./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 804e8d646f3136915195a4e5e9f5153cc3c1cd2abf96df3f09c683a14a27e4de --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:43:40,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:43:40,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:43:40,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:43:40,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:43:40,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:43:40,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:43:40,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:43:40,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:43:40,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:43:40,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:43:40,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:43:40,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:43:40,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:43:40,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:43:40,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:43:40,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:43:40,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:43:40,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:43:40,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:43:40,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:43:40,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:43:40,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:43:40,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:43:40,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:43:40,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:43:40,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:43:40,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:43:40,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:43:40,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:43:40,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:43:40,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:43:40,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:43:40,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:43:40,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:43:40,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:43:40,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:43:40,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:43:40,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:43:40,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:43:40,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:43:40,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 01:43:40,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:43:40,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:43:40,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:43:40,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:43:40,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:43:40,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:43:40,362 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:43:40,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:43:40,362 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:43:40,363 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:43:40,363 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:43:40,363 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:43:40,363 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:43:40,363 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:43:40,364 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:43:40,364 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:43:40,364 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:43:40,364 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:43:40,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:43:40,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:43:40,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:43:40,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:43:40,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:43:40,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:43:40,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:43:40,366 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:43:40,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:43:40,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:43:40,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:43:40,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:43:40,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:43:40,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:43:40,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:43:40,368 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:43:40,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:43:40,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:43:40,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:43:40,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:43:40,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:43:40,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:43:40,370 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_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 804e8d646f3136915195a4e5e9f5153cc3c1cd2abf96df3f09c683a14a27e4de [2022-11-22 01:43:40,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:43:40,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:43:40,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:43:40,711 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:43:40,711 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:43:40,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2022-11-22 01:43:43,797 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:43:44,079 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:43:44,080 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2022-11-22 01:43:44,086 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/data/bf1f5416d/8a76eaf213d34ec99164b000391f746e/FLAG19461f869 [2022-11-22 01:43:44,110 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/data/bf1f5416d/8a76eaf213d34ec99164b000391f746e [2022-11-22 01:43:44,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:43:44,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:43:44,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:43:44,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:43:44,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:43:44,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707e2851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44, skipping insertion in model container [2022-11-22 01:43:44,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:43:44,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:43:44,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:43:44,316 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:43:44,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:43:44,346 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:43:44,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44 WrapperNode [2022-11-22 01:43:44,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:43:44,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:43:44,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:43:44,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:43:44,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,372 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2022-11-22 01:43:44,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:43:44,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:43:44,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:43:44,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:43:44,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,403 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:43:44,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:43:44,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:43:44,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:43:44,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (1/1) ... [2022-11-22 01:43:44,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:43:44,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:44,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:43:44,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:43:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:43:44,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:43:44,569 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:43:44,571 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:43:44,690 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:43:44,715 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:43:44,715 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 01:43:44,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:44 BoogieIcfgContainer [2022-11-22 01:43:44,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:43:44,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:43:44,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:43:44,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:43:44,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:43:44" (1/3) ... [2022-11-22 01:43:44,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1a83e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:44, skipping insertion in model container [2022-11-22 01:43:44,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:44" (2/3) ... [2022-11-22 01:43:44,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1a83e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:44, skipping insertion in model container [2022-11-22 01:43:44,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:44" (3/3) ... [2022-11-22 01:43:44,739 INFO L112 eAbstractionObserver]: Analyzing ICFG DivMinus2.c [2022-11-22 01:43:44,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:43:44,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-22 01:43:44,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:43:44,837 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;@235fb106, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:43:44,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-22 01:43:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:43:44,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:44,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:43:44,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:44,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2663876, now seen corresponding path program 1 times [2022-11-22 01:43:44,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:44,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270873289] [2022-11-22 01:43:44,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:44,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:43:45,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:45,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270873289] [2022-11-22 01:43:45,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270873289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:45,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:45,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:43:45,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197939842] [2022-11-22 01:43:45,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:45,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:45,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:45,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:45,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:45,184 INFO L87 Difference]: Start difference. First operand has 25 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:45,229 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-11-22 01:43:45,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:43:45,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:43:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:45,241 INFO L225 Difference]: With dead ends: 48 [2022-11-22 01:43:45,241 INFO L226 Difference]: Without dead ends: 45 [2022-11-22 01:43:45,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:45,248 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 41 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 [2022-11-22 01:43:45,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 41 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:43:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-22 01:43:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2022-11-22 01:43:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2022-11-22 01:43:45,286 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 4 [2022-11-22 01:43:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:45,287 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2022-11-22 01:43:45,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2022-11-22 01:43:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:43:45,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:45,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:43:45,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:43:45,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:45,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash 82541347, now seen corresponding path program 1 times [2022-11-22 01:43:45,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:45,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797738669] [2022-11-22 01:43:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:45,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:43:45,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:45,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797738669] [2022-11-22 01:43:45,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797738669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:45,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:45,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:43:45,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065595853] [2022-11-22 01:43:45,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:45,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:45,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:45,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:45,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:45,339 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2022-11-22 01:43:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:45,376 INFO L93 Difference]: Finished difference Result 73 states and 102 transitions. [2022-11-22 01:43:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:43:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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 [2022-11-22 01:43:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:45,378 INFO L225 Difference]: With dead ends: 73 [2022-11-22 01:43:45,379 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 01:43:45,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:45,381 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:45,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:43:45,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 01:43:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-22 01:43:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2022-11-22 01:43:45,390 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 5 [2022-11-22 01:43:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:45,390 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2022-11-22 01:43:45,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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) [2022-11-22 01:43:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2022-11-22 01:43:45,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:43:45,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:45,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:43:45,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:43:45,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:45,408 INFO L85 PathProgramCache]: Analyzing trace with hash 82541027, now seen corresponding path program 1 times [2022-11-22 01:43:45,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:45,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796854843] [2022-11-22 01:43:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:45,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:43:45,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:45,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796854843] [2022-11-22 01:43:45,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796854843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:45,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:45,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:43:45,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344553158] [2022-11-22 01:43:45,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:45,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:43:45,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:45,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:43:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:43:45,495 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2022-11-22 01:43:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:45,601 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2022-11-22 01:43:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:43:45,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2022-11-22 01:43:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:45,603 INFO L225 Difference]: With dead ends: 54 [2022-11-22 01:43:45,604 INFO L226 Difference]: Without dead ends: 53 [2022-11-22 01:43:45,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:45,606 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 48 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:45,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 21 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:43:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-22 01:43:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-11-22 01:43:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 50 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2022-11-22 01:43:45,642 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 5 [2022-11-22 01:43:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:45,642 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2022-11-22 01:43:45,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2022-11-22 01:43:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2022-11-22 01:43:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:43:45,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:45,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:45,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:43:45,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2012517445, now seen corresponding path program 1 times [2022-11-22 01:43:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:45,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990998117] [2022-11-22 01:43:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:45,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:43:45,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:45,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990998117] [2022-11-22 01:43:45,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990998117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:45,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:45,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:43:45,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662536043] [2022-11-22 01:43:45,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:45,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:45,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:45,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:45,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:45,703 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:45,742 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2022-11-22 01:43:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:43:45,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:43:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:45,745 INFO L225 Difference]: With dead ends: 75 [2022-11-22 01:43:45,746 INFO L226 Difference]: Without dead ends: 74 [2022-11-22 01:43:45,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:45,748 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:45,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:43:45,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-22 01:43:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2022-11-22 01:43:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 62 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2022-11-22 01:43:45,761 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 7 [2022-11-22 01:43:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:45,761 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2022-11-22 01:43:45,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2022-11-22 01:43:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:43:45,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:45,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:45,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:43:45,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:45,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2036468584, now seen corresponding path program 1 times [2022-11-22 01:43:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:45,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577158083] [2022-11-22 01:43:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:43:45,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:45,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577158083] [2022-11-22 01:43:45,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577158083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:45,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:45,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:43:45,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020220082] [2022-11-22 01:43:45,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:45,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:45,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:45,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:45,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:45,836 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:45,891 INFO L93 Difference]: Finished difference Result 76 states and 102 transitions. [2022-11-22 01:43:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:43:45,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:43:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:45,893 INFO L225 Difference]: With dead ends: 76 [2022-11-22 01:43:45,893 INFO L226 Difference]: Without dead ends: 75 [2022-11-22 01:43:45,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:45,895 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:45,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:43:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-22 01:43:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-22 01:43:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.5) internal successors, (99), 74 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2022-11-22 01:43:45,920 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 8 [2022-11-22 01:43:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:45,920 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2022-11-22 01:43:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2022-11-22 01:43:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:43:45,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:45,921 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:43:45,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2022479876, now seen corresponding path program 1 times [2022-11-22 01:43:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:45,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545866391] [2022-11-22 01:43:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:45,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:43:46,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:46,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545866391] [2022-11-22 01:43:46,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545866391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:46,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:46,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:43:46,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983681579] [2022-11-22 01:43:46,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:46,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:43:46,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:46,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:43:46,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:43:46,086 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:46,153 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2022-11-22 01:43:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:43:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:43:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:46,169 INFO L225 Difference]: With dead ends: 78 [2022-11-22 01:43:46,173 INFO L226 Difference]: Without dead ends: 33 [2022-11-22 01:43:46,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:43:46,175 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 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 [2022-11-22 01:43:46,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 16 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:43:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-22 01:43:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-22 01:43:46,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-11-22 01:43:46,188 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 11 [2022-11-22 01:43:46,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:46,188 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-11-22 01:43:46,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-11-22 01:43:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:43:46,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:46,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:46,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:43:46,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:46,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:46,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2022440988, now seen corresponding path program 1 times [2022-11-22 01:43:46,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:46,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199483870] [2022-11-22 01:43:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:46,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:43:46,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:46,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199483870] [2022-11-22 01:43:46,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199483870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:46,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:46,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:43:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539836760] [2022-11-22 01:43:46,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:46,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:46,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:46,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:46,251 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:46,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:46,263 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-22 01:43:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:43:46,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:43:46,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:46,264 INFO L225 Difference]: With dead ends: 33 [2022-11-22 01:43:46,264 INFO L226 Difference]: Without dead ends: 32 [2022-11-22 01:43:46,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:46,266 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:46,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:43:46,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-22 01:43:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-22 01:43:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-11-22 01:43:46,273 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 11 [2022-11-22 01:43:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:46,274 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-11-22 01:43:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-11-22 01:43:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 01:43:46,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:46,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-22 01:43:46,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:43:46,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:46,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1906234081, now seen corresponding path program 1 times [2022-11-22 01:43:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:46,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002759273] [2022-11-22 01:43:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:46,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:43:46,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:46,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002759273] [2022-11-22 01:43:46,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002759273] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:46,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767611738] [2022-11-22 01:43:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:46,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:46,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:46,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:46,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:43:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:46,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:43:46,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:43:46,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:43:46,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767611738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:43:46,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1961285410] [2022-11-22 01:43:46,729 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:43:46,729 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:43:46,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:43:46,739 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:43:46,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:43:47,073 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:43:47,617 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1019#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ 1 |ULTIMATE.start_main_~ytmp~0#1|)) (= |ULTIMATE.start_main_~res~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0) (<= |ULTIMATE.start_main_~ytmp~0#1| 2147483646))' at error location [2022-11-22 01:43:47,617 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:43:47,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:43:47,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 5] total 9 [2022-11-22 01:43:47,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554548768] [2022-11-22 01:43:47,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:43:47,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:43:47,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:47,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:43:47,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:43:47,619 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:47,699 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-11-22 01:43:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:43:47,700 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 01:43:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:47,701 INFO L225 Difference]: With dead ends: 32 [2022-11-22 01:43:47,701 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 01:43:47,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:43:47,702 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:47,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:43:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 01:43:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2022-11-22 01:43:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-22 01:43:47,707 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2022-11-22 01:43:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:47,707 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-22 01:43:47,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-22 01:43:47,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 01:43:47,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:47,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-22 01:43:47,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:47,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:47,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:47,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:47,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1085798335, now seen corresponding path program 1 times [2022-11-22 01:43:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:47,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590369629] [2022-11-22 01:43:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:43:48,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590369629] [2022-11-22 01:43:48,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590369629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123969925] [2022-11-22 01:43:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:48,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:48,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:48,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:48,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:43:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:48,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:43:48,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:43:48,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:43:48,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123969925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:43:48,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [17271650] [2022-11-22 01:43:48,172 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:43:48,172 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:43:48,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:43:48,173 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:43:48,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:43:48,714 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:43:49,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1216#(and (not (<= |ULTIMATE.start_main_~res~0#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-22 01:43:49,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:43:49,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:43:49,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-22 01:43:49,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317089380] [2022-11-22 01:43:49,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:43:49,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:43:49,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:49,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:43:49,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:43:49,178 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:49,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:49,219 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-11-22 01:43:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:43:49,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2022-11-22 01:43:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:49,221 INFO L225 Difference]: With dead ends: 52 [2022-11-22 01:43:49,222 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 01:43:49,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:43:49,225 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:49,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:43:49,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 01:43:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-22 01:43:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2022-11-22 01:43:49,258 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 20 [2022-11-22 01:43:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:49,259 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2022-11-22 01:43:49,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2022-11-22 01:43:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 01:43:49,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:49,261 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1] [2022-11-22 01:43:49,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:49,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:49,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash 448261019, now seen corresponding path program 2 times [2022-11-22 01:43:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:49,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110671996] [2022-11-22 01:43:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:43:49,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:49,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110671996] [2022-11-22 01:43:49,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110671996] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:49,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706295853] [2022-11-22 01:43:49,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:43:49,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:49,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:49,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:49,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:43:49,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-22 01:43:49,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:43:49,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:43:49,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:43:49,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:43:49,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706295853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:43:49,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1862905635] [2022-11-22 01:43:49,910 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:43:49,910 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:43:49,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:43:49,911 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:43:49,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:43:50,368 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:43:50,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1663#(and (not (<= |ULTIMATE.start_main_~res~0#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-22 01:43:50,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:43:50,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:43:50,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-22 01:43:50,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020251260] [2022-11-22 01:43:50,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:43:50,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:43:50,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:50,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:43:50,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:43:50,824 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:50,897 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2022-11-22 01:43:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:43:50,897 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 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 50 [2022-11-22 01:43:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:50,898 INFO L225 Difference]: With dead ends: 112 [2022-11-22 01:43:50,898 INFO L226 Difference]: Without dead ends: 111 [2022-11-22 01:43:50,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:43:50,900 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:50,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 78 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:43:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-22 01:43:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-22 01:43:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1090909090909091) internal successors, (122), 110 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2022-11-22 01:43:50,928 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 50 [2022-11-22 01:43:50,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:50,929 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2022-11-22 01:43:50,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:50,929 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2022-11-22 01:43:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-22 01:43:50,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:50,937 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1] [2022-11-22 01:43:50,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 01:43:51,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:43:51,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1199040429, now seen corresponding path program 3 times [2022-11-22 01:43:51,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:51,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926333074] [2022-11-22 01:43:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:51,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:43:51,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:51,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926333074] [2022-11-22 01:43:51,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926333074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:51,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398896697] [2022-11-22 01:43:51,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:43:51,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:51,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:51,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:51,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:43:51,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:43:51,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:43:51,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:43:51,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:43:51,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:43:52,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398896697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:43:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1655837960] [2022-11-22 01:43:52,199 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:43:52,199 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:43:52,200 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:43:52,200 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:43:52,200 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:43:52,523 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:43:53,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2639#(and (not (<= |ULTIMATE.start_main_~res~0#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-22 01:43:53,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:43:53,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:43:53,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-22 01:43:53,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117973370] [2022-11-22 01:43:53,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:43:53,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:43:53,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:53,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:43:53,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=739, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 01:43:53,014 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 24 states, 23 states have (on average 9.565217391304348) internal successors, (220), 23 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:53,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:53,153 INFO L93 Difference]: Finished difference Result 232 states and 266 transitions. [2022-11-22 01:43:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:43:53,154 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 9.565217391304348) internal successors, (220), 23 states have internal predecessors, (220), 0 states have call successors, (0), 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 110 [2022-11-22 01:43:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:53,156 INFO L225 Difference]: With dead ends: 232 [2022-11-22 01:43:53,156 INFO L226 Difference]: Without dead ends: 231 [2022-11-22 01:43:53,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=317, Invalid=739, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 01:43:53,157 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:53,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 162 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:43:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-22 01:43:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-22 01:43:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.1043478260869566) internal successors, (254), 230 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2022-11-22 01:43:53,174 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 110 [2022-11-22 01:43:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:53,175 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2022-11-22 01:43:53,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 9.565217391304348) internal successors, (220), 23 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:53,176 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2022-11-22 01:43:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-22 01:43:53,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:53,179 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 1, 1] [2022-11-22 01:43:53,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:53,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 01:43:53,388 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:53,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1455064515, now seen corresponding path program 4 times [2022-11-22 01:43:53,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:53,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463021570] [2022-11-22 01:43:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:53,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3037 backedges. 0 proven. 3014 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 01:43:54,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:54,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463021570] [2022-11-22 01:43:54,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463021570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:54,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389879340] [2022-11-22 01:43:54,540 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:43:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:54,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:54,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:54,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:43:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:54,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:43:54,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3037 backedges. 0 proven. 3014 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 01:43:55,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3037 backedges. 0 proven. 3014 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 01:43:56,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389879340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:43:56,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1887623405] [2022-11-22 01:43:56,214 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:43:56,214 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:43:56,214 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:43:56,214 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:43:56,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:43:56,497 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:43:57,974 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4671#(and (not (<= |ULTIMATE.start_main_~res~0#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-22 01:43:57,974 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:43:57,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:43:57,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-22 01:43:57,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529217403] [2022-11-22 01:43:57,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:43:57,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 01:43:57,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 01:43:57,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 01:43:57,978 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand has 48 states, 47 states have (on average 9.787234042553191) internal successors, (460), 47 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:58,273 INFO L93 Difference]: Finished difference Result 472 states and 542 transitions. [2022-11-22 01:43:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 01:43:58,274 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 9.787234042553191) internal successors, (460), 47 states have internal predecessors, (460), 0 states have call successors, (0), 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 230 [2022-11-22 01:43:58,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:58,278 INFO L225 Difference]: With dead ends: 472 [2022-11-22 01:43:58,278 INFO L226 Difference]: Without dead ends: 471 [2022-11-22 01:43:58,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 634 SyntacticMatches, 23 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2201 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 01:43:58,280 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 69 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:58,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 330 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:43:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-22 01:43:58,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2022-11-22 01:43:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.102127659574468) internal successors, (518), 470 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 518 transitions. [2022-11-22 01:43:58,339 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 518 transitions. Word has length 230 [2022-11-22 01:43:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:58,340 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 518 transitions. [2022-11-22 01:43:58,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 9.787234042553191) internal successors, (460), 47 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 518 transitions. [2022-11-22 01:43:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-11-22 01:43:58,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:58,353 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 46, 46, 1, 1] [2022-11-22 01:43:58,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:58,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 01:43:58,564 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:43:58,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash -277892957, now seen corresponding path program 5 times [2022-11-22 01:43:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:58,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010155163] [2022-11-22 01:43:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:58,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12973 backedges. 0 proven. 12926 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-22 01:44:02,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:02,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010155163] [2022-11-22 01:44:02,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010155163] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:02,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253132529] [2022-11-22 01:44:02,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:44:02,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:02,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:02,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:02,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:44:02,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2022-11-22 01:44:02,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:44:02,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 01:44:02,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12973 backedges. 0 proven. 12926 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-22 01:44:03,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12973 backedges. 0 proven. 12926 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-22 01:44:06,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253132529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:06,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [700912439] [2022-11-22 01:44:06,760 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:44:06,760 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:06,760 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:06,760 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:06,761 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:07,021 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:10,829 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8814#(and (not (<= |ULTIMATE.start_main_~res~0#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-22 01:44:10,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:44:10,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:10,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-22 01:44:10,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449354167] [2022-11-22 01:44:10,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:10,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-22 01:44:10,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-22 01:44:10,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2022-11-22 01:44:10,838 INFO L87 Difference]: Start difference. First operand 471 states and 518 transitions. Second operand has 96 states, 95 states have (on average 9.894736842105264) internal successors, (940), 95 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:11,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:11,564 INFO L93 Difference]: Finished difference Result 952 states and 1094 transitions. [2022-11-22 01:44:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-22 01:44:11,569 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 9.894736842105264) internal successors, (940), 95 states have internal predecessors, (940), 0 states have call successors, (0), 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 470 [2022-11-22 01:44:11,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:11,572 INFO L225 Difference]: With dead ends: 952 [2022-11-22 01:44:11,573 INFO L226 Difference]: Without dead ends: 951 [2022-11-22 01:44:11,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1455 GetRequests, 1306 SyntacticMatches, 47 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7889 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2022-11-22 01:44:11,576 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 141 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:11,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 666 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:44:11,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-11-22 01:44:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2022-11-22 01:44:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 1.1010526315789473) internal successors, (1046), 950 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1046 transitions. [2022-11-22 01:44:11,621 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1046 transitions. Word has length 470 [2022-11-22 01:44:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:11,622 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1046 transitions. [2022-11-22 01:44:11,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 9.894736842105264) internal successors, (940), 95 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1046 transitions. [2022-11-22 01:44:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2022-11-22 01:44:11,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:11,656 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 95, 95, 95, 95, 94, 94, 1, 1] [2022-11-22 01:44:11,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:11,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:11,863 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:44:11,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1705294237, now seen corresponding path program 6 times [2022-11-22 01:44:11,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:11,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758468752] [2022-11-22 01:44:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:11,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 53581 backedges. 0 proven. 53486 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-22 01:44:23,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:23,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758468752] [2022-11-22 01:44:23,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758468752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:23,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925308040] [2022-11-22 01:44:23,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:44:23,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:23,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:23,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:23,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:44:23,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:44:23,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:44:23,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-22 01:44:23,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 53581 backedges. 0 proven. 53486 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-22 01:44:24,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 53581 backedges. 0 proven. 53486 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-22 01:44:36,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925308040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:36,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [779695915] [2022-11-22 01:44:36,745 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:44:36,745 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:36,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:36,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:36,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:37,002 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:37,920 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17181#(and (not (<= |ULTIMATE.start_main_~res~0#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-22 01:44:37,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:44:37,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:37,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-22 01:44:37,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197793632] [2022-11-22 01:44:37,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:37,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-22 01:44:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:37,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-22 01:44:37,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18371, Invalid=21429, Unknown=0, NotChecked=0, Total=39800 [2022-11-22 01:44:37,942 INFO L87 Difference]: Start difference. First operand 951 states and 1046 transitions. Second operand has 192 states, 191 states have (on average 9.947643979057592) internal successors, (1900), 191 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:40,313 INFO L93 Difference]: Finished difference Result 1912 states and 2198 transitions. [2022-11-22 01:44:40,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-22 01:44:40,315 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 9.947643979057592) internal successors, (1900), 191 states have internal predecessors, (1900), 0 states have call successors, (0), 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 950 [2022-11-22 01:44:40,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:40,322 INFO L225 Difference]: With dead ends: 1912 [2022-11-22 01:44:40,323 INFO L226 Difference]: Without dead ends: 1911 [2022-11-22 01:44:40,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2943 GetRequests, 2745 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2274 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=18371, Invalid=21429, Unknown=0, NotChecked=0, Total=39800 [2022-11-22 01:44:40,328 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 285 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:40,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1338 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:44:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2022-11-22 01:44:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1911. [2022-11-22 01:44:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 1.100523560209424) internal successors, (2102), 1910 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2102 transitions. [2022-11-22 01:44:40,413 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2102 transitions. Word has length 950 [2022-11-22 01:44:40,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:40,414 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 2102 transitions. [2022-11-22 01:44:40,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 9.947643979057592) internal successors, (1900), 191 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:40,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2102 transitions. [2022-11-22 01:44:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1911 [2022-11-22 01:44:40,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:40,476 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 191, 191, 191, 191, 190, 190, 1, 1] [2022-11-22 01:44:40,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:40,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:40,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:44:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1741196829, now seen corresponding path program 7 times [2022-11-22 01:44:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:40,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800640077] [2022-11-22 01:44:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:40,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 217741 backedges. 0 proven. 217550 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-22 01:45:28,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:28,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800640077] [2022-11-22 01:45:28,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800640077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:28,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147105083] [2022-11-22 01:45:28,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:45:28,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:28,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:28,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:28,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:45:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:29,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 3825 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-22 01:45:29,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 217741 backedges. 0 proven. 217550 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-22 01:45:32,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:46:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 217741 backedges. 0 proven. 217550 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-22 01:46:18,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147105083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:46:18,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [939955716] [2022-11-22 01:46:18,457 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:46:18,457 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:46:18,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:46:18,457 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:46:18,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:46:18,679 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:46:20,455 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33996#(and (not (<= |ULTIMATE.start_main_~res~0#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-22 01:46:20,455 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:46:20,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:46:20,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-22 01:46:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970447762] [2022-11-22 01:46:20,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:46:20,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-22 01:46:20,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-22 01:46:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73577, Invalid=80479, Unknown=0, NotChecked=0, Total=154056 [2022-11-22 01:46:20,500 INFO L87 Difference]: Start difference. First operand 1911 states and 2102 transitions. Second operand has 384 states, 383 states have (on average 9.973890339425587) internal successors, (3820), 383 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:46:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:34,794 INFO L93 Difference]: Finished difference Result 3832 states and 4406 transitions. [2022-11-22 01:46:34,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-22 01:46:34,796 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 9.973890339425587) internal successors, (3820), 383 states have internal predecessors, (3820), 0 states have call successors, (0), 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 1910 [2022-11-22 01:46:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:34,809 INFO L225 Difference]: With dead ends: 3832 [2022-11-22 01:46:34,810 INFO L226 Difference]: Without dead ends: 3831 [2022-11-22 01:46:34,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5919 GetRequests, 5528 SyntacticMatches, 0 SemanticMatches, 391 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5157 ImplicationChecksByTransitivity, 59.7s TimeCoverageRelationStatistics Valid=73577, Invalid=80479, Unknown=0, NotChecked=0, Total=154056 [2022-11-22 01:46:34,820 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 573 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:34,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 2682 Invalid, 1352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 01:46:34,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2022-11-22 01:46:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 3831. [2022-11-22 01:46:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3831 states, 3830 states have (on average 1.1002610966057442) internal successors, (4214), 3830 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:46:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3831 states to 3831 states and 4214 transitions. [2022-11-22 01:46:35,100 INFO L78 Accepts]: Start accepts. Automaton has 3831 states and 4214 transitions. Word has length 1910 [2022-11-22 01:46:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:35,103 INFO L495 AbstractCegarLoop]: Abstraction has 3831 states and 4214 transitions. [2022-11-22 01:46:35,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 9.973890339425587) internal successors, (3820), 383 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:46:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3831 states and 4214 transitions. [2022-11-22 01:46:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3831 [2022-11-22 01:46:35,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:35,203 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 383, 383, 383, 383, 382, 382, 1, 1] [2022-11-22 01:46:35,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:46:35,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 01:46:35,425 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:46:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1141098723, now seen corresponding path program 8 times [2022-11-22 01:46:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:35,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956407746] [2022-11-22 01:46:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 877837 backedges. 0 proven. 877454 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-22 01:50:57,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:57,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956407746] [2022-11-22 01:50:57,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956407746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:50:57,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623693704] [2022-11-22 01:50:57,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:50:57,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:57,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:57,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:57,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 01:51:06,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 479 check-sat command(s) [2022-11-22 01:51:06,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:51:07,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 7665 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-22 01:51:07,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 877837 backedges. 0 proven. 877454 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-22 01:51:13,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:54:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 877837 backedges. 0 proven. 877454 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-22 01:54:16,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623693704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:54:16,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1123581182] [2022-11-22 01:54:16,541 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:54:16,541 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:54:16,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:54:16,542 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:54:16,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:54:16,779 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:54:19,972 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '67708#(and (not (<= |ULTIMATE.start_main_~res~0#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2022-11-22 01:54:19,972 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:54:19,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:54:19,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-11-22 01:54:19,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523299873] [2022-11-22 01:54:19,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:54:19,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-22 01:54:19,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:54:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-22 01:54:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294569, Invalid=308383, Unknown=0, NotChecked=0, Total=602952 [2022-11-22 01:54:20,044 INFO L87 Difference]: Start difference. First operand 3831 states and 4214 transitions. Second operand has 768 states, 767 states have (on average 9.98696219035202) internal successors, (7660), 767 states have internal predecessors, (7660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:17,906 INFO L93 Difference]: Finished difference Result 7672 states and 8822 transitions. [2022-11-22 01:56:17,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-11-22 01:56:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 9.98696219035202) internal successors, (7660), 767 states have internal predecessors, (7660), 0 states have call successors, (0), 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 3830 [2022-11-22 01:56:17,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:17,939 INFO L225 Difference]: With dead ends: 7672 [2022-11-22 01:56:17,939 INFO L226 Difference]: Without dead ends: 7671 [2022-11-22 01:56:17,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11871 GetRequests, 11096 SyntacticMatches, 0 SemanticMatches, 775 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10341 ImplicationChecksByTransitivity, 238.3s TimeCoverageRelationStatistics Valid=294569, Invalid=308383, Unknown=0, NotChecked=0, Total=602952 [2022-11-22 01:56:17,978 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1149 mSDsluCounter, 5362 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 5370 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:17,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 5370 Invalid, 2698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [388 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 01:56:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7671 states. [2022-11-22 01:56:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7671 to 7671. [2022-11-22 01:56:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7671 states, 7670 states have (on average 1.1001303780964797) internal successors, (8438), 7670 states have internal predecessors, (8438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7671 states to 7671 states and 8438 transitions. [2022-11-22 01:56:18,331 INFO L78 Accepts]: Start accepts. Automaton has 7671 states and 8438 transitions. Word has length 3830 [2022-11-22 01:56:18,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:18,334 INFO L495 AbstractCegarLoop]: Abstraction has 7671 states and 8438 transitions. [2022-11-22 01:56:18,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 9.98696219035202) internal successors, (7660), 767 states have internal predecessors, (7660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7671 states and 8438 transitions. [2022-11-22 01:56:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7671 [2022-11-22 01:56:18,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:18,687 INFO L195 NwaCegarLoop]: trace histogram [767, 767, 767, 767, 767, 767, 767, 767, 766, 766, 1, 1] [2022-11-22 01:56:18,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-22 01:56:18,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b66850-5b54-4a51-b483-452ec40a1f14/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 01:56:18,888 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 01:56:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash -605260061, now seen corresponding path program 9 times [2022-11-22 01:56:18,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:18,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471290227] [2022-11-22 01:56:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:18,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat