./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loops/sum01_bug02.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/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_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum01_bug02.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/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_ae117644-40b3-455a-9f7a-55dac929df6b/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 29d100da65e2ae9d5c43d48b49216d155078158e341858baee0b08b697e15c8e --- 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 03:09:31,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:09:31,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:09:31,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:09:31,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:09:31,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:09:31,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:09:31,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:09:31,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:09:31,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:09:31,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:09:31,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:09:31,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:09:31,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:09:31,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:09:31,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:09:31,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:09:31,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:09:31,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:09:31,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:09:31,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:09:31,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:09:31,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:09:31,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:09:31,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:09:31,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:09:31,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:09:31,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:09:31,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:09:31,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:09:31,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:09:31,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:09:31,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:09:31,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:09:31,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:09:31,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:09:31,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:09:31,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:09:31,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:09:31,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:09:31,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:09:31,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 03:09:31,503 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:09:31,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:09:31,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:09:31,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:09:31,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:09:31,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:09:31,505 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:09:31,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:09:31,505 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:09:31,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:09:31,505 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:09:31,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:09:31,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:09:31,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:09:31,506 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:09:31,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:09:31,506 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:09:31,507 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:09:31,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:09:31,507 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:09:31,507 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 03:09:31,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:09:31,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:09:31,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:09:31,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:09:31,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:09:31,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:09:31,509 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 03:09:31,509 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:09:31,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:09:31,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:09:31,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:09:31,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:09:31,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:09:31,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:09:31,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:09:31,510 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:09:31,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:09:31,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:09:31,510 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:09:31,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:09:31,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:09:31,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:09:31,511 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_ae117644-40b3-455a-9f7a-55dac929df6b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29d100da65e2ae9d5c43d48b49216d155078158e341858baee0b08b697e15c8e [2022-12-14 03:09:31,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:09:31,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:09:31,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:09:31,731 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:09:31,731 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:09:31,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loops/sum01_bug02.i [2022-12-14 03:09:34,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:09:34,628 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:09:34,629 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/sv-benchmarks/c/loops/sum01_bug02.i [2022-12-14 03:09:34,633 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/data/d6049fe04/b49c757228d9485d9ab388138a3fabbc/FLAG72d861d66 [2022-12-14 03:09:34,644 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/data/d6049fe04/b49c757228d9485d9ab388138a3fabbc [2022-12-14 03:09:34,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:09:34,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:09:34,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:09:34,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:09:34,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:09:34,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19348aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34, skipping insertion in model container [2022-12-14 03:09:34,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:09:34,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:09:34,767 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_ae117644-40b3-455a-9f7a-55dac929df6b/sv-benchmarks/c/loops/sum01_bug02.i[812,825] [2022-12-14 03:09:34,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:09:34,781 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:09:34,789 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_ae117644-40b3-455a-9f7a-55dac929df6b/sv-benchmarks/c/loops/sum01_bug02.i[812,825] [2022-12-14 03:09:34,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:09:34,801 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:09:34,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34 WrapperNode [2022-12-14 03:09:34,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:09:34,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:09:34,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:09:34,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:09:34,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,824 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2022-12-14 03:09:34,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:09:34,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:09:34,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:09:34,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:09:34,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,836 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:09:34,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:09:34,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:09:34,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:09:34,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (1/1) ... [2022-12-14 03:09:34,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:09:34,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:34,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:09:34,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:09:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:09:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 03:09:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:09:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:09:34,944 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:09:34,945 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:09:35,040 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:09:35,059 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:09:35,059 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 03:09:35,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:09:35 BoogieIcfgContainer [2022-12-14 03:09:35,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:09:35,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:09:35,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:09:35,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:09:35,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:09:34" (1/3) ... [2022-12-14 03:09:35,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa0502b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:09:35, skipping insertion in model container [2022-12-14 03:09:35,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:34" (2/3) ... [2022-12-14 03:09:35,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa0502b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:09:35, skipping insertion in model container [2022-12-14 03:09:35,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:09:35" (3/3) ... [2022-12-14 03:09:35,068 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2022-12-14 03:09:35,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:09:35,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 03:09:35,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:09:35,142 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;@31488b31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:09:35,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-14 03:09:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 03:09:35,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:35,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 03:09:35,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:35,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2660150, now seen corresponding path program 1 times [2022-12-14 03:09:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:35,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807698449] [2022-12-14 03:09:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:35,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:35,307 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 03:09:35,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:35,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807698449] [2022-12-14 03:09:35,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807698449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:35,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:35,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 03:09:35,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471754717] [2022-12-14 03:09:35,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:35,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:09:35,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:09:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:09:35,337 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:35,363 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-12-14 03:09:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:09:35,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 03:09:35,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:35,371 INFO L225 Difference]: With dead ends: 23 [2022-12-14 03:09:35,371 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 03:09:35,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:09:35,375 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:35,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 14 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:35,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 03:09:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-14 03:09:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-12-14 03:09:35,409 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 4 [2022-12-14 03:09:35,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:35,409 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-12-14 03:09:35,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-12-14 03:09:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 03:09:35,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:35,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 03:09:35,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 03:09:35,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:35,411 INFO L85 PathProgramCache]: Analyzing trace with hash 82464723, now seen corresponding path program 1 times [2022-12-14 03:09:35,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:35,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016723848] [2022-12-14 03:09:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:35,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:35,453 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 03:09:35,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:35,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016723848] [2022-12-14 03:09:35,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016723848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:35,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:35,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:09:35,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444449840] [2022-12-14 03:09:35,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:35,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:35,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:35,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:35,456 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 03:09:35,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:35,497 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-12-14 03:09:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:35,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-12-14 03:09:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:35,499 INFO L225 Difference]: With dead ends: 38 [2022-12-14 03:09:35,499 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 03:09:35,499 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 03:09:35,501 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:35,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 39 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 03:09:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2022-12-14 03:09:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-12-14 03:09:35,507 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 5 [2022-12-14 03:09:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:35,507 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-12-14 03:09:35,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 03:09:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-12-14 03:09:35,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 03:09:35,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:35,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 03:09:35,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 03:09:35,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:35,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:35,510 INFO L85 PathProgramCache]: Analyzing trace with hash 82416898, now seen corresponding path program 1 times [2022-12-14 03:09:35,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:35,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893236743] [2022-12-14 03:09:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:35,557 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 03:09:35,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:35,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893236743] [2022-12-14 03:09:35,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893236743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:35,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:35,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 03:09:35,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182373616] [2022-12-14 03:09:35,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:35,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:09:35,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:35,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:09:35,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:09:35,560 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 03:09:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:35,578 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-12-14 03:09:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:09:35,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-12-14 03:09:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:35,580 INFO L225 Difference]: With dead ends: 39 [2022-12-14 03:09:35,580 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 03:09:35,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:09:35,581 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:35,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 29 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 03:09:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-12-14 03:09:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.608695652173913) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2022-12-14 03:09:35,587 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 5 [2022-12-14 03:09:35,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:35,587 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-12-14 03:09:35,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 03:09:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2022-12-14 03:09:35,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 03:09:35,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:35,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 03:09:35,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 03:09:35,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:35,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1740037448, now seen corresponding path program 1 times [2022-12-14 03:09:35,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:35,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510204919] [2022-12-14 03:09:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:35,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:35,643 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 03:09:35,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:35,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510204919] [2022-12-14 03:09:35,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510204919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:35,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:35,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:09:35,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269267037] [2022-12-14 03:09:35,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:35,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:35,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:35,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:35,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:35,647 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 03:09:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:35,669 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-12-14 03:09:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:35,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 03:09:35,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:35,670 INFO L225 Difference]: With dead ends: 56 [2022-12-14 03:09:35,670 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 03:09:35,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:35,672 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:35,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 41 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 03:09:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-12-14 03:09:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-12-14 03:09:35,678 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 6 [2022-12-14 03:09:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:35,678 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-12-14 03:09:35,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 03:09:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-12-14 03:09:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 03:09:35,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:35,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:35,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 03:09:35,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:35,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1439433228, now seen corresponding path program 1 times [2022-12-14 03:09:35,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:35,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025946567] [2022-12-14 03:09:35,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:35,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:35,721 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 03:09:35,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025946567] [2022-12-14 03:09:35,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025946567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:35,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:35,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:09:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748169694] [2022-12-14 03:09:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:35,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:35,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:35,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:35,724 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:35,751 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-12-14 03:09:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:09:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 03:09:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:35,752 INFO L225 Difference]: With dead ends: 29 [2022-12-14 03:09:35,752 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 03:09:35,752 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 03:09:35,753 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:35,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 41 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 03:09:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-12-14 03:09:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 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 03:09:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-12-14 03:09:35,758 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 8 [2022-12-14 03:09:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:35,758 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-12-14 03:09:35,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-12-14 03:09:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 03:09:35,759 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:35,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:35,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 03:09:35,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:35,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1672757048, now seen corresponding path program 1 times [2022-12-14 03:09:35,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:35,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208894288] [2022-12-14 03:09:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:35,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:35,798 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 03:09:35,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:35,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208894288] [2022-12-14 03:09:35,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208894288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:35,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:35,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:09:35,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643166435] [2022-12-14 03:09:35,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:35,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:35,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:35,801 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:35,820 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-12-14 03:09:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:35,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 03:09:35,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:35,821 INFO L225 Difference]: With dead ends: 26 [2022-12-14 03:09:35,822 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 03:09:35,822 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 03:09:35,823 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:35,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 03:09:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 03:09:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-12-14 03:09:35,827 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 9 [2022-12-14 03:09:35,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:35,828 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-12-14 03:09:35,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-12-14 03:09:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 03:09:35,828 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:35,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:35,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 03:09:35,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash -315859973, now seen corresponding path program 1 times [2022-12-14 03:09:35,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:35,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275749253] [2022-12-14 03:09:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:35,881 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 03:09:35,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:35,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275749253] [2022-12-14 03:09:35,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275749253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:35,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:35,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:09:35,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062094981] [2022-12-14 03:09:35,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:35,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:35,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:35,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:35,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:35,883 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:35,913 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-12-14 03:09:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:35,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 03:09:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:35,914 INFO L225 Difference]: With dead ends: 30 [2022-12-14 03:09:35,914 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 03:09:35,914 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 03:09:35,915 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:35,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 03:09:35,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-12-14 03:09:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-12-14 03:09:35,920 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 10 [2022-12-14 03:09:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:35,920 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-12-14 03:09:35,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:35,921 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-12-14 03:09:35,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 03:09:35,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:35,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:35,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 03:09:35,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2022223687, now seen corresponding path program 1 times [2022-12-14 03:09:35,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:35,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575997420] [2022-12-14 03:09:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:35,987 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 03:09:35,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:35,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575997420] [2022-12-14 03:09:35,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575997420] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:35,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267405764] [2022-12-14 03:09:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:35,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:35,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:35,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:35,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 03:09:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:36,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:09:36,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:36,076 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 03:09:36,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:36,120 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 03:09:36,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267405764] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:36,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1750523030] [2022-12-14 03:09:36,134 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 03:09:36,134 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:36,141 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:36,146 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:36,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:36,634 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:36,963 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '613#(and (< 9223372036854775807 (* 2 |ULTIMATE.start_main_~n~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| 10) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (< |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:09:36,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:09:36,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:36,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 03:09:36,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58530516] [2022-12-14 03:09:36,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:36,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 03:09:36,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 03:09:36,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-12-14 03:09:36,966 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:37,113 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2022-12-14 03:09:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 03:09:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 03:09:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:37,114 INFO L225 Difference]: With dead ends: 44 [2022-12-14 03:09:37,114 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 03:09:37,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2022-12-14 03:09:37,116 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:37,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 49 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 03:09:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 25. [2022-12-14 03:09:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-12-14 03:09:37,119 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 14 [2022-12-14 03:09:37,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:37,120 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-12-14 03:09:37,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-12-14 03:09:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 03:09:37,120 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:37,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:37,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 03:09:37,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:37,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2022271512, now seen corresponding path program 1 times [2022-12-14 03:09:37,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:37,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333530625] [2022-12-14 03:09:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:37,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:37,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:37,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333530625] [2022-12-14 03:09:37,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333530625] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:37,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963310654] [2022-12-14 03:09:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:37,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:37,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:37,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 03:09:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:37,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:09:37,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:37,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:37,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963310654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:37,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:09:37,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-14 03:09:37,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42612316] [2022-12-14 03:09:37,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:37,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:37,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:37,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:37,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:09:37,442 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:37,451 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-12-14 03:09:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:37,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 03:09:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:37,452 INFO L225 Difference]: With dead ends: 25 [2022-12-14 03:09:37,452 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 03:09:37,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 03:09:37,453 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:37,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:37,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 03:09:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 03:09:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-12-14 03:09:37,457 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2022-12-14 03:09:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:37,457 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-12-14 03:09:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-12-14 03:09:37,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 03:09:37,458 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:37,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:37,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 03:09:37,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:37,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:37,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1734092620, now seen corresponding path program 1 times [2022-12-14 03:09:37,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:37,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785378981] [2022-12-14 03:09:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:37,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:37,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785378981] [2022-12-14 03:09:37,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785378981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579480294] [2022-12-14 03:09:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:37,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:37,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:37,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:37,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 03:09:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:37,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:09:37,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:37,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:37,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579480294] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:37,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253833428] [2022-12-14 03:09:37,768 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:09:37,768 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:37,769 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:37,769 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:37,769 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:38,037 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:38,210 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '905#(and (<= |ULTIMATE.start_main_~j~0#1| 10) (< 2147483645 |ULTIMATE.start_main_~sn~0#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 03:09:38,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:09:38,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:38,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-14 03:09:38,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624215444] [2022-12-14 03:09:38,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:38,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 03:09:38,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:38,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 03:09:38,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-14 03:09:38,212 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:38,230 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-12-14 03:09:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:09:38,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 03:09:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:38,231 INFO L225 Difference]: With dead ends: 61 [2022-12-14 03:09:38,231 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 03:09:38,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-14 03:09:38,232 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:38,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 62 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:38,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 03:09:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2022-12-14 03:09:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 50 states have internal predecessors, (64), 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 03:09:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-12-14 03:09:38,238 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 15 [2022-12-14 03:09:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:38,238 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-12-14 03:09:38,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-12-14 03:09:38,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 03:09:38,239 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:38,239 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:38,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 03:09:38,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 03:09:38,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:38,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1734098578, now seen corresponding path program 1 times [2022-12-14 03:09:38,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:38,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400540156] [2022-12-14 03:09:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:38,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:38,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:38,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400540156] [2022-12-14 03:09:38,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400540156] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:38,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982968362] [2022-12-14 03:09:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:38,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:38,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:38,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:38,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 03:09:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:38,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 03:09:38,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:38,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982968362] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [267556891] [2022-12-14 03:09:38,702 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:09:38,702 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:38,702 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:38,702 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:38,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:38,957 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:39,399 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1134#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (not (<= 0 (+ 2147483647 |ULTIMATE.start_main_#t~post3#1|))) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_#t~post3#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:09:39,400 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:09:39,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:39,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2022-12-14 03:09:39,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412230821] [2022-12-14 03:09:39,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:39,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 03:09:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:39,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 03:09:39,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-12-14 03:09:39,401 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 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 03:09:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:39,486 INFO L93 Difference]: Finished difference Result 96 states and 117 transitions. [2022-12-14 03:09:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 03:09:39,486 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 03:09:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:39,486 INFO L225 Difference]: With dead ends: 96 [2022-12-14 03:09:39,487 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 03:09:39,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=722, Unknown=0, NotChecked=0, Total=870 [2022-12-14 03:09:39,487 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 41 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:39,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 63 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 03:09:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2022-12-14 03:09:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-12-14 03:09:39,492 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 15 [2022-12-14 03:09:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:39,493 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-12-14 03:09:39,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 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 03:09:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-12-14 03:09:39,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 03:09:39,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:39,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 03:09:39,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 03:09:39,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 03:09:39,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:39,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:39,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2093352235, now seen corresponding path program 1 times [2022-12-14 03:09:39,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:39,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584498376] [2022-12-14 03:09:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:39,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:39,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:39,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584498376] [2022-12-14 03:09:39,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584498376] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:39,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628299495] [2022-12-14 03:09:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:39,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:39,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:39,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:39,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 03:09:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:39,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:09:39,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:39,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:39,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628299495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:39,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:09:39,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 03:09:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014943358] [2022-12-14 03:09:39,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:39,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:09:39,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:39,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:09:39,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:09:39,842 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:39,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:39,876 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2022-12-14 03:09:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:09:39,877 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), 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 19 [2022-12-14 03:09:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:39,877 INFO L225 Difference]: With dead ends: 46 [2022-12-14 03:09:39,877 INFO L226 Difference]: Without dead ends: 45 [2022-12-14 03:09:39,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 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 03:09:39,878 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:39,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 37 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:39,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-14 03:09:39,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-12-14 03:09:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 44 states have internal predecessors, (50), 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 03:09:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2022-12-14 03:09:39,882 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 19 [2022-12-14 03:09:39,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:39,883 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2022-12-14 03:09:39,883 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), 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 03:09:39,883 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2022-12-14 03:09:39,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 03:09:39,883 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:39,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-14 03:09:39,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 03:09:40,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 03:09:40,084 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:40,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash -469409779, now seen corresponding path program 1 times [2022-12-14 03:09:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:40,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131826704] [2022-12-14 03:09:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:40,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:40,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:40,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131826704] [2022-12-14 03:09:40,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131826704] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:40,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598200567] [2022-12-14 03:09:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:40,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:40,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:40,122 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:40,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 03:09:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:40,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:09:40,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:40,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:40,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598200567] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:40,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1296491672] [2022-12-14 03:09:40,205 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:09:40,206 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:40,206 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:40,206 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:40,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:40,446 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:40,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1296491672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:40,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:40,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5] total 18 [2022-12-14 03:09:40,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44893947] [2022-12-14 03:09:40,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:40,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 03:09:40,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 03:09:40,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-12-14 03:09:40,745 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:40,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:40,955 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-12-14 03:09:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 03:09:40,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 03:09:40,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:40,956 INFO L225 Difference]: With dead ends: 73 [2022-12-14 03:09:40,956 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 03:09:40,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-12-14 03:09:40,957 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 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 03:09:40,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:40,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 03:09:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-12-14 03:09:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 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 03:09:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2022-12-14 03:09:40,961 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 20 [2022-12-14 03:09:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:40,961 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2022-12-14 03:09:40,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:09:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2022-12-14 03:09:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 03:09:40,961 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:40,961 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-12-14 03:09:40,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 03:09:41,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:41,163 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:41,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:41,165 INFO L85 PathProgramCache]: Analyzing trace with hash 249262418, now seen corresponding path program 2 times [2022-12-14 03:09:41,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:41,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555976220] [2022-12-14 03:09:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:41,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:41,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:41,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555976220] [2022-12-14 03:09:41,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555976220] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:41,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049650751] [2022-12-14 03:09:41,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:09:41,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:41,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:41,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:41,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 03:09:41,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 03:09:41,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:09:41,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 03:09:41,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:41,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:41,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049650751] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:41,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [945607562] [2022-12-14 03:09:41,475 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:09:41,475 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:41,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:41,475 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:41,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:41,719 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:42,220 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1986#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (not (<= 0 (+ 2147483647 |ULTIMATE.start_main_#t~post3#1|))) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_#t~post3#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:09:42,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:09:42,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:42,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 26 [2022-12-14 03:09:42,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600891919] [2022-12-14 03:09:42,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:42,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 03:09:42,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 03:09:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1065, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 03:09:42,222 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 27 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 27 states have internal predecessors, (99), 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 03:09:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:42,550 INFO L93 Difference]: Finished difference Result 160 states and 196 transitions. [2022-12-14 03:09:42,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 03:09:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 27 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-12-14 03:09:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:42,553 INFO L225 Difference]: With dead ends: 160 [2022-12-14 03:09:42,553 INFO L226 Difference]: Without dead ends: 159 [2022-12-14 03:09:42,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1587 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=692, Invalid=3730, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 03:09:42,555 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 139 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:42,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 87 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:09:42,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-12-14 03:09:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2022-12-14 03:09:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 148 states have (on average 1.222972972972973) internal successors, (181), 150 states have internal predecessors, (181), 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 03:09:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 181 transitions. [2022-12-14 03:09:42,569 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 181 transitions. Word has length 33 [2022-12-14 03:09:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:42,569 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 181 transitions. [2022-12-14 03:09:42,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.8076923076923075) internal successors, (99), 27 states have internal predecessors, (99), 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 03:09:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 181 transitions. [2022-12-14 03:09:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 03:09:42,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:42,570 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2022-12-14 03:09:42,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 03:09:42,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:42,772 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:42,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:42,773 INFO L85 PathProgramCache]: Analyzing trace with hash -221672567, now seen corresponding path program 1 times [2022-12-14 03:09:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:42,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828865212] [2022-12-14 03:09:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:42,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:42,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828865212] [2022-12-14 03:09:42,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828865212] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641978894] [2022-12-14 03:09:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:42,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:42,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:42,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:42,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 03:09:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:42,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 03:09:42,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:43,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:43,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641978894] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:43,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [276069443] [2022-12-14 03:09:43,221 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:09:43,221 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:43,221 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:43,221 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:43,222 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:43,462 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:44,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2648#(and (<= 0 (+ |ULTIMATE.start_main_~j~0#1| 2147483648)) (<= |ULTIMATE.start_main_~j~0#1| 9) (< 2147483646 |ULTIMATE.start_main_#t~post2#1|) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_#t~post2#1| |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:09:44,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:09:44,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:44,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 32 [2022-12-14 03:09:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280755935] [2022-12-14 03:09:44,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 03:09:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 03:09:44,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1442, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 03:09:44,023 INFO L87 Difference]: Start difference. First operand 151 states and 181 transitions. Second operand has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 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 03:09:44,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:44,166 INFO L93 Difference]: Finished difference Result 200 states and 241 transitions. [2022-12-14 03:09:44,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 03:09:44,167 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 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 36 [2022-12-14 03:09:44,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:44,167 INFO L225 Difference]: With dead ends: 200 [2022-12-14 03:09:44,167 INFO L226 Difference]: Without dead ends: 98 [2022-12-14 03:09:44,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=348, Invalid=2102, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 03:09:44,168 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 66 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:44,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 90 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:09:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-14 03:09:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-14 03:09:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 95 states have (on average 1.168421052631579) internal successors, (111), 97 states have internal predecessors, (111), 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 03:09:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2022-12-14 03:09:44,172 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 36 [2022-12-14 03:09:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:44,173 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2022-12-14 03:09:44,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 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 03:09:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2022-12-14 03:09:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 03:09:44,173 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:44,173 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2022-12-14 03:09:44,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 03:09:44,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 03:09:44,375 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:44,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:44,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1984977422, now seen corresponding path program 2 times [2022-12-14 03:09:44,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:44,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203463194] [2022-12-14 03:09:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:44,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:44,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203463194] [2022-12-14 03:09:44,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203463194] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:44,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659188934] [2022-12-14 03:09:44,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:09:44,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:44,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:44,461 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:44,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 03:09:44,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 03:09:44,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:09:44,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 03:09:44,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:44,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:44,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659188934] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:44,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1535601196] [2022-12-14 03:09:44,602 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:09:44,603 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:44,603 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:44,603 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:44,603 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:44,817 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:45,015 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3269#(and (<= |ULTIMATE.start_main_~j~0#1| 10) (< 2147483645 |ULTIMATE.start_main_~sn~0#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 03:09:45,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:09:45,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:45,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 03:09:45,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280274978] [2022-12-14 03:09:45,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:45,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 03:09:45,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 03:09:45,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-12-14 03:09:45,017 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 13 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 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 03:09:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:45,051 INFO L93 Difference]: Finished difference Result 379 states and 460 transitions. [2022-12-14 03:09:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 03:09:45,051 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 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 42 [2022-12-14 03:09:45,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:45,052 INFO L225 Difference]: With dead ends: 379 [2022-12-14 03:09:45,052 INFO L226 Difference]: Without dead ends: 378 [2022-12-14 03:09:45,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 102 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-12-14 03:09:45,053 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 44 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:45,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 92 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-12-14 03:09:45,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 368. [2022-12-14 03:09:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 365 states have (on average 1.2301369863013698) internal successors, (449), 367 states have internal predecessors, (449), 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 03:09:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 449 transitions. [2022-12-14 03:09:45,066 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 449 transitions. Word has length 42 [2022-12-14 03:09:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:45,066 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 449 transitions. [2022-12-14 03:09:45,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 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 03:09:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 449 transitions. [2022-12-14 03:09:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 03:09:45,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:45,068 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1] [2022-12-14 03:09:45,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 03:09:45,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 03:09:45,269 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1130991817, now seen corresponding path program 2 times [2022-12-14 03:09:45,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:45,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823449130] [2022-12-14 03:09:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:45,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 62 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:45,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:45,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823449130] [2022-12-14 03:09:45,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823449130] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:45,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421639184] [2022-12-14 03:09:45,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:09:45,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:45,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:45,419 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:45,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 03:09:45,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 03:09:45,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:09:45,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:09:45,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-14 03:09:45,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-14 03:09:45,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421639184] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:45,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [449962825] [2022-12-14 03:09:45,770 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:09:45,770 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:45,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:45,770 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:45,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:46,082 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:46,799 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4453#(and (<= 0 (+ |ULTIMATE.start_main_~j~0#1| 2147483648)) (<= |ULTIMATE.start_main_~j~0#1| 9) (< 2147483646 |ULTIMATE.start_main_#t~post2#1|) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_#t~post2#1| |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:09:46,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:09:46,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:46,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 17 [2022-12-14 03:09:46,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480553958] [2022-12-14 03:09:46,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:46,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 03:09:46,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:46,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 03:09:46,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2022-12-14 03:09:46,800 INFO L87 Difference]: Start difference. First operand 368 states and 449 transitions. Second operand has 19 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 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 03:09:47,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:47,159 INFO L93 Difference]: Finished difference Result 368 states and 449 transitions. [2022-12-14 03:09:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 03:09:47,159 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 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 54 [2022-12-14 03:09:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:47,160 INFO L225 Difference]: With dead ends: 368 [2022-12-14 03:09:47,160 INFO L226 Difference]: Without dead ends: 367 [2022-12-14 03:09:47,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 139 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=502, Invalid=2150, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 03:09:47,162 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 70 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:47,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 64 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:09:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-12-14 03:09:47,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 320. [2022-12-14 03:09:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 318 states have (on average 1.1352201257861636) internal successors, (361), 319 states have internal predecessors, (361), 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 03:09:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 361 transitions. [2022-12-14 03:09:47,180 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 361 transitions. Word has length 54 [2022-12-14 03:09:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:47,180 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 361 transitions. [2022-12-14 03:09:47,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 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 03:09:47,181 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 361 transitions. [2022-12-14 03:09:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 03:09:47,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:47,182 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 6, 5, 5, 5, 1, 1, 1] [2022-12-14 03:09:47,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 03:09:47,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 03:09:47,384 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:47,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1005002548, now seen corresponding path program 3 times [2022-12-14 03:09:47,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:47,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887101862] [2022-12-14 03:09:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:47,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:47,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887101862] [2022-12-14 03:09:47,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887101862] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:47,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242926610] [2022-12-14 03:09:47,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 03:09:47,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:47,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:47,758 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:47,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 03:09:47,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 03:09:47,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:09:47,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 03:09:47,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:47,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:48,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242926610] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:48,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2091379903] [2022-12-14 03:09:48,256 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:09:48,256 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:48,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:48,256 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:48,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:48,528 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:49,296 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5841#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (not (<= 0 (+ 2147483647 |ULTIMATE.start_main_#t~post3#1|))) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_#t~post3#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:09:49,297 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:09:49,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:49,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2022-12-14 03:09:49,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992203166] [2022-12-14 03:09:49,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:49,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-14 03:09:49,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:49,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-14 03:09:49,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=2344, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 03:09:49,299 INFO L87 Difference]: Start difference. First operand 320 states and 361 transitions. Second operand has 46 states, 45 states have (on average 3.8222222222222224) internal successors, (172), 45 states have internal predecessors, (172), 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 03:09:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:49,761 INFO L93 Difference]: Finished difference Result 3187 states and 3641 transitions. [2022-12-14 03:09:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-14 03:09:49,762 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.8222222222222224) internal successors, (172), 45 states have internal predecessors, (172), 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 86 [2022-12-14 03:09:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:49,767 INFO L225 Difference]: With dead ends: 3187 [2022-12-14 03:09:49,767 INFO L226 Difference]: Without dead ends: 3186 [2022-12-14 03:09:49,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 215 SyntacticMatches, 10 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2297 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1408, Invalid=4444, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 03:09:49,770 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 224 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:49,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 174 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:09:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2022-12-14 03:09:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 821. [2022-12-14 03:09:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.1294261294261294) internal successors, (925), 820 states have internal predecessors, (925), 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 03:09:49,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 925 transitions. [2022-12-14 03:09:49,818 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 925 transitions. Word has length 86 [2022-12-14 03:09:49,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:49,818 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 925 transitions. [2022-12-14 03:09:49,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.8222222222222224) internal successors, (172), 45 states have internal predecessors, (172), 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 03:09:49,818 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 925 transitions. [2022-12-14 03:09:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 03:09:49,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:49,819 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1] [2022-12-14 03:09:49,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 03:09:50,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 03:09:50,020 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:50,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:50,020 INFO L85 PathProgramCache]: Analyzing trace with hash 694187442, now seen corresponding path program 3 times [2022-12-14 03:09:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:50,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47573726] [2022-12-14 03:09:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:50,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:50,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47573726] [2022-12-14 03:09:50,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47573726] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:50,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850494196] [2022-12-14 03:09:50,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 03:09:50,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:50,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:50,160 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:50,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 03:09:50,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 03:09:50,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:09:50,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 03:09:50,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-14 03:09:50,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:50,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850494196] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:50,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:09:50,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 29 [2022-12-14 03:09:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666361603] [2022-12-14 03:09:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:50,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 03:09:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 03:09:50,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-12-14 03:09:50,497 INFO L87 Difference]: Start difference. First operand 821 states and 925 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 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 03:09:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:50,711 INFO L93 Difference]: Finished difference Result 822 states and 925 transitions. [2022-12-14 03:09:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 03:09:50,711 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 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 96 [2022-12-14 03:09:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:50,712 INFO L225 Difference]: With dead ends: 822 [2022-12-14 03:09:50,712 INFO L226 Difference]: Without dead ends: 171 [2022-12-14 03:09:50,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 03:09:50,715 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:50,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 73 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:09:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-14 03:09:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-12-14 03:09:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.0058823529411764) internal successors, (171), 170 states have internal predecessors, (171), 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 03:09:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2022-12-14 03:09:50,722 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 96 [2022-12-14 03:09:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:50,722 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2022-12-14 03:09:50,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 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 03:09:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2022-12-14 03:09:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-12-14 03:09:50,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:50,724 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 18, 5, 5, 5, 1, 1, 1] [2022-12-14 03:09:50,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 03:09:50,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:50,924 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:50,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1246764212, now seen corresponding path program 4 times [2022-12-14 03:09:50,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:50,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639345647] [2022-12-14 03:09:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 1725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:51,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:09:51,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639345647] [2022-12-14 03:09:51,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639345647] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:09:51,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821706255] [2022-12-14 03:09:51,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 03:09:51,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:51,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:51,900 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:51,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 03:09:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:51,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-14 03:09:51,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 1725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:52,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 1725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:53,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821706255] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:53,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1945854306] [2022-12-14 03:09:53,471 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:09:53,471 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:09:53,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:09:53,471 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:09:53,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:09:53,688 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:09:55,283 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12959#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (not (<= 0 (+ 2147483647 |ULTIMATE.start_main_#t~post3#1|))) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_#t~post3#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:09:55,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:09:55,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:09:55,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 92 [2022-12-14 03:09:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111576972] [2022-12-14 03:09:55,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:55,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-12-14 03:09:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:09:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-12-14 03:09:55,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2378, Invalid=8128, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 03:09:55,287 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand has 94 states, 93 states have (on average 3.6559139784946235) internal successors, (340), 93 states have internal predecessors, (340), 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 03:09:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:56,544 INFO L93 Difference]: Finished difference Result 341 states and 364 transitions. [2022-12-14 03:09:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-12-14 03:09:56,544 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.6559139784946235) internal successors, (340), 93 states have internal predecessors, (340), 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 170 [2022-12-14 03:09:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:56,546 INFO L225 Difference]: With dead ends: 341 [2022-12-14 03:09:56,546 INFO L226 Difference]: Without dead ends: 340 [2022-12-14 03:09:56,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 431 SyntacticMatches, 22 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8693 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5668, Invalid=16384, Unknown=0, NotChecked=0, Total=22052 [2022-12-14 03:09:56,551 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 269 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:56,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 173 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 03:09:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-12-14 03:09:56,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 339. [2022-12-14 03:09:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.0029585798816567) internal successors, (339), 338 states have internal predecessors, (339), 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 03:09:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2022-12-14 03:09:56,561 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 170 [2022-12-14 03:09:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:56,561 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2022-12-14 03:09:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.6559139784946235) internal successors, (340), 93 states have internal predecessors, (340), 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 03:09:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2022-12-14 03:09:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-12-14 03:09:56,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:56,564 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 42, 5, 5, 5, 1, 1, 1] [2022-12-14 03:09:56,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 03:09:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:56,765 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:09:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash -557000780, now seen corresponding path program 5 times [2022-12-14 03:09:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:09:56,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280445537] [2022-12-14 03:09:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:09:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:10:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7449 backedges. 0 proven. 7449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:10:00,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:10:00,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280445537] [2022-12-14 03:10:00,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280445537] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:10:00,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781263156] [2022-12-14 03:10:00,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:10:00,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:10:00,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:10:00,648 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:10:00,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 03:10:00,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 43 check-sat command(s) [2022-12-14 03:10:00,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:10:00,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 03:10:00,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:10:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7449 backedges. 62 proven. 7387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:10:01,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:10:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7449 backedges. 62 proven. 7387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:10:06,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781263156] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:10:06,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [574546079] [2022-12-14 03:10:06,850 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:10:06,850 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:10:06,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:10:06,850 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:10:06,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:10:07,045 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:10:12,457 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16056#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (not (<= 0 (+ 2147483647 |ULTIMATE.start_main_#t~post3#1|))) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_#t~post3#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:10:12,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:10:12,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:10:12,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 96, 96] total 199 [2022-12-14 03:10:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122134649] [2022-12-14 03:10:12,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:10:12,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2022-12-14 03:10:12,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:10:12,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2022-12-14 03:10:12,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8744, Invalid=34728, Unknown=0, NotChecked=0, Total=43472 [2022-12-14 03:10:12,464 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand has 200 states, 199 states have (on average 3.592964824120603) internal successors, (715), 200 states have internal predecessors, (715), 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 03:10:25,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:10:25,672 INFO L93 Difference]: Finished difference Result 649 states and 692 transitions. [2022-12-14 03:10:25,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-12-14 03:10:25,672 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 199 states have (on average 3.592964824120603) internal successors, (715), 200 states have internal predecessors, (715), 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 338 [2022-12-14 03:10:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:10:25,674 INFO L225 Difference]: With dead ends: 649 [2022-12-14 03:10:25,674 INFO L226 Difference]: Without dead ends: 648 [2022-12-14 03:10:25,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1377 GetRequests, 853 SyntacticMatches, 46 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83414 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=47422, Invalid=182498, Unknown=0, NotChecked=0, Total=229920 [2022-12-14 03:10:25,694 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1967 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:10:25,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 117 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 03:10:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-12-14 03:10:25,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 647. [2022-12-14 03:10:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.001547987616099) internal successors, (647), 646 states have internal predecessors, (647), 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 03:10:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 647 transitions. [2022-12-14 03:10:25,712 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 647 transitions. Word has length 338 [2022-12-14 03:10:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:10:25,712 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 647 transitions. [2022-12-14 03:10:25,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 199 states have (on average 3.592964824120603) internal successors, (715), 200 states have internal predecessors, (715), 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 03:10:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 647 transitions. [2022-12-14 03:10:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2022-12-14 03:10:25,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:10:25,722 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 90, 90, 90, 90, 86, 5, 5, 5, 1, 1, 1] [2022-12-14 03:10:25,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 03:10:25,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:10:25,923 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:10:25,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:10:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1041221324, now seen corresponding path program 6 times [2022-12-14 03:10:25,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:10:25,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087351726] [2022-12-14 03:10:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:10:25,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:10:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:10:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 28415 backedges. 0 proven. 28415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:10:40,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:10:40,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087351726] [2022-12-14 03:10:40,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087351726] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:10:40,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404747709] [2022-12-14 03:10:40,005 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 03:10:40,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:10:40,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:10:40,006 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:10:40,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 03:10:40,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 03:10:40,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:10:40,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 183 conjunts are in the unsatisfiable core [2022-12-14 03:10:40,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:10:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 28415 backedges. 0 proven. 28415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:10:40,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:10:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 28415 backedges. 0 proven. 28415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:10:57,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404747709] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:10:57,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1336988173] [2022-12-14 03:10:57,731 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:10:57,731 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:10:57,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:10:57,732 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:10:57,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:10:57,912 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:11:13,560 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22321#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (not (<= 0 (+ 2147483647 |ULTIMATE.start_main_#t~post3#1|))) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_#t~post3#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:11:13,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:11:13,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:11:13,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [182, 182, 182] total 364 [2022-12-14 03:11:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925542690] [2022-12-14 03:11:13,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:11:13,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 366 states [2022-12-14 03:11:13,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 366 interpolants. [2022-12-14 03:11:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34066, Invalid=106184, Unknown=0, NotChecked=0, Total=140250 [2022-12-14 03:11:13,579 INFO L87 Difference]: Start difference. First operand 647 states and 647 transitions. Second operand has 366 states, 365 states have (on average 3.5397260273972604) internal successors, (1292), 365 states have internal predecessors, (1292), 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 03:11:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:36,138 INFO L93 Difference]: Finished difference Result 1293 states and 1384 transitions. [2022-12-14 03:11:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 367 states. [2022-12-14 03:11:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 366 states, 365 states have (on average 3.5397260273972604) internal successors, (1292), 365 states have internal predecessors, (1292), 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 646 [2022-12-14 03:11:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:36,143 INFO L225 Difference]: With dead ends: 1293 [2022-12-14 03:11:36,143 INFO L226 Difference]: Without dead ends: 1292 [2022-12-14 03:11:36,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2300 GetRequests, 1655 SyntacticMatches, 90 SemanticMatches, 555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121097 ImplicationChecksByTransitivity, 52.0s TimeCoverageRelationStatistics Valid=84208, Invalid=225484, Unknown=0, NotChecked=0, Total=309692 [2022-12-14 03:11:36,164 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1841 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:36,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 600 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 03:11:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-12-14 03:11:36,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1291. [2022-12-14 03:11:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1290 states have (on average 1.0007751937984497) internal successors, (1291), 1290 states have internal predecessors, (1291), 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 03:11:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1291 transitions. [2022-12-14 03:11:36,228 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1291 transitions. Word has length 646 [2022-12-14 03:11:36,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:36,229 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1291 transitions. [2022-12-14 03:11:36,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 366 states, 365 states have (on average 3.5397260273972604) internal successors, (1292), 365 states have internal predecessors, (1292), 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 03:11:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1291 transitions. [2022-12-14 03:11:36,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1291 [2022-12-14 03:11:36,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:36,244 INFO L195 NwaCegarLoop]: trace histogram [183, 183, 182, 182, 182, 182, 178, 5, 5, 5, 1, 1, 1] [2022-12-14 03:11:36,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 03:11:36,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 03:11:36,445 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:11:36,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:36,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1429974860, now seen corresponding path program 7 times [2022-12-14 03:11:36,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:36,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613411559] [2022-12-14 03:11:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:36,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:12:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 116045 backedges. 0 proven. 116045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:12:54,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:12:54,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613411559] [2022-12-14 03:12:54,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613411559] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:12:54,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608031428] [2022-12-14 03:12:54,282 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 03:12:54,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:12:54,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:12:54,283 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:12:54,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 03:12:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:12:54,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 367 conjunts are in the unsatisfiable core [2022-12-14 03:12:54,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:12:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 116045 backedges. 0 proven. 116045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:12:55,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:14:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 116045 backedges. 0 proven. 116045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:14:03,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608031428] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:14:03,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1066967693] [2022-12-14 03:14:03,225 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 03:14:03,225 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:14:03,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:14:03,226 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:14:03,226 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 03:14:03,454 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 03:15:01,299 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34112#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (not (<= 0 (+ 2147483647 |ULTIMATE.start_main_#t~post3#1|))) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_#t~post3#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 03:15:01,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 03:15:01,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:15:01,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [366, 366, 366] total 732 [2022-12-14 03:15:01,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009684604] [2022-12-14 03:15:01,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:15:01,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 734 states [2022-12-14 03:15:01,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:15:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 734 interpolants. [2022-12-14 03:15:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135818, Invalid=415488, Unknown=0, NotChecked=0, Total=551306 [2022-12-14 03:15:01,343 INFO L87 Difference]: Start difference. First operand 1291 states and 1291 transitions. Second operand has 734 states, 733 states have (on average 3.519781718963165) internal successors, (2580), 733 states have internal predecessors, (2580), 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 03:17:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:17:45,390 INFO L93 Difference]: Finished difference Result 2581 states and 2764 transitions. [2022-12-14 03:17:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 735 states. [2022-12-14 03:17:45,391 INFO L78 Accepts]: Start accepts. Automaton has has 734 states, 733 states have (on average 3.519781718963165) internal successors, (2580), 733 states have internal predecessors, (2580), 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 1290 [2022-12-14 03:17:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:17:45,396 INFO L225 Difference]: With dead ends: 2581 [2022-12-14 03:17:45,396 INFO L226 Difference]: Without dead ends: 2580 [2022-12-14 03:17:45,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4600 GetRequests, 3311 SyntacticMatches, 182 SemanticMatches, 1107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479253 ImplicationChecksByTransitivity, 205.1s TimeCoverageRelationStatistics Valid=337668, Invalid=891104, Unknown=0, NotChecked=0, Total=1228772 [2022-12-14 03:17:45,461 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3961 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3961 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:17:45,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3961 Valid, 1176 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 03:17:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2022-12-14 03:17:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2579. [2022-12-14 03:17:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2578 states have (on average 1.0003878975950349) internal successors, (2579), 2578 states have internal predecessors, (2579), 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 03:17:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 2579 transitions. [2022-12-14 03:17:45,529 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 2579 transitions. Word has length 1290 [2022-12-14 03:17:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:17:45,530 INFO L495 AbstractCegarLoop]: Abstraction has 2579 states and 2579 transitions. [2022-12-14 03:17:45,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 734 states, 733 states have (on average 3.519781718963165) internal successors, (2580), 733 states have internal predecessors, (2580), 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 03:17:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 2579 transitions. [2022-12-14 03:17:45,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2579 [2022-12-14 03:17:45,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:17:45,571 INFO L195 NwaCegarLoop]: trace histogram [367, 367, 366, 366, 366, 366, 362, 5, 5, 5, 1, 1, 1] [2022-12-14 03:17:45,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-14 03:17:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae117644-40b3-455a-9f7a-55dac929df6b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 03:17:45,773 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 03:17:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:17:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2000502708, now seen corresponding path program 8 times [2022-12-14 03:17:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:17:45,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852083291] [2022-12-14 03:17:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:17:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:17:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat