:54,369 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 387 transitions. [2022-12-14 05:26:54,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:54,370 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 387 transitions. [2022-12-14 05:26:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 05:26:54,370 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:54,370 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-12-14 05:26:54,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-14 05:26:54,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 05:26:54,571 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash -14727670, now seen corresponding path program 2 times [2022-12-14 05:26:54,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:54,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177692917] [2022-12-14 05:26:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:54,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:54,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:54,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177692917] [2022-12-14 05:26:54,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177692917] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:54,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667504787] [2022-12-14 05:26:54,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:26:54,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:54,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:54,682 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:54,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 05:26:54,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 05:26:54,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:26:54,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 05:26:54,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:54,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:26:54,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667504787] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1384456095] [2022-12-14 05:26:54,872 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 05:26:54,872 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:54,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:54,872 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:54,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:54,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:54,891 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:54,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:54,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:54,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:26:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:54,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:54,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:54,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:54,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:54,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:54,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:54,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:54,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:54,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:54,981 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-12-14 05:26:54,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 206 [2022-12-14 05:26:55,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:55,038 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:55,152 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:55,841 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12381#(and (<= 0 |sep_#in~x.base|) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (< 9223372036854775806 |sep_#t~post3|) (= |#NULL.offset| 0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:55,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:55,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:55,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-12-14 05:26:55,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886703497] [2022-12-14 05:26:55,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:55,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 05:26:55,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:55,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 05:26:55,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 05:26:55,842 INFO L87 Difference]: Start difference. First operand 313 states and 387 transitions. Second operand has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 24 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:56,058 INFO L93 Difference]: Finished difference Result 381 states and 479 transitions. [2022-12-14 05:26:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 05:26:56,059 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 24 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-12-14 05:26:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:56,060 INFO L225 Difference]: With dead ends: 381 [2022-12-14 05:26:56,061 INFO L226 Difference]: Without dead ends: 380 [2022-12-14 05:26:56,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 121 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=366, Invalid=1526, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 05:26:56,061 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 102 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:56,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 244 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-12-14 05:26:56,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 355. [2022-12-14 05:26:56,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 348 states have (on average 1.2528735632183907) internal successors, (436), 351 states have internal predecessors, (436), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 441 transitions. [2022-12-14 05:26:56,079 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 441 transitions. Word has length 51 [2022-12-14 05:26:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:56,079 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 441 transitions. [2022-12-14 05:26:56,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 24 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:56,079 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 441 transitions. [2022-12-14 05:26:56,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 05:26:56,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:56,080 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:56,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-14 05:26:56,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 05:26:56,281 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1581673468, now seen corresponding path program 2 times [2022-12-14 05:26:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:56,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789867434] [2022-12-14 05:26:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 05:26:56,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789867434] [2022-12-14 05:26:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789867434] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753375471] [2022-12-14 05:26:56,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:26:56,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:56,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:56,381 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:56,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-14 05:26:56,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 05:26:56,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:26:56,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:26:56,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-12-14 05:26:56,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:26:56,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753375471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:56,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:26:56,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-12-14 05:26:56,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326365035] [2022-12-14 05:26:56,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:56,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:26:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:56,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:26:56,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-12-14 05:26:56,477 INFO L87 Difference]: Start difference. First operand 355 states and 441 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:56,529 INFO L93 Difference]: Finished difference Result 402 states and 501 transitions. [2022-12-14 05:26:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:26:56,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-12-14 05:26:56,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:56,530 INFO L225 Difference]: With dead ends: 402 [2022-12-14 05:26:56,530 INFO L226 Difference]: Without dead ends: 401 [2022-12-14 05:26:56,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-12-14 05:26:56,531 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:56,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 112 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:56,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-12-14 05:26:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 365. [2022-12-14 05:26:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 358 states have (on average 1.2569832402234637) internal successors, (450), 361 states have internal predecessors, (450), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 455 transitions. [2022-12-14 05:26:56,556 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 455 transitions. Word has length 51 [2022-12-14 05:26:56,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:56,557 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 455 transitions. [2022-12-14 05:26:56,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 455 transitions. [2022-12-14 05:26:56,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 05:26:56,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:56,558 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:56,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-14 05:26:56,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:56,758 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:56,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash -881551740, now seen corresponding path program 3 times [2022-12-14 05:26:56,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:56,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782447623] [2022-12-14 05:26:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:56,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 05:26:56,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:56,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782447623] [2022-12-14 05:26:56,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782447623] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:56,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3674423] [2022-12-14 05:26:56,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:26:56,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:56,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:56,870 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:56,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 05:26:56,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:26:56,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:26:56,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 05:26:56,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 05:26:56,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:26:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 05:26:57,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3674423] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:26:57,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [855932619] [2022-12-14 05:26:57,019 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 05:26:57,019 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:26:57,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:26:57,019 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:26:57,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:26:57,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:57,039 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:26:57,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:26:57,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:57,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:26:57,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:57,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 05:26:57,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:57,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:57,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-12-14 05:26:57,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:57,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:57,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:57,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:26:57,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:26:57,123 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-12-14 05:26:57,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 206 [2022-12-14 05:26:57,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 05:26:57,168 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-12-14 05:26:57,283 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:26:57,962 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14632#(and (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (< 9223372036854775806 |sep_#t~post3|) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:26:57,962 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:26:57,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:26:57,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-12-14 05:26:57,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698185972] [2022-12-14 05:26:57,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:26:57,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 05:26:57,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:57,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 05:26:57,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-12-14 05:26:57,963 INFO L87 Difference]: Start difference. First operand 365 states and 455 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:58,217 INFO L93 Difference]: Finished difference Result 656 states and 830 transitions. [2022-12-14 05:26:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 05:26:58,217 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-12-14 05:26:58,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:58,218 INFO L225 Difference]: With dead ends: 656 [2022-12-14 05:26:58,218 INFO L226 Difference]: Without dead ends: 655 [2022-12-14 05:26:58,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=330, Invalid=1926, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 05:26:58,219 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 68 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:58,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 181 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:26:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-12-14 05:26:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 390. [2022-12-14 05:26:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 383 states have (on average 1.2558746736292428) internal successors, (481), 386 states have internal predecessors, (481), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:26:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 486 transitions. [2022-12-14 05:26:58,242 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 486 transitions. Word has length 51 [2022-12-14 05:26:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:58,242 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 486 transitions. [2022-12-14 05:26:58,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 486 transitions. [2022-12-14 05:26:58,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 05:26:58,242 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:58,243 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 05:26:58,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-14 05:26:58,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 05:26:58,443 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:58,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2048287491, now seen corresponding path program 3 times [2022-12-14 05:26:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:58,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55559518] [2022-12-14 05:26:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:58,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 72 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-14 05:26:58,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:58,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55559518] [2022-12-14 05:26:58,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55559518] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:26:58,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435159662] [2022-12-14 05:26:58,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:26:58,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:26:58,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:26:58,560 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:26:58,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-14 05:26:58,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:26:58,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:26:58,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 05:26:58,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:26:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 05:26:58,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:26:58,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435159662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:58,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:26:58,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 22 [2022-12-14 05:26:58,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34800150] [2022-12-14 05:26:58,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:58,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 05:26:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 05:26:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-12-14 05:26:58,725 INFO L87 Difference]: Start difference. First operand 390 states and 486 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:58,806 INFO L93 Difference]: Finished difference Result 721 states and 890 transitions. [2022-12-14 05:26:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 05:26:58,806 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 05:26:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:58,808 INFO L225 Difference]: With dead ends: 721 [2022-12-14 05:26:58,808 INFO L226 Difference]: Without dead ends: 348 [2022-12-14 05:26:58,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:26:58,811 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:58,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 191 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-12-14 05:26:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 80. [2022-12-14 05:26:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.118421052631579) internal successors, (85), 76 states have internal predecessors, (85), 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) [2022-12-14 05:26:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2022-12-14 05:26:58,820 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 64 [2022-12-14 05:26:58,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:58,821 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2022-12-14 05:26:58,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2022-12-14 05:26:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 05:26:58,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:26:58,821 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:26:58,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-14 05:26:59,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 05:26:59,022 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 05:26:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:26:59,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1177238290, now seen corresponding path program 2 times [2022-12-14 05:26:59,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:26:59,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25830983] [2022-12-14 05:26:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:26:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:26:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:26:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-12-14 05:26:59,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:26:59,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25830983] [2022-12-14 05:26:59,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25830983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:26:59,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:26:59,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:26:59,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563732201] [2022-12-14 05:26:59,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:26:59,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:26:59,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:26:59,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:26:59,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:26:59,067 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:26:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:26:59,092 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-12-14 05:26:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:26:59,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2022-12-14 05:26:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:26:59,093 INFO L225 Difference]: With dead ends: 80 [2022-12-14 05:26:59,093 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 05:26:59,093 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 [2022-12-14 05:26:59,094 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:26:59,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:26:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 05:26:59,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 05:26:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:26:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 05:26:59,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2022-12-14 05:26:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:26:59,095 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 05:26:59,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:26:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 05:26:59,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 05:26:59,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-12-14 05:26:59,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-12-14 05:26:59,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-12-14 05:26:59,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-12-14 05:26:59,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-12-14 05:26:59,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-12-14 05:26:59,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-12-14 05:26:59,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-12-14 05:26:59,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-12-14 05:26:59,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-12-14 05:26:59,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-12-14 05:26:59,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-12-14 05:26:59,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 05:26:59,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 05:27:04,079 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-12-14 05:27:04,080 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 5 |ULTIMATE.start_main_~i~1#1|) (exists ((v_sep_~ret~0_BEFORE_RETURN_1 Int)) (and (<= v_sep_~ret~0_BEFORE_RETURN_1 9223372036854775807) (= (let ((.cse0 (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) |ULTIMATE.start_main_~ret~1#1|) (<= 1 v_sep_~ret~0_BEFORE_RETURN_1))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 4 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-12-14 05:27:04,080 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-12-14 05:27:04,080 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-12-14 05:27:04,080 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-12-14 05:27:04,080 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-12-14 05:27:04,080 INFO L899 garLoopResultBuilder]: For program point L37-3(line 37) no Hoare annotation was computed. [2022-12-14 05:27:04,080 INFO L899 garLoopResultBuilder]: For program point L37-4(line 37) no Hoare annotation was computed. [2022-12-14 05:27:04,080 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-12-14 05:27:04,080 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 05:27:04,081 INFO L895 garLoopResultBuilder]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse3 (<= 1 |ULTIMATE.start_main_~i~1#1|))) (and (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse2 (<= |#NULL.offset| 0)) (.cse4 (<= |#NULL.base| 0)) (.cse5 (<= 0 |#NULL.offset|)) (.cse6 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~i~1#1| 2147483647) .cse3 .cse4 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) .cse5 .cse6 (<= 0 |#StackHeapBarrier|)) (and .cse0 (<= 0 |ULTIMATE.start_main_~i~1#1|) .cse1 .cse2 (<= |ULTIMATE.start_main_~i~1#1| 0) .cse4 .cse5 .cse6))) (or (let ((.cse7 (select |#memory_int| 1))) (and (= 2 (select |#length| 1)) (= (select |#valid| |ULTIMATE.start_main_~#x~0#1.base|) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse7 0) 48) (= 10 (select |#length| 2)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#x~0#1.base|) (= (select .cse7 1) 0) (< 0 |#StackHeapBarrier|) (= (select |#length| |ULTIMATE.start_main_~#x~0#1.base|) 20))) .cse3))) [2022-12-14 05:27:04,081 INFO L895 garLoopResultBuilder]: At program point L37-6(lines 37 39) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 5 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-12-14 05:27:04,081 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-12-14 05:27:04,081 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~2#1|))) (and (or .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|) |ULTIMATE.start_main_~temp~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647)) (.cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse3 (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648))) (.cse4 (<= |#NULL.offset| 0)) (.cse5 (<= |ULTIMATE.start_main_~ret~1#1| 2147483647)) (.cse6 (<= |ULTIMATE.start_main_~i~1#1| 2147483647)) (.cse7 (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) (.cse8 (<= 5 |ULTIMATE.start_main_~i~1#1|)) (.cse9 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|)) (.cse10 (<= 0 |#NULL.offset|)) (.cse11 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse1 (<= |ULTIMATE.start_main_~i~2#1| 0) .cse2 (<= 0 |ULTIMATE.start_main_~i~2#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse0 (<= |ULTIMATE.start_main_~i~2#1| 2147483647) .cse9 .cse10 .cse11))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 05:27:04,081 INFO L902 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: true [2022-12-14 05:27:04,081 INFO L899 garLoopResultBuilder]: For program point L46-3(line 46) no Hoare annotation was computed. [2022-12-14 05:27:04,081 INFO L899 garLoopResultBuilder]: For program point L46-4(line 46) no Hoare annotation was computed. [2022-12-14 05:27:04,081 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 05:27:04,082 INFO L895 garLoopResultBuilder]: At program point L46-5(lines 46 48) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~2#1|))) (and (or .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|) |ULTIMATE.start_main_~temp~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647)) (.cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse3 (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648))) (.cse4 (<= |#NULL.offset| 0)) (.cse5 (<= |ULTIMATE.start_main_~ret~1#1| 2147483647)) (.cse6 (<= |ULTIMATE.start_main_~i~1#1| 2147483647)) (.cse7 (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) (.cse8 (<= 5 |ULTIMATE.start_main_~i~1#1|)) (.cse9 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|)) (.cse10 (<= 0 |#NULL.offset|)) (.cse11 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse1 (<= |ULTIMATE.start_main_~i~2#1| 0) .cse2 (<= 0 |ULTIMATE.start_main_~i~2#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse0 (<= |ULTIMATE.start_main_~i~2#1| 2147483647) .cse9 .cse10 .cse11))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 05:27:04,082 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-12-14 05:27:04,082 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-12-14 05:27:04,082 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-12-14 05:27:04,082 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-12-14 05:27:04,082 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-12-14 05:27:04,082 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-12-14 05:27:04,082 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-12-14 05:27:04,082 INFO L899 garLoopResultBuilder]: For program point sepEXIT(lines 15 26) no Hoare annotation was computed. [2022-12-14 05:27:04,082 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 26) the Hoare annotation is: true [2022-12-14 05:27:04,083 INFO L899 garLoopResultBuilder]: For program point sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-12-14 05:27:04,083 INFO L899 garLoopResultBuilder]: For program point sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2022-12-14 05:27:04,083 INFO L899 garLoopResultBuilder]: For program point sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-12-14 05:27:04,083 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 23) no Hoare annotation was computed. [2022-12-14 05:27:04,083 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 18 24) no Hoare annotation was computed. [2022-12-14 05:27:04,083 INFO L899 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2022-12-14 05:27:04,083 INFO L899 garLoopResultBuilder]: For program point L18-4(line 18) no Hoare annotation was computed. [2022-12-14 05:27:04,083 INFO L895 garLoopResultBuilder]: At program point L18-5(lines 18 24) the Hoare annotation is: (let ((.cse0 (+ 9223372036854775808 sep_~ret~0)) (.cse15 (+ sep_~ret~0 1))) (let ((.cse8 (<= 1 sep_~ret~0)) (.cse6 (<= 0 sep_~x.base)) (.cse7 (<= 0 sep_~x.offset)) (.cse9 (<= sep_~x.offset 0)) (.cse11 (<= 0 sep_~ret~0)) (.cse3 (<= 5 sep_~i~0)) (.cse12 (<= 0 .cse15)) (.cse14 (<= .cse15 0)) (.cse5 (<= 2 sep_~i~0)) (.cse1 (< sep_~ret~0 9223372036854775806)) (.cse2 (<= 1 sep_~i~0)) (.cse4 (<= 0 .cse0)) (.cse10 (<= sep_~ret~0 1)) (.cse13 (<= 3 sep_~i~0))) (or (not (= |#NULL.offset| 0)) (and (< 0 .cse0) .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse7 .cse8 (<= sep_~ret~0 2) .cse9) (and (or (and (= sep_~ret~0 0) (= sep_~i~0 0) (= sep_~x.base |sep_#in~x.base|)) (and .cse2 .cse8)) .cse10 .cse6 .cse7 .cse9) (not (= |sep_#in~x.offset| 0)) (and .cse11 .cse5 (<= sep_~ret~0 0)) (and .cse11 (< sep_~ret~0 9223372036854775807) .cse3) (and .cse12 (< sep_~ret~0 9223372036854775805) .cse13) (and .cse14 .cse12 .cse2) (and .cse14 .cse5 (<= 0 (+ 2 sep_~ret~0))) (not (= |#NULL.base| 0)) (and .cse1 (<= 4 sep_~i~0) .cse2 (< 0 (+ 9223372036854775807 sep_~ret~0)) .cse4) (not (<= 0 |#StackHeapBarrier|)) (not (<= 0 |sep_#in~x.base|)) (and (< 0 (+ 9223372036854775806 sep_~ret~0)) .cse10 .cse13)))) [2022-12-14 05:27:04,083 INFO L899 garLoopResultBuilder]: For program point sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2022-12-14 05:27:04,084 INFO L899 garLoopResultBuilder]: For program point sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-12-14 05:27:04,084 INFO L899 garLoopResultBuilder]: For program point sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-12-14 05:27:04,086 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:27:04,088 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:27:04,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:27:04 BoogieIcfgContainer [2022-12-14 05:27:04,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:27:04,101 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:27:04,101 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:27:04,102 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:27:04,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:26:09" (3/4) ... [2022-12-14 05:27:04,104 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 05:27:04,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sep [2022-12-14 05:27:04,111 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-14 05:27:04,111 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-12-14 05:27:04,111 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 05:27:04,111 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 05:27:04,136 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 05:27:04,136 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:27:04,137 INFO L158 Benchmark]: Toolchain (without parser) took 55693.91ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 123.9MB in the beginning and 120.2MB in the end (delta: 3.7MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-12-14 05:27:04,137 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 107.0MB. Free memory is still 68.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:27:04,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.01ms. Allocated memory is still 186.6MB. Free memory was 123.7MB in the beginning and 113.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:27:04,137 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.13ms. Allocated memory is still 186.6MB. Free memory was 113.3MB in the beginning and 111.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:27:04,137 INFO L158 Benchmark]: Boogie Preprocessor took 25.83ms. Allocated memory is still 186.6MB. Free memory was 111.6MB in the beginning and 110.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:27:04,137 INFO L158 Benchmark]: RCFGBuilder took 322.84ms. Allocated memory is still 186.6MB. Free memory was 110.2MB in the beginning and 95.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 05:27:04,138 INFO L158 Benchmark]: TraceAbstraction took 55051.83ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 94.4MB in the beginning and 123.4MB in the end (delta: -29.0MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2022-12-14 05:27:04,138 INFO L158 Benchmark]: Witness Printer took 34.91ms. Allocated memory is still 224.4MB. Free memory was 123.4MB in the beginning and 120.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:27:04,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 107.0MB. Free memory is still 68.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.01ms. Allocated memory is still 186.6MB. Free memory was 123.7MB in the beginning and 113.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.13ms. Allocated memory is still 186.6MB. Free memory was 113.3MB in the beginning and 111.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.83ms. Allocated memory is still 186.6MB. Free memory was 111.6MB in the beginning and 110.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.84ms. Allocated memory is still 186.6MB. Free memory was 110.2MB in the beginning and 95.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 55051.83ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 94.4MB in the beginning and 123.4MB in the end (delta: -29.0MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. * Witness Printer took 34.91ms. Allocated memory is still 224.4MB. Free memory was 123.4MB in the beginning and 120.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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, 39 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 55.0s, OverallIterations: 30, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1092 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1068 mSDsluCounter, 4067 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3302 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3255 IncrementalHoareTripleChecker+Invalid, 3371 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 765 mSDtfsCounter, 3255 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2302 GetRequests, 1612 SyntacticMatches, 62 SemanticMatches, 628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6519 ImplicationChecksByTransitivity, 28.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=390occurred in iteration=28, InterpolantAutomatonStates: 345, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 30 MinimizatonAttempts, 991 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 44 PreInvPairs, 115 NumberOfFragments, 594 HoareAnnotationTreeSize, 44 FomulaSimplifications, 13423 FormulaSimplificationTreeSizeReduction, 3.7s HoareSimplificationTime, 8 FomulaSimplificationsInter, 17439 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1832 NumberOfCodeBlocks, 1791 NumberOfCodeBlocksAsserted, 72 NumberOfCheckSat, 2349 ConstructedInterpolants, 0 QuantifiedInterpolants, 4661 SizeOfPredicates, 53 NumberOfNonLiveVariables, 3596 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 75 InterpolantComputations, 11 PerfectInterpolantSequences, 2175/2984 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: 3.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 16, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 128, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 356, TOOLS_POST_TIME: 2.4s, TOOLS_POST_CALL_APPLICATIONS: 18, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 382, TOOLS_QUANTIFIERELIM_TIME: 2.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 619, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 41, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 30, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 45, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 128, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 15, LOOP_SUMMARIZER_CACHE_MISSES: 15, LOOP_SUMMARIZER_OVERALL_TIME: 1.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 45, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, 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: 1551, DAG_COMPRESSION_RETAINED_NODES: 416, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((0 <= #NULL && 0 <= x) && #NULL <= 0) && i <= 2147483647) && 1 <= i) && #NULL <= 0) && 0 <= x) && 0 <= #NULL) && x <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((0 <= #NULL && 0 <= i) && 0 <= x) && #NULL <= 0) && i <= 0) && #NULL <= 0) && 0 <= #NULL) && x <= 0)) && (((((((((((2 == unknown-#length-unknown[1] && \valid[x] == 1) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && 10 == unknown-#length-unknown[2]) && unknown-#StackHeapBarrier-unknown < x) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#length-unknown[x] == 20) || 1 <= i) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((1 <= i || unknown-#memory_int-unknown[x][x] == temp) && (((((((((((((ret2 <= 2147483647 && i <= 0) && 0 <= x) && 0 <= i) && 0 <= ret + 2147483648) && #NULL <= 0) && ret <= 2147483647) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 5 <= i) && 0 <= x) && 0 <= #NULL) && x <= 0) || ((((((((((((ret2 <= 2147483647 && 0 <= x) && 0 <= ret + 2147483648) && #NULL <= 0) && ret <= 2147483647) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 5 <= i) && 1 <= i) && i <= 2147483647) && 0 <= x) && 0 <= #NULL) && x <= 0))) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (((((((((((((!(#NULL == 0) || ((((0 < 9223372036854775808 + ret && ret < 9223372036854775806) && 1 <= i) && 5 <= i) && 0 <= 9223372036854775808 + ret)) || (((((2 <= i && 0 <= x) && 0 <= x) && 1 <= ret) && ret <= 2) && x <= 0)) || (((((((ret == 0 && i == 0) && x == x) || (1 <= i && 1 <= ret)) && ret <= 1) && 0 <= x) && 0 <= x) && x <= 0)) || !(x == 0)) || ((0 <= ret && 2 <= i) && ret <= 0)) || ((0 <= ret && ret < 9223372036854775807) && 5 <= i)) || ((0 <= ret + 1 && ret < 9223372036854775805) && 3 <= i)) || ((ret + 1 <= 0 && 0 <= ret + 1) && 1 <= i)) || ((ret + 1 <= 0 && 2 <= i) && 0 <= 2 + ret)) || !(#NULL == 0)) || ((((ret < 9223372036854775806 && 4 <= i) && 1 <= i) && 0 < 9223372036854775807 + ret) && 0 <= 9223372036854775808 + ret)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(0 <= x)) || ((0 < 9223372036854775806 + ret && ret <= 1) && 3 <= i) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 05:27:04,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb2d9f70-6d7e-4150-b16f-75d3feda7b0e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE