./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7 --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 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:27:35,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:27:35,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:27:35,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:27:35,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:27:35,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:27:35,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:27:35,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:27:35,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:27:35,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:27:35,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:27:35,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:27:35,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:27:35,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:27:35,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:27:35,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:27:35,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:27:35,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:27:35,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:27:35,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:27:35,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:27:35,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:27:35,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:27:35,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:27:35,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:27:35,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:27:35,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:27:35,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:27:35,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:27:35,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:27:35,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:27:35,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:27:35,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:27:35,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:27:35,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:27:35,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:27:35,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:27:35,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:27:35,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:27:35,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:27:35,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:27:35,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-25 18:27:35,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:27:35,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:27:35,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:27:35,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:27:35,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:27:35,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:27:35,516 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:27:35,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:27:35,517 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:27:35,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:27:35,518 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:27:35,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:27:35,518 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:27:35,519 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:27:35,519 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:27:35,519 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:27:35,519 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:27:35,519 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:27:35,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:27:35,520 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:27:35,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:27:35,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:27:35,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:27:35,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:27:35,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:27:35,521 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:27:35,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:27:35,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:27:35,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:27:35,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:27:35,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:27:35,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:27:35,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:27:35,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:27:35,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:27:35,525 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:27:35,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:27:35,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:27:35,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:27:35,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:27:35,526 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2021-11-25 18:27:35,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:27:35,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:27:35,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:27:35,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:27:35,786 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:27:35,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-11-25 18:27:35,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/data/d62136140/b85a027dfa0a434b8130322c761f392e/FLAG3df690ea1 [2021-11-25 18:27:36,281 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:27:36,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-11-25 18:27:36,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/data/d62136140/b85a027dfa0a434b8130322c761f392e/FLAG3df690ea1 [2021-11-25 18:27:36,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/data/d62136140/b85a027dfa0a434b8130322c761f392e [2021-11-25 18:27:36,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:27:36,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:27:36,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:27:36,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:27:36,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:27:36,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21aabcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36, skipping insertion in model container [2021-11-25 18:27:36,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:27:36,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:27:36,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:27:36,874 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:27:36,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:27:36,906 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:27:36,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36 WrapperNode [2021-11-25 18:27:36,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:27:36,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:27:36,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:27:36,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:27:36,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,941 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-11-25 18:27:36,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:27:36,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:27:36,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:27:36,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:27:36,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:27:36,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:27:36,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:27:36,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:27:36,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (1/1) ... [2021-11-25 18:27:36,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:27:36,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:37,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:27:37,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:27:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:27:37,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:27:37,125 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:27:37,126 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:27:37,247 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:27:37,272 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:27:37,272 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:27:37,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:37 BoogieIcfgContainer [2021-11-25 18:27:37,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:27:37,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:27:37,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:27:37,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:27:37,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:27:36" (1/3) ... [2021-11-25 18:27:37,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f0490f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:37, skipping insertion in model container [2021-11-25 18:27:37,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:36" (2/3) ... [2021-11-25 18:27:37,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f0490f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:37, skipping insertion in model container [2021-11-25 18:27:37,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:37" (3/3) ... [2021-11-25 18:27:37,289 INFO L111 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2021-11-25 18:27:37,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:27:37,302 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-25 18:27:37,350 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:27:37,358 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:27:37,358 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 18:27:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:27:37,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:37,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:27:37,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2066791, now seen corresponding path program 1 times [2021-11-25 18:27:37,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:37,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324935458] [2021-11-25 18:27:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:37,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:37,513 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:37,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324935458] [2021-11-25 18:27:37,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324935458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:27:37,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:27:37,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:27:37,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082723944] [2021-11-25 18:27:37,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:27:37,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:27:37,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:37,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:27:37,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:27:37,554 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-11-25 18:27:37,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:37,593 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-11-25 18:27:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:27:37,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2021-11-25 18:27:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:37,604 INFO L225 Difference]: With dead ends: 40 [2021-11-25 18:27:37,604 INFO L226 Difference]: Without dead ends: 23 [2021-11-25 18:27:37,607 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:27:37,611 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:37,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:27:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-25 18:27:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-11-25 18:27:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 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) [2021-11-25 18:27:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-25 18:27:37,645 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2021-11-25 18:27:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:37,650 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-25 18:27:37,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-11-25 18:27:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-25 18:27:37,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:27:37,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:37,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:27:37,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:27:37,652 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2066599, now seen corresponding path program 1 times [2021-11-25 18:27:37,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:37,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694235919] [2021-11-25 18:27:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:37,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:37,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:37,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694235919] [2021-11-25 18:27:37,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694235919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:27:37,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:27:37,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:27:37,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503332985] [2021-11-25 18:27:37,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:27:37,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:27:37,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:27:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:27:37,710 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:37,732 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-11-25 18:27:37,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:27:37,733 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 [2021-11-25 18:27:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:37,733 INFO L225 Difference]: With dead ends: 21 [2021-11-25 18:27:37,733 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 18:27:37,734 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:27:37,736 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:37,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:27:37,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 18:27:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 18:27:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-25 18:27:37,742 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2021-11-25 18:27:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:37,743 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-25 18:27:37,743 INFO L471 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) [2021-11-25 18:27:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-25 18:27:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:27:37,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:37,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:27:37,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:27:37,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:37,745 INFO L85 PathProgramCache]: Analyzing trace with hash 64064617, now seen corresponding path program 1 times [2021-11-25 18:27:37,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:37,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096108207] [2021-11-25 18:27:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:37,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:37,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:37,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096108207] [2021-11-25 18:27:37,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096108207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:27:37,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:27:37,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:27:37,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917390846] [2021-11-25 18:27:37,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:27:37,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:27:37,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:37,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:27:37,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:27:37,794 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:37,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:37,829 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-11-25 18:27:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:27:37,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 18:27:37,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:37,830 INFO L225 Difference]: With dead ends: 25 [2021-11-25 18:27:37,830 INFO L226 Difference]: Without dead ends: 23 [2021-11-25 18:27:37,831 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:27:37,833 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:37,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:27:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-25 18:27:37,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-11-25 18:27:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-25 18:27:37,854 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-11-25 18:27:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:37,855 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-25 18:27:37,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-25 18:27:37,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:27:37,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:37,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:27:37,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:27:37,856 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:37,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1436556619, now seen corresponding path program 1 times [2021-11-25 18:27:37,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:37,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465393991] [2021-11-25 18:27:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:37,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:37,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:37,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465393991] [2021-11-25 18:27:37,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465393991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:27:37,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:27:37,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:27:37,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931184006] [2021-11-25 18:27:37,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:27:37,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:27:37,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:27:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:27:37,915 INFO L87 Difference]: Start difference. First operand 18 states and 19 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) [2021-11-25 18:27:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:37,937 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-11-25 18:27:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:27:37,938 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 [2021-11-25 18:27:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:37,938 INFO L225 Difference]: With dead ends: 18 [2021-11-25 18:27:37,939 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:27:37,939 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:27:37,941 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:37,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:27:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:27:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 18:27:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-25 18:27:37,953 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-11-25 18:27:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:37,954 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-25 18:27:37,954 INFO L471 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) [2021-11-25 18:27:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-25 18:27:37,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:27:37,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:37,955 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:27:37,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:27:37,955 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:37,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1404140288, now seen corresponding path program 1 times [2021-11-25 18:27:37,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:37,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264957625] [2021-11-25 18:27:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:37,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:38,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:38,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264957625] [2021-11-25 18:27:38,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264957625] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:38,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353231546] [2021-11-25 18:27:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:38,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:38,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:38,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:38,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:27:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:38,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:27:38,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:38,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:38,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353231546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:38,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67402614] [2021-11-25 18:27:38,272 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:27:38,273 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:38,280 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:38,286 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:38,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:38,557 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:38,768 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '290#(and (< 50 |ULTIMATE.start_main_~x~0#1|) (< 2147483648 |ULTIMATE.start_main_~y~0#1|))' at error location [2021-11-25 18:27:38,769 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:38,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:38,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2021-11-25 18:27:38,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68456825] [2021-11-25 18:27:38,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:38,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:27:38,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:38,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:27:38,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:27:38,779 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:38,917 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-11-25 18:27:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:27:38,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 18:27:38,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:38,922 INFO L225 Difference]: With dead ends: 43 [2021-11-25 18:27:38,922 INFO L226 Difference]: Without dead ends: 32 [2021-11-25 18:27:38,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:27:38,924 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:38,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 10 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:27:38,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-25 18:27:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2021-11-25 18:27:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-25 18:27:38,930 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2021-11-25 18:27:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:38,930 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-25 18:27:38,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-25 18:27:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 18:27:38,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:38,932 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2021-11-25 18:27:38,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:39,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:39,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:39,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:39,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1373902105, now seen corresponding path program 1 times [2021-11-25 18:27:39,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:39,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341195328] [2021-11-25 18:27:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:39,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:39,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:39,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341195328] [2021-11-25 18:27:39,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341195328] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:39,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043863983] [2021-11-25 18:27:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:39,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:39,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:39,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:39,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:27:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:39,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:27:39,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:39,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:39,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043863983] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:39,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196169113] [2021-11-25 18:27:39,393 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:27:39,393 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:39,393 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:39,393 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:39,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:39,522 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:39,680 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '476#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2021-11-25 18:27:39,680 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:39,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:39,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-25 18:27:39,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361920782] [2021-11-25 18:27:39,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:39,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:27:39,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:39,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:27:39,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:27:39,683 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:39,738 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2021-11-25 18:27:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:27:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-25 18:27:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:39,740 INFO L225 Difference]: With dead ends: 76 [2021-11-25 18:27:39,740 INFO L226 Difference]: Without dead ends: 75 [2021-11-25 18:27:39,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:27:39,742 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:39,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 42 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:27:39,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-25 18:27:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2021-11-25 18:27:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-11-25 18:27:39,752 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 16 [2021-11-25 18:27:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:39,752 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-11-25 18:27:39,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-11-25 18:27:39,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 18:27:39,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:39,758 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-25 18:27:39,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:39,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:39,977 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:39,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1765149276, now seen corresponding path program 1 times [2021-11-25 18:27:39,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:39,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069584185] [2021-11-25 18:27:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:39,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:27:40,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:40,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069584185] [2021-11-25 18:27:40,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069584185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:40,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180762768] [2021-11-25 18:27:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:40,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:40,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:40,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:40,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:27:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:40,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:27:40,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:40,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:40,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180762768] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:40,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1787051496] [2021-11-25 18:27:40,173 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:27:40,173 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:40,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:40,174 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:40,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:40,310 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:40,503 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '753#(and (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2021-11-25 18:27:40,504 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:40,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:40,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2021-11-25 18:27:40,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421740402] [2021-11-25 18:27:40,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:40,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:27:40,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:40,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:27:40,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:27:40,506 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:40,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:40,562 INFO L93 Difference]: Finished difference Result 155 states and 196 transitions. [2021-11-25 18:27:40,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 18:27:40,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-25 18:27:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:40,566 INFO L225 Difference]: With dead ends: 155 [2021-11-25 18:27:40,566 INFO L226 Difference]: Without dead ends: 102 [2021-11-25 18:27:40,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:27:40,570 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:40,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 40 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:27:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-25 18:27:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-11-25 18:27:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.15) internal successors, (115), 101 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:40,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2021-11-25 18:27:40,595 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 18 [2021-11-25 18:27:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:40,595 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2021-11-25 18:27:40,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2021-11-25 18:27:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 18:27:40,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:40,597 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1] [2021-11-25 18:27:40,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:40,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:40,798 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:40,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1997382403, now seen corresponding path program 2 times [2021-11-25 18:27:40,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:40,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357160992] [2021-11-25 18:27:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:40,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:40,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:40,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357160992] [2021-11-25 18:27:40,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357160992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:40,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690997229] [2021-11-25 18:27:40,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:27:40,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:40,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:40,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:40,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:27:40,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-25 18:27:40,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:27:40,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:27:40,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:41,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:41,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690997229] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:41,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1031902925] [2021-11-25 18:27:41,223 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:27:41,223 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:41,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:41,224 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:41,224 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:41,290 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:41,441 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1308#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2021-11-25 18:27:41,441 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:41,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:41,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-11-25 18:27:41,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349277423] [2021-11-25 18:27:41,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:41,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 18:27:41,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 18:27:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:27:41,443 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:41,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:41,562 INFO L93 Difference]: Finished difference Result 551 states and 644 transitions. [2021-11-25 18:27:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:27:41,562 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-25 18:27:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:41,567 INFO L225 Difference]: With dead ends: 551 [2021-11-25 18:27:41,567 INFO L226 Difference]: Without dead ends: 550 [2021-11-25 18:27:41,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:27:41,568 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:41,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 78 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:27:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-25 18:27:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 363. [2021-11-25 18:27:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 361 states have (on average 1.1662049861495845) internal successors, (421), 362 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 421 transitions. [2021-11-25 18:27:41,632 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 421 transitions. Word has length 40 [2021-11-25 18:27:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:41,633 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 421 transitions. [2021-11-25 18:27:41,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 421 transitions. [2021-11-25 18:27:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 18:27:41,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:41,642 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 5, 4, 4, 4, 1, 1] [2021-11-25 18:27:41,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:41,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 18:27:41,865 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:41,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 956298010, now seen corresponding path program 2 times [2021-11-25 18:27:41,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:41,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925021286] [2021-11-25 18:27:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:41,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:41,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:41,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925021286] [2021-11-25 18:27:41,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925021286] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:41,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706990525] [2021-11-25 18:27:41,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:27:41,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:41,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:41,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:42,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:27:42,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 18:27:42,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:27:42,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:27:42,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:42,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:42,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706990525] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:42,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [250166674] [2021-11-25 18:27:42,262 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:27:42,262 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:42,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:42,263 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:42,263 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:42,409 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:42,584 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2699#(and (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2021-11-25 18:27:42,585 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:42,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:42,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-25 18:27:42,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419943602] [2021-11-25 18:27:42,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:42,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:27:42,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:42,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:27:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:27:42,587 INFO L87 Difference]: Start difference. First operand 363 states and 421 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:42,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:42,658 INFO L93 Difference]: Finished difference Result 585 states and 680 transitions. [2021-11-25 18:27:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:27:42,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-25 18:27:42,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:42,660 INFO L225 Difference]: With dead ends: 585 [2021-11-25 18:27:42,660 INFO L226 Difference]: Without dead ends: 243 [2021-11-25 18:27:42,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:27:42,669 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:42,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 56 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:27:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-25 18:27:42,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-25 18:27:42,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 1.1369294605809128) internal successors, (274), 242 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions. [2021-11-25 18:27:42,693 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 54 [2021-11-25 18:27:42,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:42,695 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 274 transitions. [2021-11-25 18:27:42,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions. [2021-11-25 18:27:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 18:27:42,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:42,699 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1] [2021-11-25 18:27:42,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:42,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:42,925 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:42,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2041686213, now seen corresponding path program 3 times [2021-11-25 18:27:42,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:42,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410747507] [2021-11-25 18:27:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:42,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:43,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:43,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410747507] [2021-11-25 18:27:43,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410747507] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:43,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739712089] [2021-11-25 18:27:43,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:27:43,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:43,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:43,190 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:43,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:27:43,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:27:43,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:27:43,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 18:27:43,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:43,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:43,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739712089] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:43,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [127325497] [2021-11-25 18:27:43,950 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:27:43,950 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:43,950 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:43,950 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:43,950 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:44,024 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:44,192 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4222#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2021-11-25 18:27:44,192 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:44,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:44,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2021-11-25 18:27:44,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211577482] [2021-11-25 18:27:44,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:44,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-25 18:27:44,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:44,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-25 18:27:44,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:27:44,195 INFO L87 Difference]: Start difference. First operand 243 states and 274 transitions. Second operand has 32 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:44,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:44,525 INFO L93 Difference]: Finished difference Result 2182 states and 2553 transitions. [2021-11-25 18:27:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-25 18:27:44,525 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 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 88 [2021-11-25 18:27:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:44,537 INFO L225 Difference]: With dead ends: 2182 [2021-11-25 18:27:44,538 INFO L226 Difference]: Without dead ends: 2181 [2021-11-25 18:27:44,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:27:44,539 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 311 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:44,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 190 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:27:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-11-25 18:27:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 927. [2021-11-25 18:27:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 925 states have (on average 1.1686486486486487) internal successors, (1081), 926 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1081 transitions. [2021-11-25 18:27:44,597 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1081 transitions. Word has length 88 [2021-11-25 18:27:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:44,597 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1081 transitions. [2021-11-25 18:27:44,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1081 transitions. [2021-11-25 18:27:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 18:27:44,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:44,599 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 10, 10, 10, 5, 5, 5, 1, 1] [2021-11-25 18:27:44,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:44,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:27:44,825 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:44,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash 246531568, now seen corresponding path program 3 times [2021-11-25 18:27:44,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:44,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759496952] [2021-11-25 18:27:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:44,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:44,978 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:44,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759496952] [2021-11-25 18:27:44,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759496952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:44,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46459519] [2021-11-25 18:27:44,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:27:44,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:44,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:44,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:44,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:27:45,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:27:45,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:27:45,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:27:45,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:45,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:45,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46459519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:45,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1352776352] [2021-11-25 18:27:45,562 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:27:45,562 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:45,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:45,563 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:45,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:45,698 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:45,922 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8375#(and (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2021-11-25 18:27:45,922 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:45,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:45,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-25 18:27:45,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569318540] [2021-11-25 18:27:45,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:45,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 18:27:45,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:45,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 18:27:45,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 18:27:45,925 INFO L87 Difference]: Start difference. First operand 927 states and 1081 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:46,040 INFO L93 Difference]: Finished difference Result 1449 states and 1694 transitions. [2021-11-25 18:27:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 18:27:46,041 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 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 90 [2021-11-25 18:27:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:46,045 INFO L225 Difference]: With dead ends: 1449 [2021-11-25 18:27:46,045 INFO L226 Difference]: Without dead ends: 579 [2021-11-25 18:27:46,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 18:27:46,048 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 89 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:46,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 86 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:27:46,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-11-25 18:27:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2021-11-25 18:27:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 577 states have (on average 1.1403812824956672) internal successors, (658), 578 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 658 transitions. [2021-11-25 18:27:46,072 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 658 transitions. Word has length 90 [2021-11-25 18:27:46,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:46,074 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 658 transitions. [2021-11-25 18:27:46,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:46,074 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 658 transitions. [2021-11-25 18:27:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-25 18:27:46,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:46,081 INFO L514 BasicCegarLoop]: trace histogram [27, 26, 26, 22, 22, 22, 5, 5, 5, 1, 1] [2021-11-25 18:27:46,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-25 18:27:46,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 18:27:46,295 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1842369180, now seen corresponding path program 4 times [2021-11-25 18:27:46,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:46,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843560218] [2021-11-25 18:27:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:46,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 382 proven. 1430 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:46,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:46,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843560218] [2021-11-25 18:27:46,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843560218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:46,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912934035] [2021-11-25 18:27:46,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:27:46,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:46,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:46,658 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:46,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:27:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:46,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:27:46,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 382 proven. 1430 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:47,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 382 proven. 1430 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:48,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912934035] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:48,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [993381434] [2021-11-25 18:27:48,018 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:27:48,018 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:48,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:48,018 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:48,018 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:48,142 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:48,349 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11742#(and (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2021-11-25 18:27:48,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:48,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:48,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-25 18:27:48,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915150711] [2021-11-25 18:27:48,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:48,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 18:27:48,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 18:27:48,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1170, Invalid=2022, Unknown=0, NotChecked=0, Total=3192 [2021-11-25 18:27:48,354 INFO L87 Difference]: Start difference. First operand 579 states and 658 transitions. Second operand has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:48,587 INFO L93 Difference]: Finished difference Result 773 states and 881 transitions. [2021-11-25 18:27:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-25 18:27:48,588 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 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 162 [2021-11-25 18:27:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:48,590 INFO L225 Difference]: With dead ends: 773 [2021-11-25 18:27:48,590 INFO L226 Difference]: Without dead ends: 323 [2021-11-25 18:27:48,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1170, Invalid=2022, Unknown=0, NotChecked=0, Total=3192 [2021-11-25 18:27:48,593 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 248 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:48,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 170 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:27:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-25 18:27:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 308. [2021-11-25 18:27:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 306 states have (on average 1.0718954248366013) internal successors, (328), 307 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 328 transitions. [2021-11-25 18:27:48,605 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 328 transitions. Word has length 162 [2021-11-25 18:27:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:48,605 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 328 transitions. [2021-11-25 18:27:48,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 328 transitions. [2021-11-25 18:27:48,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-25 18:27:48,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:48,608 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1] [2021-11-25 18:27:48,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:48,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 18:27:48,821 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash -198496171, now seen corresponding path program 4 times [2021-11-25 18:27:48,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:48,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182012564] [2021-11-25 18:27:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:48,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:49,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:49,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182012564] [2021-11-25 18:27:49,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182012564] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:49,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810799799] [2021-11-25 18:27:49,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:27:49,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:49,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:49,393 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:49,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:27:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:49,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 18:27:49,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:49,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:51,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810799799] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:51,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1953587636] [2021-11-25 18:27:51,424 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:27:51,425 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:51,426 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:51,426 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:51,426 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:51,488 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:51,719 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14165#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2021-11-25 18:27:51,719 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:51,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:51,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2021-11-25 18:27:51,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639337199] [2021-11-25 18:27:51,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:51,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-25 18:27:51,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:51,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-25 18:27:51,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2036, Invalid=2794, Unknown=0, NotChecked=0, Total=4830 [2021-11-25 18:27:51,725 INFO L87 Difference]: Start difference. First operand 308 states and 328 transitions. Second operand has 64 states, 63 states have (on average 5.841269841269841) internal successors, (368), 63 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:52,212 INFO L93 Difference]: Finished difference Result 1286 states and 1480 transitions. [2021-11-25 18:27:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-25 18:27:52,213 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.841269841269841) internal successors, (368), 63 states have internal predecessors, (368), 0 states have call successors, (0), 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 184 [2021-11-25 18:27:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:52,220 INFO L225 Difference]: With dead ends: 1286 [2021-11-25 18:27:52,220 INFO L226 Difference]: Without dead ends: 1285 [2021-11-25 18:27:52,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2036, Invalid=2794, Unknown=0, NotChecked=0, Total=4830 [2021-11-25 18:27:52,223 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 304 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:52,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 373 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:27:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2021-11-25 18:27:52,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1251. [2021-11-25 18:27:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1249 states have (on average 1.1417133706965572) internal successors, (1426), 1250 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1426 transitions. [2021-11-25 18:27:52,266 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1426 transitions. Word has length 184 [2021-11-25 18:27:52,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:52,267 INFO L470 AbstractCegarLoop]: Abstraction has 1251 states and 1426 transitions. [2021-11-25 18:27:52,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.841269841269841) internal successors, (368), 63 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:52,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1426 transitions. [2021-11-25 18:27:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-25 18:27:52,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:52,272 INFO L514 BasicCegarLoop]: trace histogram [51, 50, 50, 46, 46, 46, 5, 5, 5, 1, 1] [2021-11-25 18:27:52,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:52,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 18:27:52,485 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1827866612, now seen corresponding path program 5 times [2021-11-25 18:27:52,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:52,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81359993] [2021-11-25 18:27:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:52,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 790 proven. 6302 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 18:27:53,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:53,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81359993] [2021-11-25 18:27:53,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81359993] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:53,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660268198] [2021-11-25 18:27:53,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:27:53,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:53,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:53,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:53,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:27:53,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 18:27:53,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:27:53,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:27:53,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 1045 proven. 65 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2021-11-25 18:27:54,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 1045 proven. 65 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2021-11-25 18:27:54,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660268198] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:54,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [451376078] [2021-11-25 18:27:54,955 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:27:54,956 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:54,956 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:54,956 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:54,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:55,095 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:55,416 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18989#(and (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2021-11-25 18:27:55,416 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:55,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:55,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 7, 7] total 61 [2021-11-25 18:27:55,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858681594] [2021-11-25 18:27:55,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:55,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-25 18:27:55,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:55,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-25 18:27:55,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1894, Invalid=2936, Unknown=0, NotChecked=0, Total=4830 [2021-11-25 18:27:55,421 INFO L87 Difference]: Start difference. First operand 1251 states and 1426 transitions. Second operand has 61 states, 61 states have (on average 5.918032786885246) internal successors, (361), 61 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:55,869 INFO L93 Difference]: Finished difference Result 3228 states and 3909 transitions. [2021-11-25 18:27:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-25 18:27:55,870 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.918032786885246) internal successors, (361), 61 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2021-11-25 18:27:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:55,884 INFO L225 Difference]: With dead ends: 3228 [2021-11-25 18:27:55,885 INFO L226 Difference]: Without dead ends: 2250 [2021-11-25 18:27:55,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 896 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1894, Invalid=2936, Unknown=0, NotChecked=0, Total=4830 [2021-11-25 18:27:55,889 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 811 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:55,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 196 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:27:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-11-25 18:27:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2250. [2021-11-25 18:27:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2248 states have (on average 1.150355871886121) internal successors, (2586), 2249 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2586 transitions. [2021-11-25 18:27:56,001 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2586 transitions. Word has length 306 [2021-11-25 18:27:56,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:56,002 INFO L470 AbstractCegarLoop]: Abstraction has 2250 states and 2586 transitions. [2021-11-25 18:27:56,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.918032786885246) internal successors, (361), 61 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2586 transitions. [2021-11-25 18:27:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-11-25 18:27:56,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:56,010 INFO L514 BasicCegarLoop]: trace histogram [60, 59, 59, 48, 48, 48, 12, 12, 12, 1, 1] [2021-11-25 18:27:56,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:56,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 18:27:56,234 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash -512038933, now seen corresponding path program 6 times [2021-11-25 18:27:56,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:56,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193067803] [2021-11-25 18:27:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:56,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 2182 proven. 6864 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-11-25 18:27:57,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:57,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193067803] [2021-11-25 18:27:57,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193067803] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:57,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262124731] [2021-11-25 18:27:57,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:27:57,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:57,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:57,287 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:57,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 18:27:57,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:27:57,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:27:57,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 18:27:57,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 2182 proven. 6864 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-11-25 18:27:58,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:27:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 2182 proven. 6864 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-11-25 18:27:58,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262124731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:27:58,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2108455576] [2021-11-25 18:27:58,770 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:27:58,771 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:27:58,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:27:58,771 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:27:58,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:27:58,897 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:27:59,230 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27562#(and (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2021-11-25 18:27:59,231 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:27:59,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:27:59,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2021-11-25 18:27:59,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145037430] [2021-11-25 18:27:59,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:27:59,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-25 18:27:59,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:59,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-25 18:27:59,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1420, Invalid=2362, Unknown=0, NotChecked=0, Total=3782 [2021-11-25 18:27:59,235 INFO L87 Difference]: Start difference. First operand 2250 states and 2586 transitions. Second operand has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:59,475 INFO L93 Difference]: Finished difference Result 4233 states and 4908 transitions. [2021-11-25 18:27:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-25 18:27:59,476 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 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 360 [2021-11-25 18:27:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:59,489 INFO L225 Difference]: With dead ends: 4233 [2021-11-25 18:27:59,489 INFO L226 Difference]: Without dead ends: 2268 [2021-11-25 18:27:59,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 1068 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1420, Invalid=2362, Unknown=0, NotChecked=0, Total=3782 [2021-11-25 18:27:59,496 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 205 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:59,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 176 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:27:59,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2021-11-25 18:27:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2268. [2021-11-25 18:27:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 2266 states have (on average 1.1491615180935568) internal successors, (2604), 2267 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 2604 transitions. [2021-11-25 18:27:59,597 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 2604 transitions. Word has length 360 [2021-11-25 18:27:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:59,597 INFO L470 AbstractCegarLoop]: Abstraction has 2268 states and 2604 transitions. [2021-11-25 18:27:59,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 2604 transitions. [2021-11-25 18:27:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-11-25 18:27:59,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:59,607 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 1, 1] [2021-11-25 18:27:59,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:59,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 18:27:59,829 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:27:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1619656565, now seen corresponding path program 5 times [2021-11-25 18:27:59,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:59,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539899923] [2021-11-25 18:27:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:59,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:28:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:28:01,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:28:01,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539899923] [2021-11-25 18:28:01,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539899923] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:28:01,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001368656] [2021-11-25 18:28:01,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:28:01,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:28:01,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:28:01,477 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:28:01,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 18:28:01,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-11-25 18:28:01,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:28:01,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-25 18:28:01,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:28:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:28:02,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:28:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:28:06,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001368656] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:28:06,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954327590] [2021-11-25 18:28:06,819 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:28:06,820 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:28:06,820 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:28:06,820 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:28:06,820 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:28:06,881 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:28:07,201 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37503#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2021-11-25 18:28:07,201 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:28:07,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:28:07,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2021-11-25 18:28:07,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953904832] [2021-11-25 18:28:07,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:28:07,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-25 18:28:07,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:28:07,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-25 18:28:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8148, Invalid=9674, Unknown=0, NotChecked=0, Total=17822 [2021-11-25 18:28:07,209 INFO L87 Difference]: Start difference. First operand 2268 states and 2604 transitions. Second operand has 128 states, 127 states have (on average 5.921259842519685) internal successors, (752), 127 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:28:10,526 INFO L93 Difference]: Finished difference Result 69548 states and 81432 transitions. [2021-11-25 18:28:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-25 18:28:10,527 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.921259842519685) internal successors, (752), 127 states have internal predecessors, (752), 0 states have call successors, (0), 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 376 [2021-11-25 18:28:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:28:10,746 INFO L225 Difference]: With dead ends: 69548 [2021-11-25 18:28:10,746 INFO L226 Difference]: Without dead ends: 69547 [2021-11-25 18:28:10,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8148, Invalid=9674, Unknown=0, NotChecked=0, Total=17822 [2021-11-25 18:28:10,847 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 1282 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:28:10,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1282 Valid, 978 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:28:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69547 states. [2021-11-25 18:28:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69547 to 8961. [2021-11-25 18:28:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8961 states, 8959 states have (on average 1.1668713026007367) internal successors, (10454), 8960 states have internal predecessors, (10454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 10454 transitions. [2021-11-25 18:28:12,851 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 10454 transitions. Word has length 376 [2021-11-25 18:28:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:28:12,852 INFO L470 AbstractCegarLoop]: Abstraction has 8961 states and 10454 transitions. [2021-11-25 18:28:12,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.921259842519685) internal successors, (752), 127 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 10454 transitions. [2021-11-25 18:28:12,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-25 18:28:12,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:28:12,857 INFO L514 BasicCegarLoop]: trace histogram [63, 62, 62, 51, 51, 51, 12, 12, 12, 1, 1] [2021-11-25 18:28:12,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 18:28:13,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 18:28:13,077 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:28:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:28:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash 469329654, now seen corresponding path program 7 times [2021-11-25 18:28:13,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:28:13,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549405033] [2021-11-25 18:28:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:28:13,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:28:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:28:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10432 backedges. 0 proven. 10432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:28:14,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:28:14,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549405033] [2021-11-25 18:28:14,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549405033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:28:14,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722761537] [2021-11-25 18:28:14,752 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:28:14,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:28:14,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:28:14,758 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:28:14,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 18:28:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:28:14,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-25 18:28:14,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:28:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10432 backedges. 0 proven. 10432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:28:15,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:28:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10432 backedges. 0 proven. 10432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:28:19,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722761537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:28:19,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [174894775] [2021-11-25 18:28:19,966 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:28:19,966 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:28:19,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:28:19,966 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:28:19,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:28:20,075 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:28:20,455 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '131052#(and (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2021-11-25 18:28:20,455 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:28:20,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:28:20,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2021-11-25 18:28:20,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611063817] [2021-11-25 18:28:20,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:28:20,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-25 18:28:20,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:28:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-25 18:28:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8320, Invalid=10312, Unknown=0, NotChecked=0, Total=18632 [2021-11-25 18:28:20,463 INFO L87 Difference]: Start difference. First operand 8961 states and 10454 transitions. Second operand has 128 states, 127 states have (on average 5.952755905511811) internal successors, (756), 127 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:28:22,992 INFO L93 Difference]: Finished difference Result 25114 states and 31990 transitions. [2021-11-25 18:28:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-25 18:28:22,993 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.952755905511811) internal successors, (756), 127 states have internal predecessors, (756), 0 states have call successors, (0), 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 378 [2021-11-25 18:28:22,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:28:23,034 INFO L225 Difference]: With dead ends: 25114 [2021-11-25 18:28:23,035 INFO L226 Difference]: Without dead ends: 25113 [2021-11-25 18:28:23,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1733 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8320, Invalid=10312, Unknown=0, NotChecked=0, Total=18632 [2021-11-25 18:28:23,043 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1214 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:28:23,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 400 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:28:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25113 states. [2021-11-25 18:28:24,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25113 to 25113. [2021-11-25 18:28:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25113 states, 25111 states have (on average 1.1647485165863565) internal successors, (29248), 25112 states have internal predecessors, (29248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25113 states to 25113 states and 29248 transitions. [2021-11-25 18:28:24,525 INFO L78 Accepts]: Start accepts. Automaton has 25113 states and 29248 transitions. Word has length 378 [2021-11-25 18:28:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:28:24,526 INFO L470 AbstractCegarLoop]: Abstraction has 25113 states and 29248 transitions. [2021-11-25 18:28:24,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.952755905511811) internal successors, (756), 127 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 25113 states and 29248 transitions. [2021-11-25 18:28:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2021-11-25 18:28:24,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:28:24,574 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 126, 126, 126, 126, 1, 1] [2021-11-25 18:28:24,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 18:28:24,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 18:28:24,789 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:28:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:28:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1292460619, now seen corresponding path program 6 times [2021-11-25 18:28:24,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:28:24,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243046287] [2021-11-25 18:28:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:28:24,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:28:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:28:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 0 proven. 47628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:28:30,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:28:30,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243046287] [2021-11-25 18:28:30,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243046287] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:28:30,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424560536] [2021-11-25 18:28:30,543 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:28:30,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:28:30,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:28:30,544 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:28:30,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 18:28:30,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:28:30,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:28:30,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-25 18:28:30,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:28:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 30903 proven. 0 refuted. 0 times theorem prover too weak. 16725 trivial. 0 not checked. [2021-11-25 18:28:34,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:28:34,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424560536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:28:34,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:28:34,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [127] total 180 [2021-11-25 18:28:34,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374665942] [2021-11-25 18:28:34,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:28:34,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-25 18:28:34,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:28:34,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-25 18:28:34,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2021-11-25 18:28:34,979 INFO L87 Difference]: Start difference. First operand 25113 states and 29248 transitions. Second operand has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:28:35,463 INFO L93 Difference]: Finished difference Result 25573 states and 29784 transitions. [2021-11-25 18:28:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-25 18:28:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 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 760 [2021-11-25 18:28:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:28:35,466 INFO L225 Difference]: With dead ends: 25573 [2021-11-25 18:28:35,466 INFO L226 Difference]: Without dead ends: 763 [2021-11-25 18:28:35,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6552 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2021-11-25 18:28:35,492 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 37 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:28:35,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 555 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:28:35,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-11-25 18:28:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 763. [2021-11-25 18:28:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.0013123359580052) internal successors, (763), 762 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 763 transitions. [2021-11-25 18:28:35,524 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 763 transitions. Word has length 760 [2021-11-25 18:28:35,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:28:35,525 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 763 transitions. [2021-11-25 18:28:35,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:35,526 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 763 transitions. [2021-11-25 18:28:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2021-11-25 18:28:35,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:28:35,535 INFO L514 BasicCegarLoop]: trace histogram [127, 126, 126, 76, 76, 76, 51, 51, 51, 1, 1] [2021-11-25 18:28:35,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-25 18:28:35,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 18:28:35,757 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:28:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:28:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash 443401142, now seen corresponding path program 8 times [2021-11-25 18:28:35,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:28:35,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782043719] [2021-11-25 18:28:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:28:35,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:28:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:28:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 40128 backedges. 0 proven. 40128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:28:41,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:28:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782043719] [2021-11-25 18:28:41,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782043719] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:28:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731634718] [2021-11-25 18:28:41,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:28:41,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:28:41,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:28:41,990 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:28:41,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 18:28:42,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2021-11-25 18:28:42,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:28:42,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-25 18:28:42,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:28:43,477 INFO L134 CoverageAnalysis]: Checked inductivity of 40128 backedges. 15502 proven. 17176 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-11-25 18:28:43,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:28:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 40128 backedges. 15502 proven. 17176 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-11-25 18:28:52,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731634718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:28:52,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2020464199] [2021-11-25 18:28:52,549 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:28:52,550 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:28:52,550 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:28:52,550 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:28:52,550 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:28:52,634 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:28:53,143 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '227609#(and (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2021-11-25 18:28:53,143 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:28:53,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:28:53,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 78, 78] total 205 [2021-11-25 18:28:53,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114486626] [2021-11-25 18:28:53,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:28:53,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2021-11-25 18:28:53,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:28:53,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2021-11-25 18:28:53,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21463, Invalid=24547, Unknown=0, NotChecked=0, Total=46010 [2021-11-25 18:28:53,204 INFO L87 Difference]: Start difference. First operand 763 states and 763 transitions. Second operand has 206 states, 205 states have (on average 6.0) internal successors, (1230), 206 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:58,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:28:58,683 INFO L93 Difference]: Finished difference Result 1232 states and 1309 transitions. [2021-11-25 18:28:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2021-11-25 18:28:58,685 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 205 states have (on average 6.0) internal successors, (1230), 206 states have internal predecessors, (1230), 0 states have call successors, (0), 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 762 [2021-11-25 18:28:58,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:28:58,689 INFO L225 Difference]: With dead ends: 1232 [2021-11-25 18:28:58,689 INFO L226 Difference]: Without dead ends: 1231 [2021-11-25 18:28:58,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2411 GetRequests, 2198 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2689 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=21463, Invalid=24547, Unknown=0, NotChecked=0, Total=46010 [2021-11-25 18:28:58,693 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1608 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:28:58,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 626 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:28:58,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-11-25 18:28:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2021-11-25 18:28:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 1.0008130081300812) internal successors, (1231), 1230 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1231 transitions. [2021-11-25 18:28:58,728 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1231 transitions. Word has length 762 [2021-11-25 18:28:58,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:28:58,729 INFO L470 AbstractCegarLoop]: Abstraction has 1231 states and 1231 transitions. [2021-11-25 18:28:58,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 205 states have (on average 6.0) internal successors, (1230), 206 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:28:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1231 transitions. [2021-11-25 18:28:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2021-11-25 18:28:58,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:28:58,744 INFO L514 BasicCegarLoop]: trace histogram [205, 204, 204, 154, 154, 154, 51, 51, 51, 1, 1] [2021-11-25 18:28:58,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 18:28:58,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:28:58,957 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:28:58,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:28:58,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1061636032, now seen corresponding path program 9 times [2021-11-25 18:28:58,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:28:58,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301015393] [2021-11-25 18:28:58,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:28:58,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:28:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:29:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 109548 backedges. 0 proven. 109548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:29:13,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:29:13,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301015393] [2021-11-25 18:29:13,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301015393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:29:13,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547695304] [2021-11-25 18:29:13,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:29:13,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:29:13,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:29:13,981 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:29:13,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 18:29:14,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:29:14,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:29:14,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 2053 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-25 18:29:14,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:29:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 109548 backedges. 65890 proven. 12752 refuted. 0 times theorem prover too weak. 30906 trivial. 0 not checked. [2021-11-25 18:29:20,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:29:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 109548 backedges. 65890 proven. 12752 refuted. 0 times theorem prover too weak. 30906 trivial. 0 not checked. [2021-11-25 18:29:22,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547695304] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:29:22,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1516610337] [2021-11-25 18:29:22,345 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:29:22,345 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:29:22,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:29:22,345 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:29:22,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:29:22,445 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:29:23,545 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '238125#(and (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2021-11-25 18:29:23,545 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:29:23,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:29:23,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 54, 54] total 259 [2021-11-25 18:29:23,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003993796] [2021-11-25 18:29:23,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:29:23,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 260 states [2021-11-25 18:29:23,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:29:23,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2021-11-25 18:29:23,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23155, Invalid=48937, Unknown=0, NotChecked=0, Total=72092 [2021-11-25 18:29:23,557 INFO L87 Difference]: Start difference. First operand 1231 states and 1231 transitions. Second operand has 260 states, 260 states have (on average 6.561538461538461) internal successors, (1706), 259 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:29:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:29:39,464 INFO L93 Difference]: Finished difference Result 1231 states and 1231 transitions. [2021-11-25 18:29:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2021-11-25 18:29:39,467 INFO L78 Accepts]: Start accepts. Automaton has has 260 states, 260 states have (on average 6.561538461538461) internal successors, (1706), 259 states have internal predecessors, (1706), 0 states have call successors, (0), 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 1230 [2021-11-25 18:29:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:29:39,471 INFO L225 Difference]: With dead ends: 1231 [2021-11-25 18:29:39,471 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 18:29:39,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4100 GetRequests, 3625 SyntacticMatches, 1 SemanticMatches, 474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36362 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=71518, Invalid=154582, Unknown=0, NotChecked=0, Total=226100 [2021-11-25 18:29:39,489 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1021 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:29:39,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 0 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 2752 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:29:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 18:29:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 18:29:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:29:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 18:29:39,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1230 [2021-11-25 18:29:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:29:39,498 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 18:29:39,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 260 states, 260 states have (on average 6.561538461538461) internal successors, (1706), 259 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:29:39,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 18:29:39,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 18:29:39,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2021-11-25 18:29:39,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2021-11-25 18:29:39,503 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2021-11-25 18:29:39,503 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2021-11-25 18:29:39,503 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2021-11-25 18:29:39,504 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2021-11-25 18:29:39,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 18:29:39,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:29:39,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 18:29:44,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-11-25 18:29:44,133 INFO L858 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-11-25 18:29:44,133 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-11-25 18:29:44,133 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-11-25 18:29:44,133 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-11-25 18:29:44,133 INFO L858 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-11-25 18:29:44,133 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse6 (<= |ULTIMATE.start_main_~y~0#1| 32)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 44)) (.cse5 (<= |ULTIMATE.start_main_~y~0#1| 9)) (.cse9 (<= |ULTIMATE.start_main_~y~0#1| 27)) (.cse14 (<= |ULTIMATE.start_main_~y~0#1| 42)) (.cse21 (<= |ULTIMATE.start_main_~y~0#1| 25)) (.cse7 (<= |ULTIMATE.start_main_~y~0#1| 4)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse25 (<= |ULTIMATE.start_main_~y~0#1| 36)) (.cse33 (<= |ULTIMATE.start_main_~y~0#1| 31)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 6)) (.cse26 (<= |ULTIMATE.start_main_~y~0#1| 49)) (.cse36 (<= |ULTIMATE.start_main_~y~0#1| 13)) (.cse24 (<= |ULTIMATE.start_main_~y~0#1| 45)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 19)) (.cse27 (<= |ULTIMATE.start_main_~y~0#1| 20)) (.cse16 (<= |ULTIMATE.start_main_~y~0#1| 30)) (.cse35 (<= |ULTIMATE.start_main_~y~0#1| 23)) (.cse32 (<= |ULTIMATE.start_main_~y~0#1| 14)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse42 (<= |ULTIMATE.start_main_~y~0#1| 17)) (.cse44 (<= |ULTIMATE.start_main_~y~0#1| 40)) (.cse17 (<= |ULTIMATE.start_main_~y~0#1| 10)) (.cse22 (<= |ULTIMATE.start_main_~y~0#1| 28)) (.cse46 (<= |ULTIMATE.start_main_~y~0#1| 47)) (.cse40 (<= |ULTIMATE.start_main_~y~0#1| 46)) (.cse10 (<= |ULTIMATE.start_main_~y~0#1| 3)) (.cse47 (<= |ULTIMATE.start_main_~y~0#1| 16)) (.cse12 (<= |ULTIMATE.start_main_~y~0#1| 22)) (.cse45 (<= |ULTIMATE.start_main_~y~0#1| 21)) (.cse34 (<= |ULTIMATE.start_main_~y~0#1| 24)) (.cse29 (<= |ULTIMATE.start_main_~y~0#1| 7)) (.cse11 (<= |ULTIMATE.start_main_~y~0#1| 43)) (.cse30 (<= |ULTIMATE.start_main_~y~0#1| 26)) (.cse15 (<= |ULTIMATE.start_main_~y~0#1| 0)) (.cse41 (<= |ULTIMATE.start_main_~y~0#1| 18)) (.cse31 (<= |ULTIMATE.start_main_~y~0#1| 48)) (.cse2 (<= |ULTIMATE.start_main_~y~0#1| 50)) (.cse18 (<= |ULTIMATE.start_main_~y~0#1| 8)) (.cse43 (<= |ULTIMATE.start_main_~y~0#1| 34)) (.cse49 (<= |ULTIMATE.start_main_~y~0#1| 5)) (.cse50 (<= |ULTIMATE.start_main_~y~0#1| 35)) (.cse28 (<= |ULTIMATE.start_main_~y~0#1| 11)) (.cse38 (<= |ULTIMATE.start_main_~y~0#1| 12)) (.cse39 (<= |ULTIMATE.start_main_~y~0#1| 39)) (.cse37 (<= |ULTIMATE.start_main_~y~0#1| 38)) (.cse48 (<= |ULTIMATE.start_main_~y~0#1| 33)) (.cse19 (<= |ULTIMATE.start_main_~y~0#1| 29)) (.cse20 (<= |ULTIMATE.start_main_~y~0#1| 41)) (.cse51 (<= |ULTIMATE.start_main_~y~0#1| 15)) (.cse0 (<= 51 |ULTIMATE.start_main_~x~0#1|)) (.cse23 (<= |ULTIMATE.start_main_~y~0#1| 37))) (or (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 83) .cse1) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 52) .cse2) (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3) (and .cse4 (<= |ULTIMATE.start_main_~x~0#1| 96) .cse0) (and .cse5 (<= 9 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9)) (and .cse6 (<= 32 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 32)) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 51) (<= |ULTIMATE.start_main_~y~0#1| 51)) (and .cse7 (<= |ULTIMATE.start_main_~x~0#1| 4) (<= 4 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 70) .cse6 .cse0) (and .cse8 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 58)) (and .cse9 (<= 27 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 27)) (and .cse0 .cse10 (<= |ULTIMATE.start_main_~x~0#1| 99)) (and .cse11 (<= 43 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 43)) (and (<= |ULTIMATE.start_main_~x~0#1| 22) (<= 22 |ULTIMATE.start_main_~x~0#1|) .cse12) (and .cse13 (<= |ULTIMATE.start_main_~x~0#1| 100) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 60) .cse14 .cse0) (and .cse8 (<= |ULTIMATE.start_main_~x~0#1| 44) (<= 44 |ULTIMATE.start_main_~x~0#1|)) (and .cse15 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 102)) (and (<= |ULTIMATE.start_main_~x~0#1| 72) .cse16 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 92) .cse17 .cse0) (and .cse5 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 93)) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 94) .cse18) (and (<= |ULTIMATE.start_main_~x~0#1| 29) (<= 29 |ULTIMATE.start_main_~x~0#1|) .cse19) (and (<= |ULTIMATE.start_main_~x~0#1| 41) .cse20 (<= 41 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 25) .cse21 (<= 25 |ULTIMATE.start_main_~x~0#1|)) (and .cse22 (<= |ULTIMATE.start_main_~x~0#1| 28) (<= 28 |ULTIMATE.start_main_~x~0#1|)) (and .cse23 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 65)) (and .cse24 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 57)) (and (<= |ULTIMATE.start_main_~x~0#1| 66) .cse0 .cse25) (and (<= |ULTIMATE.start_main_~x~0#1| 49) (<= 49 |ULTIMATE.start_main_~x~0#1|) .cse26) (and (<= 20 |ULTIMATE.start_main_~x~0#1|) .cse27 (<= |ULTIMATE.start_main_~x~0#1| 20)) (and (<= |ULTIMATE.start_main_~x~0#1| 75) .cse9 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 11) (<= 11 |ULTIMATE.start_main_~x~0#1|) .cse28) (and (<= 7 |ULTIMATE.start_main_~x~0#1|) .cse29 (<= |ULTIMATE.start_main_~x~0#1| 7)) (and .cse30 (<= |ULTIMATE.start_main_~x~0#1| 76) .cse0) (and (<= 42 |ULTIMATE.start_main_~x~0#1|) .cse14 (<= |ULTIMATE.start_main_~x~0#1| 42)) (and (<= |ULTIMATE.start_main_~x~0#1| 48) .cse31 (<= 48 |ULTIMATE.start_main_~x~0#1|)) (and .cse32 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 88)) (and (<= |ULTIMATE.start_main_~x~0#1| 31) (<= 31 |ULTIMATE.start_main_~x~0#1|) .cse33) (and (<= |ULTIMATE.start_main_~x~0#1| 77) .cse21 .cse0) (and .cse34 (<= |ULTIMATE.start_main_~x~0#1| 78) .cse0) (and (<= 23 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 23) .cse35) (and .cse7 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 98)) (and (<= |ULTIMATE.start_main_~x~0#1| 89) .cse0 .cse36) (and .cse3 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 101)) (and (<= |ULTIMATE.start_main_~x~0#1| 36) (<= 36 |ULTIMATE.start_main_~x~0#1|) .cse25) (and (<= |ULTIMATE.start_main_~x~0#1| 71) .cse0 .cse33) (and .cse37 (<= |ULTIMATE.start_main_~x~0#1| 38) (<= 38 |ULTIMATE.start_main_~x~0#1|)) (and .cse38 (<= |ULTIMATE.start_main_~x~0#1| 12) (<= 12 |ULTIMATE.start_main_~x~0#1|)) (and (<= 6 |ULTIMATE.start_main_~x~0#1|) .cse4 (<= |ULTIMATE.start_main_~x~0#1| 6)) (and (<= |ULTIMATE.start_main_~x~0#1| 53) .cse26 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 13) .cse36 (<= 13 |ULTIMATE.start_main_~x~0#1|)) (and (<= 39 |ULTIMATE.start_main_~x~0#1|) .cse39 (<= |ULTIMATE.start_main_~x~0#1| 39)) (and .cse24 (<= |ULTIMATE.start_main_~x~0#1| 45) (<= 45 |ULTIMATE.start_main_~x~0#1|)) (and (<= 19 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 19) .cse1) (and (<= 46 |ULTIMATE.start_main_~x~0#1|) .cse40 (<= |ULTIMATE.start_main_~x~0#1| 46)) (and (<= |ULTIMATE.start_main_~x~0#1| 84) .cse41 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 82) .cse27 .cse0) (and (<= 17 |ULTIMATE.start_main_~x~0#1|) .cse42 (<= |ULTIMATE.start_main_~x~0#1| 17)) (and (<= |ULTIMATE.start_main_~x~0#1| 30) .cse16 (<= 30 |ULTIMATE.start_main_~x~0#1|)) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 79) .cse35) (and (<= |ULTIMATE.start_main_~x~0#1| 14) .cse32 (<= 14 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 68) .cse0 .cse43) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) .cse13 (<= |ULTIMATE.start_main_~x~0#1| 2)) (and .cse44 (<= 40 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 40)) (and (<= 21 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 21) .cse45) (and (<= |ULTIMATE.start_main_~x~0#1| 85) .cse42 .cse0) (and .cse46 (<= |ULTIMATE.start_main_~x~0#1| 55) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 16) .cse47 (<= 16 |ULTIMATE.start_main_~x~0#1|)) (and .cse44 (<= |ULTIMATE.start_main_~x~0#1| 62) .cse0) (and .cse17 (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 10 |ULTIMATE.start_main_~x~0#1|)) (and .cse22 (<= |ULTIMATE.start_main_~x~0#1| 74) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 47) .cse46 (<= 47 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 56) .cse40 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 3) .cse10 (<= 3 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 86) .cse0 .cse47) (and .cse0 .cse12 (<= |ULTIMATE.start_main_~x~0#1| 80)) (and .cse45 (<= |ULTIMATE.start_main_~x~0#1| 81) .cse0) (and .cse34 (<= 24 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 24)) (and .cse48 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 69)) (and .cse29 (<= |ULTIMATE.start_main_~x~0#1| 95) .cse0) (and .cse11 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 59)) (and .cse30 (<= |ULTIMATE.start_main_~x~0#1| 26) (<= 26 |ULTIMATE.start_main_~x~0#1|)) (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse15 (<= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse41 (<= |ULTIMATE.start_main_~x~0#1| 18) (<= 18 |ULTIMATE.start_main_~x~0#1|)) (and .cse31 (<= |ULTIMATE.start_main_~x~0#1| 54) .cse0) (and (<= 50 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) .cse2) (and (<= 5 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 5) .cse49) (and (<= |ULTIMATE.start_main_~x~0#1| 35) .cse50 (<= 35 |ULTIMATE.start_main_~x~0#1|)) (and (<= 8 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 8) .cse18) (and (<= 34 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 34) .cse43) (and .cse49 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 97)) (and (<= |ULTIMATE.start_main_~x~0#1| 67) .cse50 .cse0) (and (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (<= |ULTIMATE.start_main_~x~0#1| 103) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 91) .cse28 .cse0) (and .cse51 (<= |ULTIMATE.start_main_~x~0#1| 15) (<= 15 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 90) .cse38 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 63) .cse39 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 64) .cse37 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 33) .cse48 (<= 33 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 73) .cse19 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 61) .cse0 .cse20) (and .cse51 (<= |ULTIMATE.start_main_~x~0#1| 87) .cse0) (and .cse23 (<= |ULTIMATE.start_main_~x~0#1| 37) (<= 37 |ULTIMATE.start_main_~x~0#1|)))) [2021-11-25 18:29:44,137 INFO L732 BasicCegarLoop]: Path program histogram: [9, 6, 1, 1, 1, 1, 1] [2021-11-25 18:29:44,139 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:29:44,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:29:44 BoogieIcfgContainer [2021-11-25 18:29:44,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:29:44,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:29:44,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:29:44,183 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:29:44,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:37" (3/4) ... [2021-11-25 18:29:44,187 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 18:29:44,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-25 18:29:44,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-25 18:29:44,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 18:29:44,235 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:29:44,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:29:44,235 INFO L158 Benchmark]: Toolchain (without parser) took 127558.42ms. Allocated memory was 127.9MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 94.5MB in the beginning and 535.1MB in the end (delta: -440.6MB). Peak memory consumption was 887.6MB. Max. memory is 16.1GB. [2021-11-25 18:29:44,236 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:29:44,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.03ms. Allocated memory is still 127.9MB. Free memory was 94.2MB in the beginning and 105.6MB in the end (delta: -11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:29:44,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.63ms. Allocated memory is still 127.9MB. Free memory was 105.6MB in the beginning and 104.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:29:44,237 INFO L158 Benchmark]: Boogie Preprocessor took 26.88ms. Allocated memory is still 127.9MB. Free memory was 104.2MB in the beginning and 103.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:29:44,237 INFO L158 Benchmark]: RCFGBuilder took 305.94ms. Allocated memory is still 127.9MB. Free memory was 103.1MB in the beginning and 94.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:29:44,238 INFO L158 Benchmark]: TraceAbstraction took 126903.80ms. Allocated memory was 127.9MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 94.2MB in the beginning and 538.2MB in the end (delta: -444.0MB). Peak memory consumption was 953.6MB. Max. memory is 16.1GB. [2021-11-25 18:29:44,238 INFO L158 Benchmark]: Witness Printer took 52.44ms. Allocated memory is still 1.5GB. Free memory was 538.2MB in the beginning and 535.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:29:44,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.03ms. Allocated memory is still 127.9MB. Free memory was 94.2MB in the beginning and 105.6MB in the end (delta: -11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.63ms. Allocated memory is still 127.9MB. Free memory was 105.6MB in the beginning and 104.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.88ms. Allocated memory is still 127.9MB. Free memory was 104.2MB in the beginning and 103.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.94ms. Allocated memory is still 127.9MB. Free memory was 103.1MB in the beginning and 94.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 126903.80ms. Allocated memory was 127.9MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 94.2MB in the beginning and 538.2MB in the end (delta: -444.0MB). Peak memory consumption was 953.6MB. Max. memory is 16.1GB. * Witness Printer took 52.44ms. Allocated memory is still 1.5GB. Free memory was 538.2MB in the beginning and 535.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 126.8s, OverallIterations: 20, TraceHistogramMax: 205, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 30.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7380 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7380 mSDsluCounter, 4031 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3604 mSDsCounter, 1693 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6880 IncrementalHoareTripleChecker+Invalid, 8573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1693 mSolverCounterUnsat, 428 mSDtfsCounter, 6880 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13954 GetRequests, 12413 SyntacticMatches, 1 SemanticMatches, 1540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51813 ImplicationChecksByTransitivity, 70.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25113occurred in iteration=17, InterpolantAutomatonStates: 1073, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 62104 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 105 NumberOfFragments, 1046 HoareAnnotationTreeSize, 1 FomulaSimplifications, 17185 FormulaSimplificationTreeSizeReduction, 1.9s HoareSimplificationTime, 1 FomulaSimplificationsInter, 1530 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 73.7s InterpolantComputationTime, 9688 NumberOfCodeBlocks, 9436 NumberOfCodeBlocksAsserted, 195 NumberOfCheckSat, 13711 ConstructedInterpolants, 0 QuantifiedInterpolants, 34533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 7680 ConjunctsInSsa, 530 ConjunctsInUnsatCore, 51 InterpolantComputations, 5 PerfectInterpolantSequences, 312098/677721 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((51 <= x && x <= 83) && y <= 19) || ((51 <= x && x <= 52) && y <= 50)) || ((x <= 1 && 1 <= x) && y <= 1)) || ((y <= 6 && x <= 96) && 51 <= x)) || ((y <= 9 && 9 <= x) && x <= 9)) || ((y <= 32 && 32 <= x) && x <= 32)) || ((51 <= x && x <= 51) && y <= 51)) || ((y <= 4 && x <= 4) && 4 <= x)) || ((x <= 70 && y <= 32) && 51 <= x)) || ((y <= 44 && 51 <= x) && x <= 58)) || ((y <= 27 && 27 <= x) && x <= 27)) || ((51 <= x && y <= 3) && x <= 99)) || ((y <= 43 && 43 <= x) && x <= 43)) || ((x <= 22 && 22 <= x) && y <= 22)) || ((y <= 2 && x <= 100) && 51 <= x)) || ((x <= 60 && y <= 42) && 51 <= x)) || ((y <= 44 && x <= 44) && 44 <= x)) || ((y <= 0 && 51 <= x) && x <= 102)) || ((x <= 72 && y <= 30) && 51 <= x)) || ((x <= 92 && y <= 10) && 51 <= x)) || ((y <= 9 && 51 <= x) && x <= 93)) || ((51 <= x && x <= 94) && y <= 8)) || ((x <= 29 && 29 <= x) && y <= 29)) || ((x <= 41 && y <= 41) && 41 <= x)) || ((x <= 25 && y <= 25) && 25 <= x)) || ((y <= 28 && x <= 28) && 28 <= x)) || ((y <= 37 && 51 <= x) && x <= 65)) || ((y <= 45 && 51 <= x) && x <= 57)) || ((x <= 66 && 51 <= x) && y <= 36)) || ((x <= 49 && 49 <= x) && y <= 49)) || ((20 <= x && y <= 20) && x <= 20)) || ((x <= 75 && y <= 27) && 51 <= x)) || ((x <= 11 && 11 <= x) && y <= 11)) || ((7 <= x && y <= 7) && x <= 7)) || ((y <= 26 && x <= 76) && 51 <= x)) || ((42 <= x && y <= 42) && x <= 42)) || ((x <= 48 && y <= 48) && 48 <= x)) || ((y <= 14 && 51 <= x) && x <= 88)) || ((x <= 31 && 31 <= x) && y <= 31)) || ((x <= 77 && y <= 25) && 51 <= x)) || ((y <= 24 && x <= 78) && 51 <= x)) || ((23 <= x && x <= 23) && y <= 23)) || ((y <= 4 && 51 <= x) && x <= 98)) || ((x <= 89 && 51 <= x) && y <= 13)) || ((y <= 1 && 51 <= x) && x <= 101)) || ((x <= 36 && 36 <= x) && y <= 36)) || ((x <= 71 && 51 <= x) && y <= 31)) || ((y <= 38 && x <= 38) && 38 <= x)) || ((y <= 12 && x <= 12) && 12 <= x)) || ((6 <= x && y <= 6) && x <= 6)) || ((x <= 53 && y <= 49) && 51 <= x)) || ((x <= 13 && y <= 13) && 13 <= x)) || ((39 <= x && y <= 39) && x <= 39)) || ((y <= 45 && x <= 45) && 45 <= x)) || ((19 <= x && x <= 19) && y <= 19)) || ((46 <= x && y <= 46) && x <= 46)) || ((x <= 84 && y <= 18) && 51 <= x)) || ((x <= 82 && y <= 20) && 51 <= x)) || ((17 <= x && y <= 17) && x <= 17)) || ((x <= 30 && y <= 30) && 30 <= x)) || ((51 <= x && x <= 79) && y <= 23)) || ((x <= 14 && y <= 14) && 14 <= x)) || ((x <= 68 && 51 <= x) && y <= 34)) || ((2 <= x && y <= 2) && x <= 2)) || ((y <= 40 && 40 <= x) && x <= 40)) || ((21 <= x && x <= 21) && y <= 21)) || ((x <= 85 && y <= 17) && 51 <= x)) || ((y <= 47 && x <= 55) && 51 <= x)) || ((x <= 16 && y <= 16) && 16 <= x)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 10 && x <= 10) && 10 <= x)) || ((y <= 28 && x <= 74) && 51 <= x)) || ((x <= 47 && y <= 47) && 47 <= x)) || ((x <= 56 && y <= 46) && 51 <= x)) || ((x <= 3 && y <= 3) && 3 <= x)) || ((x <= 86 && 51 <= x) && y <= 16)) || ((51 <= x && y <= 22) && x <= 80)) || ((y <= 21 && x <= 81) && 51 <= x)) || ((y <= 24 && 24 <= x) && x <= 24)) || ((y <= 33 && 51 <= x) && x <= 69)) || ((y <= 7 && x <= 95) && 51 <= x)) || ((y <= 43 && 51 <= x) && x <= 59)) || ((y <= 26 && x <= 26) && 26 <= x)) || (((0 <= x && 0 <= y) && y <= 0) && x <= 0)) || ((y <= 18 && x <= 18) && 18 <= x)) || ((y <= 48 && x <= 54) && 51 <= x)) || ((50 <= x && x <= 50) && y <= 50)) || ((5 <= x && x <= 5) && y <= 5)) || ((x <= 35 && y <= 35) && 35 <= x)) || ((8 <= x && x <= 8) && y <= 8)) || ((34 <= x && x <= 34) && y <= 34)) || ((y <= 5 && 51 <= x) && x <= 97)) || ((x <= 67 && y <= 35) && 51 <= x)) || ((y + 1 <= 0 && x <= 103) && 51 <= x)) || ((x <= 91 && y <= 11) && 51 <= x)) || ((y <= 15 && x <= 15) && 15 <= x)) || ((x <= 90 && y <= 12) && 51 <= x)) || ((x <= 63 && y <= 39) && 51 <= x)) || ((x <= 64 && y <= 38) && 51 <= x)) || ((x <= 33 && y <= 33) && 33 <= x)) || ((x <= 73 && y <= 29) && 51 <= x)) || ((x <= 61 && 51 <= x) && y <= 41)) || ((y <= 15 && x <= 87) && 51 <= x)) || ((y <= 37 && x <= 37) && 37 <= x) RESULT: Ultimate proved your program to be correct! [2021-11-25 18:29:44,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f23479-3266-48f5-b227-3f0e6b66edfc/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE