./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.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_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/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_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/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_954a65a4-0b3e-47a4-9e0b-3aa462249071/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 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 --- 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 15:19:32,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:19:32,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:19:32,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:19:32,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:19:32,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:19:32,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:19:32,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:19:32,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:19:32,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:19:32,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:19:32,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:19:32,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:19:32,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:19:32,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:19:32,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:19:32,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:19:32,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:19:32,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:19:32,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:19:32,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:19:32,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:19:32,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:19:32,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:19:32,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:19:32,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:19:32,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:19:32,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:19:32,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:19:32,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:19:32,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:19:32,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:19:32,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:19:32,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:19:32,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:19:32,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:19:32,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:19:32,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:19:32,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:19:32,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:19:32,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:19:32,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 15:19:32,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:19:32,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:19:32,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:19:32,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:19:32,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:19:32,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:19:32,378 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:19:32,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:19:32,378 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:19:32,379 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:19:32,379 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:19:32,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:19:32,379 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:19:32,379 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:19:32,379 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:19:32,380 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:19:32,380 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:19:32,380 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:19:32,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:19:32,381 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:19:32,381 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 15:19:32,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:19:32,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:19:32,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:19:32,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:19:32,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:19:32,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:19:32,382 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 15:19:32,382 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:19:32,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:19:32,382 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:19:32,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:19:32,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:19:32,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:19:32,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:19:32,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:19:32,383 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:19:32,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:19:32,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:19:32,384 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:19:32,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:19:32,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:19:32,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:19:32,384 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_954a65a4-0b3e-47a4-9e0b-3aa462249071/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 [2022-12-14 15:19:32,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:19:32,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:19:32,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:19:32,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:19:32,601 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:19:32,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2022-12-14 15:19:35,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:19:35,327 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:19:35,327 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2022-12-14 15:19:35,331 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/data/0492d4bbb/489aaafe49104c31a8816d037235ef90/FLAGd8ba82957 [2022-12-14 15:19:35,341 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/data/0492d4bbb/489aaafe49104c31a8816d037235ef90 [2022-12-14 15:19:35,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:19:35,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:19:35,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:19:35,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:19:35,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:19:35,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb2595e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35, skipping insertion in model container [2022-12-14 15:19:35,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:19:35,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:19:35,462 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_954a65a4-0b3e-47a4-9e0b-3aa462249071/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2022-12-14 15:19:35,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:19:35,475 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:19:35,484 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_954a65a4-0b3e-47a4-9e0b-3aa462249071/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2022-12-14 15:19:35,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:19:35,495 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:19:35,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35 WrapperNode [2022-12-14 15:19:35,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:19:35,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:19:35,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:19:35,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:19:35,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,518 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-12-14 15:19:35,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:19:35,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:19:35,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:19:35,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:19:35,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:19:35,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:19:35,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:19:35,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:19:35,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (1/1) ... [2022-12-14 15:19:35,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:19:35,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:35,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:19:35,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:19:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:19:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:19:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:19:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:19:35,646 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:19:35,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:19:35,727 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:19:35,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:19:35,745 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:19:35,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:19:35 BoogieIcfgContainer [2022-12-14 15:19:35,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:19:35,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:19:35,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:19:35,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:19:35,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:19:35" (1/3) ... [2022-12-14 15:19:35,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21be8ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:19:35, skipping insertion in model container [2022-12-14 15:19:35,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:35" (2/3) ... [2022-12-14 15:19:35,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21be8ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:19:35, skipping insertion in model container [2022-12-14 15:19:35,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:19:35" (3/3) ... [2022-12-14 15:19:35,755 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark38_conjunctive.i [2022-12-14 15:19:35,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:19:35,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 15:19:35,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:19:35,814 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;@269e761e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:19:35,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 15:19:35,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:35,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 15:19:35,822 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:35,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 15:19:35,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:35,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2181983, now seen corresponding path program 1 times [2022-12-14 15:19:35,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:35,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167245877] [2022-12-14 15:19:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:35,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:35,958 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 15:19:35,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:35,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167245877] [2022-12-14 15:19:35,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167245877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:19:35,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:19:35,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 15:19:35,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295349691] [2022-12-14 15:19:35,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:19:35,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:19:35,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:19:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:19:35,988 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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 15:19:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:36,016 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-12-14 15:19:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:19:36,018 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 15:19:36,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:36,026 INFO L225 Difference]: With dead ends: 17 [2022-12-14 15:19:36,026 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 15:19:36,029 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 15:19:36,032 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:36,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 15:19:36,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 15:19:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 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 15:19:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-12-14 15:19:36,062 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2022-12-14 15:19:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:36,063 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-12-14 15:19:36,063 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 15:19:36,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-12-14 15:19:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 15:19:36,064 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:36,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 15:19:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:19:36,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:36,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2182862, now seen corresponding path program 1 times [2022-12-14 15:19:36,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:36,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032526988] [2022-12-14 15:19:36,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:36,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:36,104 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 15:19:36,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:36,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032526988] [2022-12-14 15:19:36,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032526988] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:19:36,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:19:36,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:19:36,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310203094] [2022-12-14 15:19:36,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:19:36,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:19:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:36,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:19:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:19:36,108 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 15:19:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:36,129 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-12-14 15:19:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:19:36,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 15:19:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:36,130 INFO L225 Difference]: With dead ends: 25 [2022-12-14 15:19:36,130 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 15:19:36,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:19:36,132 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 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 15:19:36,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:36,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 15:19:36,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2022-12-14 15:19:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-12-14 15:19:36,136 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2022-12-14 15:19:36,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:36,136 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-12-14 15:19:36,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 15:19:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-12-14 15:19:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:19:36,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:36,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:19:36,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:19:36,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:36,138 INFO L85 PathProgramCache]: Analyzing trace with hash 67641523, now seen corresponding path program 1 times [2022-12-14 15:19:36,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:36,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448653795] [2022-12-14 15:19:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:36,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:36,169 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 15:19:36,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:36,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448653795] [2022-12-14 15:19:36,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448653795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:19:36,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:19:36,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:19:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202929142] [2022-12-14 15:19:36,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:19:36,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:19:36,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:36,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:19:36,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:19:36,172 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 15:19:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:36,185 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-12-14 15:19:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:19:36,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 15:19:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:36,186 INFO L225 Difference]: With dead ends: 21 [2022-12-14 15:19:36,186 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 15:19:36,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:19:36,188 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 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 15:19:36,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 15:19:36,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-14 15:19:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 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 15:19:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-12-14 15:19:36,191 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2022-12-14 15:19:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:36,192 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-12-14 15:19:36,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 15:19:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-12-14 15:19:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:19:36,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:36,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:19:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:19:36,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash 67668783, now seen corresponding path program 1 times [2022-12-14 15:19:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:36,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863108786] [2022-12-14 15:19:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:36,221 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 15:19:36,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:36,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863108786] [2022-12-14 15:19:36,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863108786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:19:36,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:19:36,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:19:36,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675897451] [2022-12-14 15:19:36,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:19:36,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:19:36,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:36,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:19:36,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:19:36,224 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 15:19:36,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:36,240 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-12-14 15:19:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:19:36,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 15:19:36,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:36,241 INFO L225 Difference]: With dead ends: 24 [2022-12-14 15:19:36,241 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 15:19:36,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:19:36,243 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:36,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 15:19:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2022-12-14 15:19:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-12-14 15:19:36,249 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2022-12-14 15:19:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:36,249 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-12-14 15:19:36,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 15:19:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-12-14 15:19:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 15:19:36,250 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:36,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 15:19:36,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 15:19:36,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2096887265, now seen corresponding path program 1 times [2022-12-14 15:19:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:36,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401150989] [2022-12-14 15:19:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:36,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:36,297 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 15:19:36,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:36,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401150989] [2022-12-14 15:19:36,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401150989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:19:36,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:19:36,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:19:36,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100009855] [2022-12-14 15:19:36,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:19:36,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:19:36,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:36,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:19:36,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:19:36,300 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:36,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:36,324 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-12-14 15:19:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:19:36,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 15:19:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:36,325 INFO L225 Difference]: With dead ends: 17 [2022-12-14 15:19:36,325 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 15:19:36,325 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 15:19:36,326 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:36,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 15:19:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 15:19:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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 15:19:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 15:19:36,330 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2022-12-14 15:19:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:36,330 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 15:19:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 15:19:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 15:19:36,330 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:36,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:19:36,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 15:19:36,331 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:36,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash 578995829, now seen corresponding path program 1 times [2022-12-14 15:19:36,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:36,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753637042] [2022-12-14 15:19:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:36,367 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 15:19:36,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:36,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753637042] [2022-12-14 15:19:36,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753637042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:19:36,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:19:36,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:19:36,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774640626] [2022-12-14 15:19:36,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:19:36,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:19:36,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:19:36,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:19:36,369 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:36,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:36,393 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-12-14 15:19:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:19:36,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 15:19:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:36,394 INFO L225 Difference]: With dead ends: 18 [2022-12-14 15:19:36,394 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 15:19:36,395 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 15:19:36,396 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:36,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 15:19:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 15:19:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-12-14 15:19:36,400 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2022-12-14 15:19:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:36,400 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-12-14 15:19:36,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-12-14 15:19:36,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 15:19:36,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:36,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 15:19:36,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 15:19:36,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash 276126747, now seen corresponding path program 1 times [2022-12-14 15:19:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:36,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764987069] [2022-12-14 15:19:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:36,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:36,446 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 15:19:36,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:36,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764987069] [2022-12-14 15:19:36,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764987069] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:36,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814529598] [2022-12-14 15:19:36,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:36,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:36,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:36,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:36,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:19:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:36,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:19:36,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:36,535 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 15:19:36,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:36,567 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 15:19:36,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814529598] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:36,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1675463307] [2022-12-14 15:19:36,583 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:19:36,583 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:36,586 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:36,590 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:36,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:36,811 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:36,979 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '346#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 15:19:36,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:36,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:36,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-14 15:19:36,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059746574] [2022-12-14 15:19:36,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:36,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 15:19:36,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 15:19:36,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-14 15:19:36,981 INFO L87 Difference]: Start difference. First operand 17 states and 17 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 15:19:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:37,006 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-12-14 15:19:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:19:37,006 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 10 [2022-12-14 15:19:37,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:37,007 INFO L225 Difference]: With dead ends: 42 [2022-12-14 15:19:37,007 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 15:19:37,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-14 15:19:37,008 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 31 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 15:19:37,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 31 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 15:19:37,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2022-12-14 15:19:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-12-14 15:19:37,014 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2022-12-14 15:19:37,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:37,014 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-12-14 15:19:37,014 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 15:19:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-12-14 15:19:37,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 15:19:37,019 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:37,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:19:37,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:19:37,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:37,221 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:37,222 INFO L85 PathProgramCache]: Analyzing trace with hash 276154007, now seen corresponding path program 1 times [2022-12-14 15:19:37,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:37,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115098209] [2022-12-14 15:19:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:37,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:37,301 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 15:19:37,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:37,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115098209] [2022-12-14 15:19:37,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115098209] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:37,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849804367] [2022-12-14 15:19:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:37,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:37,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:37,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:37,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:19:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:37,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:19:37,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:37,364 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 15:19:37,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:37,390 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 15:19:37,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849804367] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:37,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1099066105] [2022-12-14 15:19:37,393 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 15:19:37,393 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:37,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:37,394 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:37,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:37,533 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:37,766 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '495#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-12-14 15:19:37,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:37,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:37,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 15:19:37,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782656572] [2022-12-14 15:19:37,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:37,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 15:19:37,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:37,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 15:19:37,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-14 15:19:37,767 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 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 15:19:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:37,814 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-12-14 15:19:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 15:19:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 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 10 [2022-12-14 15:19:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:37,815 INFO L225 Difference]: With dead ends: 37 [2022-12-14 15:19:37,815 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 15:19:37,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-14 15:19:37,816 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:37,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 15:19:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-12-14 15:19:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-12-14 15:19:37,821 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 10 [2022-12-14 15:19:37,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:37,821 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-12-14 15:19:37,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 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 15:19:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-12-14 15:19:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 15:19:37,822 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:37,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2022-12-14 15:19:37,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 15:19:38,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 15:19:38,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:38,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:38,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1884514165, now seen corresponding path program 1 times [2022-12-14 15:19:38,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:38,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705951521] [2022-12-14 15:19:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:38,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:38,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:38,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705951521] [2022-12-14 15:19:38,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705951521] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:38,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586815912] [2022-12-14 15:19:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:38,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:38,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:38,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:38,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:19:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:38,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 15:19:38,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:38,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:38,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586815912] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:38,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [660628702] [2022-12-14 15:19:38,330 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:19:38,331 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:38,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:38,331 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:38,331 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:38,468 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:38,642 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '691#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 15:19:38,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:38,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:38,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-14 15:19:38,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264902556] [2022-12-14 15:19:38,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:38,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 15:19:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:38,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 15:19:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-12-14 15:19:38,645 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:38,746 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2022-12-14 15:19:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 15:19:38,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 15:19:38,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:38,748 INFO L225 Difference]: With dead ends: 54 [2022-12-14 15:19:38,748 INFO L226 Difference]: Without dead ends: 53 [2022-12-14 15:19:38,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-12-14 15:19:38,749 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:38,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:38,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-14 15:19:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2022-12-14 15:19:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.205128205128205) internal successors, (47), 41 states have internal predecessors, (47), 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 15:19:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-12-14 15:19:38,755 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 17 [2022-12-14 15:19:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:38,755 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-12-14 15:19:38,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-12-14 15:19:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 15:19:38,755 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:38,755 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 15:19:38,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 15:19:38,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 15:19:38,957 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:38,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:38,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2044036503, now seen corresponding path program 2 times [2022-12-14 15:19:38,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:38,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836875492] [2022-12-14 15:19:38,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:38,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:39,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:39,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836875492] [2022-12-14 15:19:39,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836875492] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:39,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901635748] [2022-12-14 15:19:39,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:19:39,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:39,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:39,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:39,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:19:39,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 15:19:39,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:19:39,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 15:19:39,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:39,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:39,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901635748] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:39,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1660644462] [2022-12-14 15:19:39,254 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 15:19:39,255 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:39,255 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:39,255 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:39,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:39,411 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:39,682 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '948#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-12-14 15:19:39,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:39,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:39,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-12-14 15:19:39,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371523953] [2022-12-14 15:19:39,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:39,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 15:19:39,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 15:19:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-12-14 15:19:39,684 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 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 15:19:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:39,781 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-12-14 15:19:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 15:19:39,781 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 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 15:19:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:39,782 INFO L225 Difference]: With dead ends: 60 [2022-12-14 15:19:39,782 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 15:19:39,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-12-14 15:19:39,783 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 47 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:39,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 44 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 15:19:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2022-12-14 15:19:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 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 15:19:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-12-14 15:19:39,787 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 20 [2022-12-14 15:19:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:39,788 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-12-14 15:19:39,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 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 15:19:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-12-14 15:19:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 15:19:39,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:39,789 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2022-12-14 15:19:39,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:19:39,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:39,990 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1490246989, now seen corresponding path program 2 times [2022-12-14 15:19:39,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:39,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373458867] [2022-12-14 15:19:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:39,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:40,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:40,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373458867] [2022-12-14 15:19:40,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373458867] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:40,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454575482] [2022-12-14 15:19:40,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:19:40,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:40,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:40,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:40,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 15:19:40,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 15:19:40,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:19:40,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 15:19:40,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:40,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:40,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454575482] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:40,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [962096066] [2022-12-14 15:19:40,208 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:19:40,209 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:40,209 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:40,209 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:40,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:40,298 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:40,451 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1240#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 15:19:40,451 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:40,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:40,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-14 15:19:40,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934273984] [2022-12-14 15:19:40,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:40,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 15:19:40,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 15:19:40,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-12-14 15:19:40,453 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:40,481 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-12-14 15:19:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 15:19:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 15:19:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:40,483 INFO L225 Difference]: With dead ends: 73 [2022-12-14 15:19:40,483 INFO L226 Difference]: Without dead ends: 72 [2022-12-14 15:19:40,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-12-14 15:19:40,484 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:40,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 53 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-14 15:19:40,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2022-12-14 15:19:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 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 15:19:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-12-14 15:19:40,490 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 25 [2022-12-14 15:19:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:40,490 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-12-14 15:19:40,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:19:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-12-14 15:19:40,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 15:19:40,491 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:40,491 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1] [2022-12-14 15:19:40,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 15:19:40,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:40,693 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:40,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:40,694 INFO L85 PathProgramCache]: Analyzing trace with hash 113568117, now seen corresponding path program 2 times [2022-12-14 15:19:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:40,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007201708] [2022-12-14 15:19:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:40,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:40,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:40,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007201708] [2022-12-14 15:19:40,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007201708] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:40,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262080087] [2022-12-14 15:19:40,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:19:40,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:40,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:40,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:40,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 15:19:40,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 15:19:40,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:19:40,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 15:19:40,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:41,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:41,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262080087] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:41,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2005360605] [2022-12-14 15:19:41,186 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:19:41,186 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:41,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:41,186 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:41,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:41,261 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:41,547 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1646#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 15:19:41,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:41,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:41,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2022-12-14 15:19:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959917261] [2022-12-14 15:19:41,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:41,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 15:19:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:41,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 15:19:41,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 15:19:41,550 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 30 states have internal predecessors, (73), 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 15:19:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:41,747 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-12-14 15:19:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 15:19:41,748 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 30 states have internal predecessors, (73), 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 37 [2022-12-14 15:19:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:41,748 INFO L225 Difference]: With dead ends: 108 [2022-12-14 15:19:41,748 INFO L226 Difference]: Without dead ends: 107 [2022-12-14 15:19:41,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=582, Invalid=1770, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 15:19:41,750 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 108 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:41,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 54 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:19:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-14 15:19:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2022-12-14 15:19:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 81 states have internal predecessors, (93), 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 15:19:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2022-12-14 15:19:41,757 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 37 [2022-12-14 15:19:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:41,757 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2022-12-14 15:19:41,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 30 states have internal predecessors, (73), 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 15:19:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2022-12-14 15:19:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 15:19:41,758 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:41,758 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2022-12-14 15:19:41,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 15:19:41,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 15:19:41,959 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:41,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1126382697, now seen corresponding path program 3 times [2022-12-14 15:19:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:41,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737051637] [2022-12-14 15:19:41,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:41,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:42,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:42,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737051637] [2022-12-14 15:19:42,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737051637] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:42,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855156858] [2022-12-14 15:19:42,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:19:42,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:42,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:42,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 15:19:42,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:19:42,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:19:42,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 15:19:42,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:42,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:42,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855156858] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1531375935] [2022-12-14 15:19:42,399 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 15:19:42,400 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:42,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:42,400 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:42,400 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:42,490 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:42,791 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2165#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-12-14 15:19:42,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:42,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:42,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-12-14 15:19:42,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058203445] [2022-12-14 15:19:42,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:42,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 15:19:42,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:42,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 15:19:42,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 15:19:42,792 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 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 15:19:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:42,964 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2022-12-14 15:19:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 15:19:42,964 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 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 40 [2022-12-14 15:19:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:42,965 INFO L225 Difference]: With dead ends: 110 [2022-12-14 15:19:42,965 INFO L226 Difference]: Without dead ends: 93 [2022-12-14 15:19:42,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 91 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=637, Invalid=1913, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 15:19:42,966 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 132 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:42,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 60 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-14 15:19:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2022-12-14 15:19:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.0875) internal successors, (87), 82 states have internal predecessors, (87), 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 15:19:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-12-14 15:19:42,970 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 40 [2022-12-14 15:19:42,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:42,970 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-12-14 15:19:42,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 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 15:19:42,970 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-12-14 15:19:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 15:19:42,970 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:42,971 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2022-12-14 15:19:42,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 15:19:43,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:43,172 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:43,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:43,174 INFO L85 PathProgramCache]: Analyzing trace with hash 172754355, now seen corresponding path program 3 times [2022-12-14 15:19:43,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:43,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985122602] [2022-12-14 15:19:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:43,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:43,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:43,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985122602] [2022-12-14 15:19:43,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985122602] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:43,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631745685] [2022-12-14 15:19:43,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:19:43,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:43,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:43,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:43,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 15:19:43,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:19:43,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:19:43,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 15:19:43,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:43,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:43,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631745685] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:43,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [11514616] [2022-12-14 15:19:43,576 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:19:43,576 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:43,577 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:43,577 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:43,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:43,665 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:43,947 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2771#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 15:19:43,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:43,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:43,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-12-14 15:19:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107481475] [2022-12-14 15:19:43,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:43,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 15:19:43,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 15:19:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2022-12-14 15:19:43,948 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 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 15:19:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:43,999 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2022-12-14 15:19:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 15:19:43,999 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 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 55 [2022-12-14 15:19:44,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:44,000 INFO L225 Difference]: With dead ends: 149 [2022-12-14 15:19:44,000 INFO L226 Difference]: Without dead ends: 148 [2022-12-14 15:19:44,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 138 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2022-12-14 15:19:44,001 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 50 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:44,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 98 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:19:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-14 15:19:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2022-12-14 15:19:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 117 states have (on average 1.1452991452991452) internal successors, (134), 119 states have internal predecessors, (134), 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 15:19:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2022-12-14 15:19:44,009 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 55 [2022-12-14 15:19:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:44,009 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2022-12-14 15:19:44,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 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 15:19:44,010 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2022-12-14 15:19:44,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 15:19:44,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:44,011 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 1, 1, 1] [2022-12-14 15:19:44,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 15:19:44,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 15:19:44,213 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1901531787, now seen corresponding path program 3 times [2022-12-14 15:19:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:44,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810852103] [2022-12-14 15:19:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:44,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:44,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:44,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810852103] [2022-12-14 15:19:44,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810852103] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:44,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005113173] [2022-12-14 15:19:44,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:19:44,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:44,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:44,646 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:44,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 15:19:44,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:19:44,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:19:44,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 15:19:44,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:44,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:45,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005113173] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:45,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1577238985] [2022-12-14 15:19:45,275 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:19:45,276 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:45,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:45,276 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:45,276 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:45,340 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:45,816 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3609#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 15:19:45,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:45,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:45,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2022-12-14 15:19:45,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595126739] [2022-12-14 15:19:45,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:45,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-12-14 15:19:45,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-12-14 15:19:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=3417, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 15:19:45,818 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 62 states have internal predecessors, (153), 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 15:19:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:46,315 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2022-12-14 15:19:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-14 15:19:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 62 states have internal predecessors, (153), 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 77 [2022-12-14 15:19:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:46,316 INFO L225 Difference]: With dead ends: 216 [2022-12-14 15:19:46,316 INFO L226 Difference]: Without dead ends: 215 [2022-12-14 15:19:46,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 180 SyntacticMatches, 15 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3420 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2430, Invalid=6882, Unknown=0, NotChecked=0, Total=9312 [2022-12-14 15:19:46,318 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 237 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:46,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 96 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:19:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-12-14 15:19:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 162. [2022-12-14 15:19:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 159 states have (on average 1.1635220125786163) internal successors, (185), 161 states have internal predecessors, (185), 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 15:19:46,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2022-12-14 15:19:46,323 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 77 [2022-12-14 15:19:46,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:46,323 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2022-12-14 15:19:46,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 62 states have internal predecessors, (153), 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 15:19:46,323 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2022-12-14 15:19:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 15:19:46,324 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:46,324 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2022-12-14 15:19:46,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 15:19:46,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 15:19:46,526 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2085240727, now seen corresponding path program 4 times [2022-12-14 15:19:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:46,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65955404] [2022-12-14 15:19:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:46,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:46,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:46,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65955404] [2022-12-14 15:19:46,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65955404] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:46,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582416587] [2022-12-14 15:19:46,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 15:19:46,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:46,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:46,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:46,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 15:19:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:46,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 15:19:46,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:47,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:47,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582416587] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:47,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078493522] [2022-12-14 15:19:47,759 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 15:19:47,759 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:47,759 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:47,760 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:47,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:47,845 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:48,309 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4652#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-12-14 15:19:48,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:48,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:48,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2022-12-14 15:19:48,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079137821] [2022-12-14 15:19:48,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:48,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-14 15:19:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-14 15:19:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1070, Invalid=3622, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 15:19:48,311 INFO L87 Difference]: Start difference. First operand 162 states and 185 transitions. Second operand has 64 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 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 15:19:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:48,810 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2022-12-14 15:19:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-14 15:19:48,811 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 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 80 [2022-12-14 15:19:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:48,812 INFO L225 Difference]: With dead ends: 210 [2022-12-14 15:19:48,812 INFO L226 Difference]: Without dead ends: 177 [2022-12-14 15:19:48,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 187 SyntacticMatches, 16 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2541, Invalid=7161, Unknown=0, NotChecked=0, Total=9702 [2022-12-14 15:19:48,813 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 282 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:48,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 110 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:19:48,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-14 15:19:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2022-12-14 15:19:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 160 states have (on average 1.06875) internal successors, (171), 162 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 15:19:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2022-12-14 15:19:48,818 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 80 [2022-12-14 15:19:48,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:48,818 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2022-12-14 15:19:48,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 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 15:19:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2022-12-14 15:19:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 15:19:48,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:48,819 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1] [2022-12-14 15:19:48,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 15:19:49,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 15:19:49,021 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:49,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:49,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1112345523, now seen corresponding path program 4 times [2022-12-14 15:19:49,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:49,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029152772] [2022-12-14 15:19:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:49,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:49,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:49,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029152772] [2022-12-14 15:19:49,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029152772] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:49,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874293331] [2022-12-14 15:19:49,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 15:19:49,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:49,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:49,386 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:49,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 15:19:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:49,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 15:19:49,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:49,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:50,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874293331] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:50,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [720765710] [2022-12-14 15:19:50,037 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:19:50,037 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:50,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:50,037 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:50,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:50,112 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:50,597 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5886#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 15:19:50,597 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:50,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:50,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-12-14 15:19:50,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625666796] [2022-12-14 15:19:50,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:50,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 15:19:50,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 15:19:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 15:19:50,599 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 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 15:19:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:50,702 INFO L93 Difference]: Finished difference Result 301 states and 324 transitions. [2022-12-14 15:19:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 15:19:50,703 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 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 115 [2022-12-14 15:19:50,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:50,704 INFO L225 Difference]: With dead ends: 301 [2022-12-14 15:19:50,704 INFO L226 Difference]: Without dead ends: 300 [2022-12-14 15:19:50,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 15:19:50,705 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 154 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:50,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 203 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:19:50,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-12-14 15:19:50,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 240. [2022-12-14 15:19:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 237 states have (on average 1.139240506329114) internal successors, (270), 239 states have internal predecessors, (270), 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 15:19:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 270 transitions. [2022-12-14 15:19:50,710 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 270 transitions. Word has length 115 [2022-12-14 15:19:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:50,710 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 270 transitions. [2022-12-14 15:19:50,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 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 15:19:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 270 transitions. [2022-12-14 15:19:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 15:19:50,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:50,712 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 1, 1, 1] [2022-12-14 15:19:50,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 15:19:50,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 15:19:50,913 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash -394988171, now seen corresponding path program 4 times [2022-12-14 15:19:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:50,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345078867] [2022-12-14 15:19:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:50,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:52,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:52,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345078867] [2022-12-14 15:19:52,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345078867] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:52,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479205851] [2022-12-14 15:19:52,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 15:19:52,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:52,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:52,168 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:52,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 15:19:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:52,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-14 15:19:52,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:52,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:19:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:54,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479205851] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:19:54,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1009872094] [2022-12-14 15:19:54,688 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:19:54,688 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:19:54,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:19:54,688 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:19:54,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:19:54,758 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:19:56,085 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7588#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 15:19:56,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:19:56,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:19:56,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 125 [2022-12-14 15:19:56,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720391806] [2022-12-14 15:19:56,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:19:56,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-12-14 15:19:56,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:19:56,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-12-14 15:19:56,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4045, Invalid=12985, Unknown=0, NotChecked=0, Total=17030 [2022-12-14 15:19:56,090 INFO L87 Difference]: Start difference. First operand 240 states and 270 transitions. Second operand has 126 states, 125 states have (on average 2.504) internal successors, (313), 126 states have internal predecessors, (313), 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 15:19:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:19:58,016 INFO L93 Difference]: Finished difference Result 432 states and 463 transitions. [2022-12-14 15:19:58,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-12-14 15:19:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 2.504) internal successors, (313), 126 states have internal predecessors, (313), 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 157 [2022-12-14 15:19:58,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:19:58,018 INFO L225 Difference]: With dead ends: 432 [2022-12-14 15:19:58,018 INFO L226 Difference]: Without dead ends: 431 [2022-12-14 15:19:58,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 372 SyntacticMatches, 31 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14028 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9966, Invalid=27090, Unknown=0, NotChecked=0, Total=37056 [2022-12-14 15:19:58,021 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 870 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:19:58,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 175 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:19:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-12-14 15:19:58,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 322. [2022-12-14 15:19:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 319 states have (on average 1.1567398119122256) internal successors, (369), 321 states have internal predecessors, (369), 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 15:19:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 369 transitions. [2022-12-14 15:19:58,028 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 369 transitions. Word has length 157 [2022-12-14 15:19:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:19:58,029 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 369 transitions. [2022-12-14 15:19:58,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 2.504) internal successors, (313), 126 states have internal predecessors, (313), 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 15:19:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 369 transitions. [2022-12-14 15:19:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-14 15:19:58,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:19:58,030 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2022-12-14 15:19:58,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 15:19:58,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 15:19:58,231 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:19:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:19:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1117861783, now seen corresponding path program 5 times [2022-12-14 15:19:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:19:58,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273079766] [2022-12-14 15:19:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:19:58,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:19:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:19:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:59,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:19:59,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273079766] [2022-12-14 15:19:59,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273079766] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:19:59,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772041646] [2022-12-14 15:19:59,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:19:59,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:19:59,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:19:59,575 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:19:59,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 15:19:59,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-12-14 15:19:59,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:19:59,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-14 15:19:59,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:19:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:19:59,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:20:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:01,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772041646] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:20:01,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [552966569] [2022-12-14 15:20:01,967 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 15:20:01,967 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:20:01,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:20:01,967 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:20:01,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:20:02,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:20:03,294 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9679#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-12-14 15:20:03,294 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:20:03,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:20:03,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2022-12-14 15:20:03,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732689280] [2022-12-14 15:20:03,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:20:03,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-12-14 15:20:03,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:20:03,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-12-14 15:20:03,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4174, Invalid=13382, Unknown=0, NotChecked=0, Total=17556 [2022-12-14 15:20:03,297 INFO L87 Difference]: Start difference. First operand 322 states and 369 transitions. Second operand has 128 states, 127 states have (on average 2.5118110236220472) internal successors, (319), 128 states have internal predecessors, (319), 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 15:20:05,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:20:05,490 INFO L93 Difference]: Finished difference Result 410 states and 441 transitions. [2022-12-14 15:20:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-12-14 15:20:05,491 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.5118110236220472) internal successors, (319), 128 states have internal predecessors, (319), 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 160 [2022-12-14 15:20:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:20:05,493 INFO L225 Difference]: With dead ends: 410 [2022-12-14 15:20:05,493 INFO L226 Difference]: Without dead ends: 345 [2022-12-14 15:20:05,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 379 SyntacticMatches, 32 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14506 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=10189, Invalid=27641, Unknown=0, NotChecked=0, Total=37830 [2022-12-14 15:20:05,496 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 657 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:20:05,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 188 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:20:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-12-14 15:20:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2022-12-14 15:20:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 320 states have (on average 1.059375) internal successors, (339), 322 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 15:20:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 339 transitions. [2022-12-14 15:20:05,503 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 339 transitions. Word has length 160 [2022-12-14 15:20:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:20:05,504 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 339 transitions. [2022-12-14 15:20:05,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.5118110236220472) internal successors, (319), 128 states have internal predecessors, (319), 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 15:20:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 339 transitions. [2022-12-14 15:20:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-14 15:20:05,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:20:05,505 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1] [2022-12-14 15:20:05,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 15:20:05,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:20:05,707 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:20:05,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:20:05,708 INFO L85 PathProgramCache]: Analyzing trace with hash -627566669, now seen corresponding path program 5 times [2022-12-14 15:20:05,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:20:05,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968128145] [2022-12-14 15:20:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:20:05,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:20:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:20:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:06,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:20:06,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968128145] [2022-12-14 15:20:06,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968128145] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:20:06,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449824218] [2022-12-14 15:20:06,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:20:06,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:20:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:20:06,774 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:20:06,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 15:20:07,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 15:20:07,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:20:07,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-14 15:20:07,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:20:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:07,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:20:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:09,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449824218] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:20:09,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1566294661] [2022-12-14 15:20:09,120 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:20:09,120 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:20:09,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:20:09,120 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:20:09,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:20:09,175 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:20:10,351 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12169#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 15:20:10,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:20:10,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:20:10,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-12-14 15:20:10,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854077279] [2022-12-14 15:20:10,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:20:10,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 15:20:10,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:20:10,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 15:20:10,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4573, Invalid=5527, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 15:20:10,355 INFO L87 Difference]: Start difference. First operand 323 states and 339 transitions. Second operand has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 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 15:20:10,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:20:10,647 INFO L93 Difference]: Finished difference Result 605 states and 652 transitions. [2022-12-14 15:20:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 15:20:10,648 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 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 235 [2022-12-14 15:20:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:20:10,649 INFO L225 Difference]: With dead ends: 605 [2022-12-14 15:20:10,649 INFO L226 Difference]: Without dead ends: 604 [2022-12-14 15:20:10,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 606 SyntacticMatches, 46 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7136 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4573, Invalid=5527, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 15:20:10,650 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 338 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:20:10,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 389 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:20:10,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-12-14 15:20:10,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 480. [2022-12-14 15:20:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 477 states have (on average 1.1362683438155137) internal successors, (542), 479 states have internal predecessors, (542), 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 15:20:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 542 transitions. [2022-12-14 15:20:10,659 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 542 transitions. Word has length 235 [2022-12-14 15:20:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:20:10,660 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 542 transitions. [2022-12-14 15:20:10,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 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 15:20:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 542 transitions. [2022-12-14 15:20:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-12-14 15:20:10,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:20:10,662 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 62, 1, 1, 1] [2022-12-14 15:20:10,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 15:20:10,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:20:10,864 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:20:10,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:20:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1273166475, now seen corresponding path program 5 times [2022-12-14 15:20:10,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:20:10,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651021139] [2022-12-14 15:20:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:20:10,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:20:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:20:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 0 proven. 9765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:16,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:20:16,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651021139] [2022-12-14 15:20:16,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651021139] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:20:16,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264050698] [2022-12-14 15:20:16,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:20:16,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:20:16,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:20:16,056 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:20:16,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 15:20:16,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-12-14 15:20:16,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:20:16,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 127 conjunts are in the unsatisfiable core [2022-12-14 15:20:16,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:20:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 0 proven. 9765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:16,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:20:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 0 proven. 9765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:24,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264050698] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:20:24,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [860737358] [2022-12-14 15:20:24,758 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:20:24,758 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:20:24,758 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:20:24,758 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:20:24,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:20:24,824 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:20:28,795 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15599#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 15:20:28,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:20:28,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:20:28,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 253 [2022-12-14 15:20:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678094381] [2022-12-14 15:20:28,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:20:28,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 254 states [2022-12-14 15:20:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:20:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2022-12-14 15:20:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16269, Invalid=50553, Unknown=0, NotChecked=0, Total=66822 [2022-12-14 15:20:28,803 INFO L87 Difference]: Start difference. First operand 480 states and 542 transitions. Second operand has 254 states, 253 states have (on average 2.5019762845849804) internal successors, (633), 254 states have internal predecessors, (633), 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 15:20:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:20:38,294 INFO L93 Difference]: Finished difference Result 864 states and 927 transitions. [2022-12-14 15:20:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-12-14 15:20:38,295 INFO L78 Accepts]: Start accepts. Automaton has has 254 states, 253 states have (on average 2.5019762845849804) internal successors, (633), 254 states have internal predecessors, (633), 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 317 [2022-12-14 15:20:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:20:38,297 INFO L225 Difference]: With dead ends: 864 [2022-12-14 15:20:38,297 INFO L226 Difference]: Without dead ends: 863 [2022-12-14 15:20:38,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 756 SyntacticMatches, 63 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56748 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=40398, Invalid=107442, Unknown=0, NotChecked=0, Total=147840 [2022-12-14 15:20:38,303 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1997 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 15:20:38,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 338 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 15:20:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-12-14 15:20:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 642. [2022-12-14 15:20:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 639 states have (on average 1.1533646322378717) internal successors, (737), 641 states have internal predecessors, (737), 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 15:20:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 737 transitions. [2022-12-14 15:20:38,315 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 737 transitions. Word has length 317 [2022-12-14 15:20:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:20:38,316 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 737 transitions. [2022-12-14 15:20:38,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 254 states, 253 states have (on average 2.5019762845849804) internal successors, (633), 254 states have internal predecessors, (633), 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 15:20:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 737 transitions. [2022-12-14 15:20:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-12-14 15:20:38,318 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:20:38,318 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2022-12-14 15:20:38,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 15:20:38,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 15:20:38,520 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:20:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:20:38,521 INFO L85 PathProgramCache]: Analyzing trace with hash -46192745, now seen corresponding path program 6 times [2022-12-14 15:20:38,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:20:38,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85412962] [2022-12-14 15:20:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:20:38,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:20:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:20:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:44,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:20:44,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85412962] [2022-12-14 15:20:44,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85412962] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:20:44,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012836663] [2022-12-14 15:20:44,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:20:44,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:20:44,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:20:44,356 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:20:44,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 15:20:44,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:20:44,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:20:44,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 128 conjunts are in the unsatisfiable core [2022-12-14 15:20:44,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:20:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:44,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:20:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:52,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012836663] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:20:52,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1270768022] [2022-12-14 15:20:52,982 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 15:20:52,982 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:20:52,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:20:52,982 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:20:52,982 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:20:53,072 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:20:56,388 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19786#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-12-14 15:20:56,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:20:56,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:20:56,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 255 [2022-12-14 15:20:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731139578] [2022-12-14 15:20:56,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:20:56,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2022-12-14 15:20:56,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:20:56,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2022-12-14 15:20:56,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16526, Invalid=51334, Unknown=0, NotChecked=0, Total=67860 [2022-12-14 15:20:56,394 INFO L87 Difference]: Start difference. First operand 642 states and 737 transitions. Second operand has 256 states, 255 states have (on average 2.5058823529411764) internal successors, (639), 256 states have internal predecessors, (639), 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 15:21:04,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:21:04,612 INFO L93 Difference]: Finished difference Result 810 states and 873 transitions. [2022-12-14 15:21:04,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2022-12-14 15:21:04,613 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 2.5058823529411764) internal successors, (639), 256 states have internal predecessors, (639), 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 320 [2022-12-14 15:21:04,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:21:04,614 INFO L225 Difference]: With dead ends: 810 [2022-12-14 15:21:04,614 INFO L226 Difference]: Without dead ends: 681 [2022-12-14 15:21:04,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 763 SyntacticMatches, 64 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57706 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=40845, Invalid=108537, Unknown=0, NotChecked=0, Total=149382 [2022-12-14 15:21:04,621 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1437 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:21:04,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 339 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 15:21:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-12-14 15:21:04,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 643. [2022-12-14 15:21:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 640 states have (on average 1.0546875) internal successors, (675), 642 states have internal predecessors, (675), 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 15:21:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 675 transitions. [2022-12-14 15:21:04,633 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 675 transitions. Word has length 320 [2022-12-14 15:21:04,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:21:04,633 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 675 transitions. [2022-12-14 15:21:04,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 255 states have (on average 2.5058823529411764) internal successors, (639), 256 states have internal predecessors, (639), 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 15:21:04,634 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 675 transitions. [2022-12-14 15:21:04,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-12-14 15:21:04,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:21:04,635 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1] [2022-12-14 15:21:04,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 15:21:04,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 15:21:04,837 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:21:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:21:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash 374484915, now seen corresponding path program 6 times [2022-12-14 15:21:04,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:21:04,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771194960] [2022-12-14 15:21:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:21:04,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:21:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:21:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:09,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:21:09,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771194960] [2022-12-14 15:21:09,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771194960] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:21:09,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237495919] [2022-12-14 15:21:09,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:21:09,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:21:09,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:21:09,196 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:21:09,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 15:21:09,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:21:09,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:21:09,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 97 conjunts are in the unsatisfiable core [2022-12-14 15:21:09,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:21:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:09,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:21:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:16,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237495919] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:21:16,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [141723360] [2022-12-14 15:21:16,076 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:21:16,076 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:21:16,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:21:16,077 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:21:16,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:21:16,146 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:21:21,212 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24788#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 15:21:21,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:21:21,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:21:21,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-12-14 15:21:21,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202961992] [2022-12-14 15:21:21,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:21:21,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 15:21:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:21:21,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 15:21:21,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18349, Invalid=20263, Unknown=0, NotChecked=0, Total=38612 [2022-12-14 15:21:21,217 INFO L87 Difference]: Start difference. First operand 643 states and 675 transitions. Second operand has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 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 15:21:22,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:21:22,472 INFO L93 Difference]: Finished difference Result 1213 states and 1308 transitions. [2022-12-14 15:21:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 15:21:22,473 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 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 475 [2022-12-14 15:21:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:21:22,475 INFO L225 Difference]: With dead ends: 1213 [2022-12-14 15:21:22,475 INFO L226 Difference]: Without dead ends: 1212 [2022-12-14 15:21:22,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1519 GetRequests, 1230 SyntacticMatches, 94 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28112 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=18349, Invalid=20263, Unknown=0, NotChecked=0, Total=38612 [2022-12-14 15:21:22,477 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 842 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:21:22,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 779 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 15:21:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-12-14 15:21:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 960. [2022-12-14 15:21:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 957 states have (on average 1.134796238244514) internal successors, (1086), 959 states have internal predecessors, (1086), 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 15:21:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1086 transitions. [2022-12-14 15:21:22,493 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1086 transitions. Word has length 475 [2022-12-14 15:21:22,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:21:22,494 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1086 transitions. [2022-12-14 15:21:22,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 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 15:21:22,494 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1086 transitions. [2022-12-14 15:21:22,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-12-14 15:21:22,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:21:22,497 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 126, 1, 1, 1] [2022-12-14 15:21:22,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-14 15:21:22,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:21:22,698 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:21:22,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:21:22,698 INFO L85 PathProgramCache]: Analyzing trace with hash 732767605, now seen corresponding path program 6 times [2022-12-14 15:21:22,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:21:22,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710504733] [2022-12-14 15:21:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:21:22,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:21:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:21:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 40005 backedges. 0 proven. 40005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:46,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:21:46,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710504733] [2022-12-14 15:21:46,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710504733] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:21:46,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067548234] [2022-12-14 15:21:46,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:21:46,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:21:46,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:21:46,586 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:21:46,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 15:21:46,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:21:46,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:21:46,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 255 conjunts are in the unsatisfiable core [2022-12-14 15:21:46,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:21:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 40005 backedges. 0 proven. 40005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:47,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:22:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 40005 backedges. 0 proven. 40005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:22:17,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067548234] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:22:17,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1193968756] [2022-12-14 15:22:17,755 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:22:17,755 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:22:17,756 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:22:17,756 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:22:17,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:22:17,829 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:22:33,839 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31674#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 15:22:33,839 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:22:33,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:22:33,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255, 255] total 509 [2022-12-14 15:22:33,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605113710] [2022-12-14 15:22:33,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:22:33,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 510 states [2022-12-14 15:22:33,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:22:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 510 interpolants. [2022-12-14 15:22:33,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65293, Invalid=199417, Unknown=0, NotChecked=0, Total=264710 [2022-12-14 15:22:33,859 INFO L87 Difference]: Start difference. First operand 960 states and 1086 transitions. Second operand has 510 states, 509 states have (on average 2.5009823182711197) internal successors, (1273), 510 states have internal predecessors, (1273), 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 15:23:23,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:23:23,718 INFO L93 Difference]: Finished difference Result 1728 states and 1855 transitions. [2022-12-14 15:23:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 510 states. [2022-12-14 15:23:23,719 INFO L78 Accepts]: Start accepts. Automaton has has 510 states, 509 states have (on average 2.5009823182711197) internal successors, (1273), 510 states have internal predecessors, (1273), 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 637 [2022-12-14 15:23:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:23:23,727 INFO L225 Difference]: With dead ends: 1728 [2022-12-14 15:23:23,727 INFO L226 Difference]: Without dead ends: 1727 [2022-12-14 15:23:23,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2418 GetRequests, 1524 SyntacticMatches, 127 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228204 ImplicationChecksByTransitivity, 79.3s TimeCoverageRelationStatistics Valid=162702, Invalid=427890, Unknown=0, NotChecked=0, Total=590592 [2022-12-14 15:23:23,755 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4700 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 15:23:23,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 604 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 15:23:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2022-12-14 15:23:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1282. [2022-12-14 15:23:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1279 states have (on average 1.1516810007818608) internal successors, (1473), 1281 states have internal predecessors, (1473), 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 15:23:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1473 transitions. [2022-12-14 15:23:23,777 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1473 transitions. Word has length 637 [2022-12-14 15:23:23,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:23:23,777 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1473 transitions. [2022-12-14 15:23:23,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 510 states, 509 states have (on average 2.5009823182711197) internal successors, (1273), 510 states have internal predecessors, (1273), 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 15:23:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1473 transitions. [2022-12-14 15:23:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-12-14 15:23:23,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:23:23,781 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 127, 1, 1, 1, 1, 1] [2022-12-14 15:23:23,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 15:23:23,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 15:23:23,982 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:23:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:23:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1438972009, now seen corresponding path program 7 times [2022-12-14 15:23:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:23:23,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68405437] [2022-12-14 15:23:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:23:23,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:23:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:23:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:23:50,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:23:50,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68405437] [2022-12-14 15:23:50,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68405437] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:23:50,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537729413] [2022-12-14 15:23:50,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 15:23:50,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:23:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:23:50,056 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:23:50,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 15:23:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:23:50,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 256 conjunts are in the unsatisfiable core [2022-12-14 15:23:50,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:23:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:23:50,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:24:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:24:23,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537729413] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:24:23,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1186254216] [2022-12-14 15:24:23,385 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 15:24:23,385 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:24:23,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:24:23,385 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:24:23,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:24:23,464 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:24:37,468 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40053#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-12-14 15:24:37,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:24:37,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:24:37,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256, 256] total 511 [2022-12-14 15:24:37,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878925806] [2022-12-14 15:24:37,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:24:37,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2022-12-14 15:24:37,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:24:37,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2022-12-14 15:24:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65806, Invalid=200966, Unknown=0, NotChecked=0, Total=266772 [2022-12-14 15:24:37,487 INFO L87 Difference]: Start difference. First operand 1282 states and 1473 transitions. Second operand has 512 states, 511 states have (on average 2.50293542074364) internal successors, (1279), 512 states have internal predecessors, (1279), 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 15:25:28,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:25:28,145 INFO L93 Difference]: Finished difference Result 1610 states and 1737 transitions. [2022-12-14 15:25:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2022-12-14 15:25:28,146 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 511 states have (on average 2.50293542074364) internal successors, (1279), 512 states have internal predecessors, (1279), 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 640 [2022-12-14 15:25:28,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:25:28,148 INFO L225 Difference]: With dead ends: 1610 [2022-12-14 15:25:28,148 INFO L226 Difference]: Without dead ends: 1353 [2022-12-14 15:25:28,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2428 GetRequests, 1531 SyntacticMatches, 128 SemanticMatches, 769 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230122 ImplicationChecksByTransitivity, 81.0s TimeCoverageRelationStatistics Valid=163597, Invalid=430073, Unknown=0, NotChecked=0, Total=593670 [2022-12-14 15:25:28,175 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3736 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3736 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:25:28,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3736 Valid, 634 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 15:25:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-12-14 15:25:28,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1283. [2022-12-14 15:25:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1280 states have (on average 1.05234375) internal successors, (1347), 1282 states have internal predecessors, (1347), 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 15:25:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1347 transitions. [2022-12-14 15:25:28,196 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1347 transitions. Word has length 640 [2022-12-14 15:25:28,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:25:28,197 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1347 transitions. [2022-12-14 15:25:28,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 511 states have (on average 2.50293542074364) internal successors, (1279), 512 states have internal predecessors, (1279), 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 15:25:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1347 transitions. [2022-12-14 15:25:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2022-12-14 15:25:28,203 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:25:28,203 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 1, 1, 1] [2022-12-14 15:25:28,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 15:25:28,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 15:25:28,404 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:25:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:25:28,404 INFO L85 PathProgramCache]: Analyzing trace with hash 173432755, now seen corresponding path program 7 times [2022-12-14 15:25:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:25:28,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271862729] [2022-12-14 15:25:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:25:28,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:25:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:25:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:25:52,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:25:52,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271862729] [2022-12-14 15:25:52,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271862729] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:25:52,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816555643] [2022-12-14 15:25:52,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 15:25:52,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:25:52,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:25:52,963 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:25:52,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 15:25:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:25:53,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 2122 conjuncts, 193 conjunts are in the unsatisfiable core [2022-12-14 15:25:53,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:25:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:25:53,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:26:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:26:22,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816555643] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:26:22,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2006198807] [2022-12-14 15:26:22,056 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:26:22,056 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:26:22,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:26:22,056 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:26:22,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:26:22,108 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:26:38,728 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '50079#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 15:26:38,728 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:26:38,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:26:38,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-12-14 15:26:38,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457075457] [2022-12-14 15:26:38,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:26:38,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 15:26:38,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:26:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 15:26:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73549, Invalid=77383, Unknown=0, NotChecked=0, Total=150932 [2022-12-14 15:26:38,744 INFO L87 Difference]: Start difference. First operand 1283 states and 1347 transitions. Second operand has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 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 15:26:47,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:26:47,797 INFO L93 Difference]: Finished difference Result 2429 states and 2620 transitions. [2022-12-14 15:26:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 15:26:47,798 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 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 955 [2022-12-14 15:26:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:26:47,804 INFO L225 Difference]: With dead ends: 2429 [2022-12-14 15:26:47,804 INFO L226 Difference]: Without dead ends: 2428 [2022-12-14 15:26:47,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3055 GetRequests, 2478 SyntacticMatches, 190 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111536 ImplicationChecksByTransitivity, 53.0s TimeCoverageRelationStatistics Valid=73549, Invalid=77383, Unknown=0, NotChecked=0, Total=150932 [2022-12-14 15:26:47,814 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2010 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:26:47,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2010 Valid, 1544 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 15:26:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-12-14 15:26:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1920. [2022-12-14 15:26:47,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1917 states have (on average 1.1340636411058946) internal successors, (2174), 1919 states have internal predecessors, (2174), 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 15:26:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2174 transitions. [2022-12-14 15:26:47,866 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2174 transitions. Word has length 955 [2022-12-14 15:26:47,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:26:47,867 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2174 transitions. [2022-12-14 15:26:47,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 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 15:26:47,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2174 transitions. [2022-12-14 15:26:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2022-12-14 15:26:47,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:26:47,882 INFO L195 NwaCegarLoop]: trace histogram [255, 255, 255, 255, 254, 1, 1, 1] [2022-12-14 15:26:47,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 15:26:48,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 15:26:48,083 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 15:26:48,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:26:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1681037963, now seen corresponding path program 7 times [2022-12-14 15:26:48,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:26:48,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118209717] [2022-12-14 15:26:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:26:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:26:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:29:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 161925 backedges. 0 proven. 161925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:29:12,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:29:12,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118209717] [2022-12-14 15:29:12,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118209717] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:29:12,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345921769] [2022-12-14 15:29:12,143 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 15:29:12,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:29:12,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:29:12,144 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:29:12,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954a65a4-0b3e-47a4-9e0b-3aa462249071/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 15:29:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:29:12,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 511 conjunts are in the unsatisfiable core [2022-12-14 15:29:12,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:29:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 161925 backedges. 0 proven. 161925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:29:13,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:31:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 161925 backedges. 0 proven. 161925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:31:22,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345921769] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:31:22,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2116124087] [2022-12-14 15:31:22,573 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 15:31:22,573 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:31:22,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:31:22,573 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:31:22,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:31:22,634 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:32:12,410 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '63877#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 15:32:12,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:32:12,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:32:12,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [511, 511, 511] total 1021 [2022-12-14 15:32:12,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332888550] [2022-12-14 15:32:12,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:32:12,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 1022 states [2022-12-14 15:32:12,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:32:12,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 1022 interpolants. [2022-12-14 15:32:12,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261645, Invalid=792057, Unknown=0, NotChecked=0, Total=1053702 [2022-12-14 15:32:12,489 INFO L87 Difference]: Start difference. First operand 1920 states and 2174 transitions. Second operand has 1022 states, 1021 states have (on average 2.5004897159647403) internal successors, (2553), 1022 states have internal predecessors, (2553), 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)