./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P --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 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:44:02,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:44:02,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:44:02,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:44:02,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:44:02,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:44:02,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:44:02,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:44:02,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:44:02,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:44:02,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:44:02,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:44:02,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:44:02,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:44:02,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:44:02,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:44:02,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:44:02,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:44:02,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:44:02,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:44:02,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:44:02,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:44:02,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:44:02,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:44:02,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:44:02,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:44:02,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:44:02,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:44:02,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:44:02,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:44:02,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:44:02,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:44:02,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:44:02,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:44:02,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:44:02,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:44:02,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:44:02,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:44:02,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:44:02,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:44:02,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:44:02,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-21 01:44:02,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:44:02,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:44:02,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:44:02,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:44:02,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:44:02,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:44:02,491 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:44:02,491 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:44:02,491 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:44:02,492 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:44:02,492 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:44:02,492 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:44:02,492 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:44:02,492 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:44:02,493 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:44:02,493 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:44:02,493 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:44:02,493 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:44:02,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:44:02,494 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:44:02,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:44:02,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:44:02,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:44:02,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:44:02,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:44:02,496 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 01:44:02,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:44:02,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:44:02,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:44:02,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:44:02,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:44:02,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:44:02,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:44:02,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:44:02,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:44:02,498 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:44:02,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:44:02,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:44:02,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:44:02,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:44:02,499 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_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 [2021-11-21 01:44:02,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:44:02,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:44:02,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:44:02,868 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:44:02,869 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:44:02,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-11-21 01:44:02,976 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/data/960bdd933/326b377536d442ca991c7ba877a3cd27/FLAG4fc8474db [2021-11-21 01:44:03,543 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:44:03,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-11-21 01:44:03,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/data/960bdd933/326b377536d442ca991c7ba877a3cd27/FLAG4fc8474db [2021-11-21 01:44:03,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/data/960bdd933/326b377536d442ca991c7ba877a3cd27 [2021-11-21 01:44:03,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:44:03,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:44:03,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:44:03,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:44:03,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:44:03,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:44:03" (1/1) ... [2021-11-21 01:44:03,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edb50ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:03, skipping insertion in model container [2021-11-21 01:44:03,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:44:03" (1/1) ... [2021-11-21 01:44:03,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:44:03,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:44:04,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:44:04,188 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:44:04,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:44:04,223 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:44:04,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04 WrapperNode [2021-11-21 01:44:04,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:44:04,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:44:04,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:44:04,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:44:04,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,268 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-11-21 01:44:04,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:44:04,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:44:04,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:44:04,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:44:04,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:44:04,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:44:04,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:44:04,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:44:04,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (1/1) ... [2021-11-21 01:44:04,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:44:04,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:04,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:44:04,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:44:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:44:04,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:44:04,510 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:44:04,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:44:04,680 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:44:04,719 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:44:04,721 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:44:04,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:44:04 BoogieIcfgContainer [2021-11-21 01:44:04,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:44:04,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:44:04,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:44:04,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:44:04,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:44:03" (1/3) ... [2021-11-21 01:44:04,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbd2473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:44:04, skipping insertion in model container [2021-11-21 01:44:04,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:04" (2/3) ... [2021-11-21 01:44:04,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbd2473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:44:04, skipping insertion in model container [2021-11-21 01:44:04,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:44:04" (3/3) ... [2021-11-21 01:44:04,741 INFO L111 eAbstractionObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2021-11-21 01:44:04,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:44:04,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-21 01:44:04,818 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:44:04,829 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 [2021-11-21 01:44:04,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-21 01:44:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:44:04,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:04,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:44:04,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2507698, now seen corresponding path program 1 times [2021-11-21 01:44:04,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:04,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356903734] [2021-11-21 01:44:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:04,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:05,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:05,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356903734] [2021-11-21 01:44:05,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356903734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:44:05,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:44:05,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:44:05,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225813112] [2021-11-21 01:44:05,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:44:05,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:44:05,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:05,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:44:05,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:44:05,264 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:05,385 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-11-21 01:44:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:44:05,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-21 01:44:05,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:05,397 INFO L225 Difference]: With dead ends: 38 [2021-11-21 01:44:05,397 INFO L226 Difference]: Without dead ends: 31 [2021-11-21 01:44:05,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:44:05,405 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:05,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 20 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:44:05,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-21 01:44:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2021-11-21 01:44:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-21 01:44:05,444 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2021-11-21 01:44:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:05,444 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-21 01:44:05,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-21 01:44:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:44:05,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:05,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:44:05,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:44:05,446 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:05,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash 77779592, now seen corresponding path program 1 times [2021-11-21 01:44:05,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:05,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723180488] [2021-11-21 01:44:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:05,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:05,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:05,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:05,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723180488] [2021-11-21 01:44:05,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723180488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:44:05,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:44:05,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:44:05,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63832360] [2021-11-21 01:44:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:44:05,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:44:05,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:05,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:44:05,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:44:05,486 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:05,525 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-11-21 01:44:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:44:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 01:44:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:05,526 INFO L225 Difference]: With dead ends: 31 [2021-11-21 01:44:05,526 INFO L226 Difference]: Without dead ends: 21 [2021-11-21 01:44:05,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:44:05,529 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:05,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:44:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-21 01:44:05,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-21 01:44:05,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-21 01:44:05,536 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2021-11-21 01:44:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:05,536 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-21 01:44:05,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,537 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-21 01:44:05,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:44:05,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:05,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:44:05,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:44:05,538 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:05,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:05,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1885067980, now seen corresponding path program 1 times [2021-11-21 01:44:05,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:05,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110050289] [2021-11-21 01:44:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:05,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:05,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:05,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110050289] [2021-11-21 01:44:05,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110050289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:44:05,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:44:05,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:44:05,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447406154] [2021-11-21 01:44:05,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:44:05,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:44:05,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:44:05,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:44:05,566 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:05,613 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-11-21 01:44:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:44:05,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:44:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:05,616 INFO L225 Difference]: With dead ends: 24 [2021-11-21 01:44:05,616 INFO L226 Difference]: Without dead ends: 23 [2021-11-21 01:44:05,617 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 [2021-11-21 01:44:05,619 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 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 [2021-11-21 01:44:05,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:44:05,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-21 01:44:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-21 01:44:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.4375) 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) [2021-11-21 01:44:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-21 01:44:05,629 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 6 [2021-11-21 01:44:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:05,630 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-21 01:44:05,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-21 01:44:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:44:05,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:05,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:44:05,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:44:05,632 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1692434816, now seen corresponding path program 1 times [2021-11-21 01:44:05,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:05,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52787500] [2021-11-21 01:44:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:05,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:05,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:05,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52787500] [2021-11-21 01:44:05,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52787500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:44:05,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:44:05,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:44:05,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84602915] [2021-11-21 01:44:05,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:44:05,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:44:05,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:44:05,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:44:05,681 INFO L87 Difference]: Start difference. First operand 22 states and 23 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) [2021-11-21 01:44:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:05,712 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-21 01:44:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:44:05,713 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 [2021-11-21 01:44:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:05,714 INFO L225 Difference]: With dead ends: 30 [2021-11-21 01:44:05,714 INFO L226 Difference]: Without dead ends: 28 [2021-11-21 01:44:05,715 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 [2021-11-21 01:44:05,716 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:05,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:44:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-21 01:44:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-11-21 01:44:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 25 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) [2021-11-21 01:44:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-21 01:44:05,723 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2021-11-21 01:44:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:05,724 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-21 01:44:05,724 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) [2021-11-21 01:44:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-21 01:44:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:44:05,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:05,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:44:05,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:44:05,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:05,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:05,726 INFO L85 PathProgramCache]: Analyzing trace with hash 704600376, now seen corresponding path program 1 times [2021-11-21 01:44:05,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:05,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851764765] [2021-11-21 01:44:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:05,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:44:05,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:05,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851764765] [2021-11-21 01:44:05,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851764765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:44:05,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:44:05,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:44:05,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354120281] [2021-11-21 01:44:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:44:05,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:44:05,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:44:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:44:05,791 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:05,823 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-11-21 01:44:05,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:44:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:44:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:05,825 INFO L225 Difference]: With dead ends: 27 [2021-11-21 01:44:05,826 INFO L226 Difference]: Without dead ends: 26 [2021-11-21 01:44:05,826 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 [2021-11-21 01:44:05,828 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:05,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:44:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-21 01:44:05,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-21 01:44:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-21 01:44:05,843 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2021-11-21 01:44:05,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:05,845 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-21 01:44:05,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-21 01:44:05,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:44:05,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:05,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:44:05,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:44:05,849 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:05,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash 367775243, now seen corresponding path program 1 times [2021-11-21 01:44:05,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:05,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964708660] [2021-11-21 01:44:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:05,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:05,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:05,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964708660] [2021-11-21 01:44:05,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964708660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:44:05,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:44:05,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:44:05,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234631776] [2021-11-21 01:44:05,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:44:05,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:44:05,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:44:05,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:44:05,903 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:05,925 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-21 01:44:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:44:05,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:44:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:05,926 INFO L225 Difference]: With dead ends: 26 [2021-11-21 01:44:05,926 INFO L226 Difference]: Without dead ends: 25 [2021-11-21 01:44:05,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:44:05,928 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:05,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:44:05,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-21 01:44:05,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-21 01:44:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-21 01:44:05,934 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 11 [2021-11-21 01:44:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:05,935 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-21 01:44:05,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:05,935 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-21 01:44:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:44:05,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:05,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 01:44:05,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:44:05,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:05,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash 366507140, now seen corresponding path program 1 times [2021-11-21 01:44:05,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:05,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398338287] [2021-11-21 01:44:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:05,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:05,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:05,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398338287] [2021-11-21 01:44:05,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398338287] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:05,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527128265] [2021-11-21 01:44:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:05,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:05,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:05,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:05,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:44:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:06,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:44:06,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:06,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:06,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527128265] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:06,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913989017] [2021-11-21 01:44:06,290 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:44:06,291 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:06,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:06,303 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:06,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:07,126 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:07,408 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:07,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:07,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-21 01:44:07,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206082694] [2021-11-21 01:44:07,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:07,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:44:07,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:44:07,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:44:07,411 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2021-11-21 01:44:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:07,481 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2021-11-21 01:44:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:44:07,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) Word has length 11 [2021-11-21 01:44:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:07,485 INFO L225 Difference]: With dead ends: 69 [2021-11-21 01:44:07,485 INFO L226 Difference]: Without dead ends: 67 [2021-11-21 01:44:07,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:44:07,491 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:07,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 40 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:44:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-21 01:44:07,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2021-11-21 01:44:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-11-21 01:44:07,498 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 11 [2021-11-21 01:44:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:07,499 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-11-21 01:44:07,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2021-11-21 01:44:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-11-21 01:44:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:44:07,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:07,500 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:44:07,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:07,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:07,701 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2146418545, now seen corresponding path program 1 times [2021-11-21 01:44:07,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:07,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298657699] [2021-11-21 01:44:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:07,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:44:07,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:07,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298657699] [2021-11-21 01:44:07,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298657699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:07,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583281592] [2021-11-21 01:44:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:07,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:07,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:07,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:07,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:44:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:07,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:44:07,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:44:07,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:44:07,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583281592] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:07,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [738823928] [2021-11-21 01:44:07,898 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:44:07,898 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:07,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:07,898 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:07,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:08,924 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:09,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [738823928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:44:09,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:09,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [3, 3, 3] total 14 [2021-11-21 01:44:09,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465423376] [2021-11-21 01:44:09,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:44:09,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:44:09,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:09,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:44:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:44:09,176 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:10,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:10,116 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2021-11-21 01:44:10,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:44:10,116 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 01:44:10,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:10,117 INFO L225 Difference]: With dead ends: 56 [2021-11-21 01:44:10,117 INFO L226 Difference]: Without dead ends: 54 [2021-11-21 01:44:10,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:44:10,119 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:10,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:44:10,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-21 01:44:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2021-11-21 01:44:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-11-21 01:44:10,126 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 15 [2021-11-21 01:44:10,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:10,126 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-11-21 01:44:10,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-11-21 01:44:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:44:10,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:10,127 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:44:10,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:10,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 01:44:10,342 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:10,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash -481704650, now seen corresponding path program 1 times [2021-11-21 01:44:10,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:10,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259493452] [2021-11-21 01:44:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:10,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:10,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:10,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259493452] [2021-11-21 01:44:10,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259493452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:10,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101971895] [2021-11-21 01:44:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:10,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:10,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:10,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:10,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:44:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:10,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:44:10,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:10,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:10,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101971895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:10,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [184860610] [2021-11-21 01:44:10,533 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:44:10,534 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:10,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:10,534 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:10,534 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:11,508 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:11,796 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:11,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:11,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-21 01:44:11,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008429029] [2021-11-21 01:44:11,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:11,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:44:11,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:11,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:44:11,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:44:11,799 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:11,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:11,828 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-11-21 01:44:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:44:11,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 01:44:11,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:11,831 INFO L225 Difference]: With dead ends: 54 [2021-11-21 01:44:11,831 INFO L226 Difference]: Without dead ends: 53 [2021-11-21 01:44:11,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:44:11,832 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:11,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:44:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-21 01:44:11,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-21 01:44:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-11-21 01:44:11,840 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 18 [2021-11-21 01:44:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:11,841 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-11-21 01:44:11,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-11-21 01:44:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:44:11,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:11,842 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2021-11-21 01:44:11,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:12,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:12,062 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1672464692, now seen corresponding path program 2 times [2021-11-21 01:44:12,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709692286] [2021-11-21 01:44:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:12,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:12,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:12,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709692286] [2021-11-21 01:44:12,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709692286] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:12,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881312003] [2021-11-21 01:44:12,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:44:12,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:12,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:12,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:12,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:44:12,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:44:12,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:44:12,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:44:12,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:12,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:12,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881312003] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:12,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1004276260] [2021-11-21 01:44:12,324 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:44:12,324 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:12,325 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:12,325 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:12,325 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:12,827 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:13,034 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:13,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:13,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-21 01:44:13,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562863124] [2021-11-21 01:44:13,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:13,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:44:13,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:44:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:44:13,036 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:13,146 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2021-11-21 01:44:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:44:13,149 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 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 26 [2021-11-21 01:44:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:13,154 INFO L225 Difference]: With dead ends: 229 [2021-11-21 01:44:13,154 INFO L226 Difference]: Without dead ends: 228 [2021-11-21 01:44:13,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:44:13,155 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 105 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:13,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 71 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:44:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-21 01:44:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 83. [2021-11-21 01:44:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 82 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2021-11-21 01:44:13,184 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 26 [2021-11-21 01:44:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:13,189 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2021-11-21 01:44:13,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2021-11-21 01:44:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 01:44:13,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:13,191 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:44:13,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:13,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 01:44:13,406 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:13,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash -919616723, now seen corresponding path program 2 times [2021-11-21 01:44:13,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:13,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73413027] [2021-11-21 01:44:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:13,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:13,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:13,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73413027] [2021-11-21 01:44:13,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73413027] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:13,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938500875] [2021-11-21 01:44:13,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:44:13,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:13,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:13,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:13,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:44:13,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:44:13,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:44:13,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:44:13,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:13,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:13,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938500875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:13,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1347445838] [2021-11-21 01:44:13,800 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:44:13,800 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:13,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:13,801 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:13,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:14,735 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:14,998 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:14,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:14,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-21 01:44:14,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940474872] [2021-11-21 01:44:14,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:14,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:44:14,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:44:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:44:15,000 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:15,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:15,055 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-11-21 01:44:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:44:15,056 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-21 01:44:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:15,057 INFO L225 Difference]: With dead ends: 114 [2021-11-21 01:44:15,057 INFO L226 Difference]: Without dead ends: 113 [2021-11-21 01:44:15,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:44:15,058 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:15,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 45 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:44:15,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-21 01:44:15,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-21 01:44:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.1081081081081081) internal successors, (123), 112 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2021-11-21 01:44:15,068 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 33 [2021-11-21 01:44:15,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:15,069 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2021-11-21 01:44:15,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2021-11-21 01:44:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-21 01:44:15,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:15,071 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2021-11-21 01:44:15,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:15,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:15,298 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:15,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash 996441908, now seen corresponding path program 3 times [2021-11-21 01:44:15,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:15,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253803719] [2021-11-21 01:44:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:15,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:15,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:15,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253803719] [2021-11-21 01:44:15,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253803719] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541999139] [2021-11-21 01:44:15,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:44:15,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:15,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:15,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:15,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:44:15,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:44:15,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:44:15,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:44:15,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:15,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:15,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541999139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:15,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [957438976] [2021-11-21 01:44:15,884 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:44:15,884 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:15,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:15,884 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:15,885 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:16,336 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:16,500 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:16,500 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:16,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-21 01:44:16,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644259232] [2021-11-21 01:44:16,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:16,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-21 01:44:16,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:16,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-21 01:44:16,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:44:16,503 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:16,744 INFO L93 Difference]: Finished difference Result 829 states and 864 transitions. [2021-11-21 01:44:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 01:44:16,745 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 56 [2021-11-21 01:44:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:16,750 INFO L225 Difference]: With dead ends: 829 [2021-11-21 01:44:16,750 INFO L226 Difference]: Without dead ends: 828 [2021-11-21 01:44:16,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:44:16,752 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 372 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:16,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 143 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:44:16,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-11-21 01:44:16,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 173. [2021-11-21 01:44:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 172 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 195 transitions. [2021-11-21 01:44:16,792 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 195 transitions. Word has length 56 [2021-11-21 01:44:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:16,795 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 195 transitions. [2021-11-21 01:44:16,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:16,795 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 195 transitions. [2021-11-21 01:44:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-21 01:44:16,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:16,801 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:44:16,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:17,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 01:44:17,010 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:17,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:17,011 INFO L85 PathProgramCache]: Analyzing trace with hash 173255693, now seen corresponding path program 3 times [2021-11-21 01:44:17,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:17,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409291173] [2021-11-21 01:44:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:17,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:17,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:17,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409291173] [2021-11-21 01:44:17,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409291173] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:17,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831627224] [2021-11-21 01:44:17,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:44:17,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:17,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:17,162 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:17,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:44:17,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:44:17,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:44:17,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 01:44:17,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:17,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:17,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831627224] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:17,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2064848998] [2021-11-21 01:44:17,638 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:44:17,638 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:17,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:17,638 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:17,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:18,536 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:18,788 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:18,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:18,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-21 01:44:18,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422215970] [2021-11-21 01:44:18,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:18,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-21 01:44:18,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:18,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-21 01:44:18,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 01:44:18,792 INFO L87 Difference]: Start difference. First operand 173 states and 195 transitions. Second operand has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:18,892 INFO L93 Difference]: Finished difference Result 234 states and 267 transitions. [2021-11-21 01:44:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 01:44:18,893 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 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 63 [2021-11-21 01:44:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:18,895 INFO L225 Difference]: With dead ends: 234 [2021-11-21 01:44:18,895 INFO L226 Difference]: Without dead ends: 233 [2021-11-21 01:44:18,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 01:44:18,897 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:18,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 81 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:44:18,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-21 01:44:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-21 01:44:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 231 states have (on average 1.103896103896104) internal successors, (255), 232 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 255 transitions. [2021-11-21 01:44:18,909 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 255 transitions. Word has length 63 [2021-11-21 01:44:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 255 transitions. [2021-11-21 01:44:18,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.478260869565218) internal successors, (126), 23 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 255 transitions. [2021-11-21 01:44:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-21 01:44:18,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:18,913 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1] [2021-11-21 01:44:18,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:19,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-21 01:44:19,135 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash -263820492, now seen corresponding path program 4 times [2021-11-21 01:44:19,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:19,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951837706] [2021-11-21 01:44:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:19,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:19,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:19,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951837706] [2021-11-21 01:44:19,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951837706] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:19,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193843684] [2021-11-21 01:44:19,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:44:19,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:19,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:19,552 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:19,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:44:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:19,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 01:44:19,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:19,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:20,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193843684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:20,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [361527008] [2021-11-21 01:44:20,704 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:44:20,704 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:20,705 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:20,705 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:20,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:21,173 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:21,447 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:21,447 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:21,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-21 01:44:21,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528495249] [2021-11-21 01:44:21,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:21,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-21 01:44:21,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-21 01:44:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2021-11-21 01:44:21,452 INFO L87 Difference]: Start difference. First operand 233 states and 255 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:22,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:22,072 INFO L93 Difference]: Finished difference Result 3109 states and 3180 transitions. [2021-11-21 01:44:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-21 01:44:22,073 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 0 states have call successors, (0), 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 116 [2021-11-21 01:44:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:22,091 INFO L225 Difference]: With dead ends: 3109 [2021-11-21 01:44:22,091 INFO L226 Difference]: Without dead ends: 3108 [2021-11-21 01:44:22,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2021-11-21 01:44:22,096 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 864 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:22,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 287 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:44:22,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-11-21 01:44:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 353. [2021-11-21 01:44:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 351 states have (on average 1.1367521367521367) internal successors, (399), 352 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 399 transitions. [2021-11-21 01:44:22,134 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 399 transitions. Word has length 116 [2021-11-21 01:44:22,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:22,135 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 399 transitions. [2021-11-21 01:44:22,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 47 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:22,135 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 399 transitions. [2021-11-21 01:44:22,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 01:44:22,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:22,137 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:44:22,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:22,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:22,365 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:22,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:22,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1603983923, now seen corresponding path program 4 times [2021-11-21 01:44:22,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:22,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53078563] [2021-11-21 01:44:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:22,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:22,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:22,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53078563] [2021-11-21 01:44:22,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53078563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:22,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398535845] [2021-11-21 01:44:22,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:44:22,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:22,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:22,757 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:22,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:44:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:22,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:44:22,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:23,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:23,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:24,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398535845] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:24,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [846502195] [2021-11-21 01:44:24,276 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:44:24,276 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:24,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:24,277 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:24,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:25,157 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:25,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:25,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:25,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-21 01:44:25,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541330559] [2021-11-21 01:44:25,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:25,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-21 01:44:25,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-21 01:44:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1925, Unknown=0, NotChecked=0, Total=3306 [2021-11-21 01:44:25,560 INFO L87 Difference]: Start difference. First operand 353 states and 399 transitions. Second operand has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:25,758 INFO L93 Difference]: Finished difference Result 474 states and 543 transitions. [2021-11-21 01:44:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-21 01:44:25,759 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 0 states have call successors, (0), 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 123 [2021-11-21 01:44:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:25,763 INFO L225 Difference]: With dead ends: 474 [2021-11-21 01:44:25,763 INFO L226 Difference]: Without dead ends: 473 [2021-11-21 01:44:25,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1381, Invalid=1925, Unknown=0, NotChecked=0, Total=3306 [2021-11-21 01:44:25,770 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:25,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 153 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:44:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-21 01:44:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2021-11-21 01:44:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 1.1019108280254777) internal successors, (519), 472 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 519 transitions. [2021-11-21 01:44:25,793 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 519 transitions. Word has length 123 [2021-11-21 01:44:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:25,794 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 519 transitions. [2021-11-21 01:44:25,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 519 transitions. [2021-11-21 01:44:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-21 01:44:25,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:25,800 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1] [2021-11-21 01:44:25,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:26,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 01:44:26,014 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash -697547980, now seen corresponding path program 5 times [2021-11-21 01:44:26,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:26,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771207646] [2021-11-21 01:44:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:26,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:27,266 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:27,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771207646] [2021-11-21 01:44:27,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771207646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:27,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198073430] [2021-11-21 01:44:27,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:44:27,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:27,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:27,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:27,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:44:27,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-21 01:44:27,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:44:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-21 01:44:27,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:28,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:31,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198073430] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:31,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1006557492] [2021-11-21 01:44:31,425 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:44:31,425 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:31,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:31,425 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:31,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:31,815 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:32,092 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:32,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:32,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-21 01:44:32,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94163481] [2021-11-21 01:44:32,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:32,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-21 01:44:32,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-21 01:44:32,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2021-11-21 01:44:32,099 INFO L87 Difference]: Start difference. First operand 473 states and 519 transitions. Second operand has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:35,712 INFO L93 Difference]: Finished difference Result 11989 states and 12132 transitions. [2021-11-21 01:44:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-21 01:44:35,712 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 0 states have call successors, (0), 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 236 [2021-11-21 01:44:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:35,784 INFO L225 Difference]: With dead ends: 11989 [2021-11-21 01:44:35,784 INFO L226 Difference]: Without dead ends: 11988 [2021-11-21 01:44:35,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2021-11-21 01:44:35,800 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1855 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:35,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 575 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:44:35,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11988 states. [2021-11-21 01:44:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11988 to 713. [2021-11-21 01:44:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 711 states have (on average 1.1350210970464134) internal successors, (807), 712 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 807 transitions. [2021-11-21 01:44:35,920 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 807 transitions. Word has length 236 [2021-11-21 01:44:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:35,921 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 807 transitions. [2021-11-21 01:44:35,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 95 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:35,921 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 807 transitions. [2021-11-21 01:44:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-21 01:44:35,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:35,926 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:44:35,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:36,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 01:44:36,154 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:36,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:36,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1337375053, now seen corresponding path program 5 times [2021-11-21 01:44:36,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:36,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847523486] [2021-11-21 01:44:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:36,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:37,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847523486] [2021-11-21 01:44:37,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847523486] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190168675] [2021-11-21 01:44:37,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:44:37,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:37,636 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:37,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 01:44:37,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-21 01:44:37,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:44:37,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-21 01:44:37,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:38,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:41,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190168675] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:41,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2087091191] [2021-11-21 01:44:41,180 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:44:41,180 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:41,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:41,181 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:41,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:41,921 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:42,235 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:42,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:42,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-21 01:44:42,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870361496] [2021-11-21 01:44:42,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:42,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-21 01:44:42,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:42,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-21 01:44:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5053, Invalid=6077, Unknown=0, NotChecked=0, Total=11130 [2021-11-21 01:44:42,243 INFO L87 Difference]: Start difference. First operand 713 states and 807 transitions. Second operand has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:42,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:44:42,662 INFO L93 Difference]: Finished difference Result 954 states and 1095 transitions. [2021-11-21 01:44:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-21 01:44:42,663 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 0 states have call successors, (0), 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 243 [2021-11-21 01:44:42,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:44:42,668 INFO L225 Difference]: With dead ends: 954 [2021-11-21 01:44:42,668 INFO L226 Difference]: Without dead ends: 953 [2021-11-21 01:44:42,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 671 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5053, Invalid=6077, Unknown=0, NotChecked=0, Total=11130 [2021-11-21 01:44:42,675 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:44:42,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 297 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:44:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-11-21 01:44:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 953. [2021-11-21 01:44:42,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 951 states have (on average 1.1009463722397477) internal successors, (1047), 952 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1047 transitions. [2021-11-21 01:44:42,708 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1047 transitions. Word has length 243 [2021-11-21 01:44:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:44:42,708 INFO L470 AbstractCegarLoop]: Abstraction has 953 states and 1047 transitions. [2021-11-21 01:44:42,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.11578947368421) internal successors, (486), 95 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:44:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1047 transitions. [2021-11-21 01:44:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-21 01:44:42,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:44:42,720 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1] [2021-11-21 01:44:42,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:44:42,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 01:44:42,946 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:44:42,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:44:42,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2009074892, now seen corresponding path program 6 times [2021-11-21 01:44:42,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:44:42,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510864360] [2021-11-21 01:44:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:44:42,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:44:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:44:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:46,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:46,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510864360] [2021-11-21 01:44:46,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510864360] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:46,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601196127] [2021-11-21 01:44:46,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:44:46,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:44:46,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:44:46,296 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:44:46,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 01:44:46,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:44:46,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:44:46,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-21 01:44:46,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:44:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:47,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:44:56,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601196127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:56,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1242329563] [2021-11-21 01:44:56,470 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:44:56,470 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:56,470 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:56,470 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:56,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:56,859 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:57,238 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:57,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:44:57,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-21 01:44:57,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875151576] [2021-11-21 01:44:57,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:57,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-21 01:44:57,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-21 01:44:57,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2021-11-21 01:44:57,250 INFO L87 Difference]: Start difference. First operand 953 states and 1047 transitions. Second operand has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:45:16,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:45:16,992 INFO L93 Difference]: Finished difference Result 47029 states and 47316 transitions. [2021-11-21 01:45:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-21 01:45:16,993 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 0 states have call successors, (0), 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 476 [2021-11-21 01:45:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:45:17,110 INFO L225 Difference]: With dead ends: 47029 [2021-11-21 01:45:17,111 INFO L226 Difference]: Without dead ends: 47028 [2021-11-21 01:45:17,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1325 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2021-11-21 01:45:17,152 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 4405 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:45:17,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4405 Valid, 1151 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 01:45:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47028 states. [2021-11-21 01:45:17,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47028 to 1433. [2021-11-21 01:45:17,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1431 states have (on average 1.1341719077568133) internal successors, (1623), 1432 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:45:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1623 transitions. [2021-11-21 01:45:17,492 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1623 transitions. Word has length 476 [2021-11-21 01:45:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:45:17,493 INFO L470 AbstractCegarLoop]: Abstraction has 1433 states and 1623 transitions. [2021-11-21 01:45:17,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 191 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:45:17,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1623 transitions. [2021-11-21 01:45:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2021-11-21 01:45:17,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:45:17,507 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:45:17,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:45:17,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-21 01:45:17,722 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:45:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:45:17,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1465147469, now seen corresponding path program 6 times [2021-11-21 01:45:17,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:45:17,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036809789] [2021-11-21 01:45:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:45:17,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:45:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:45:21,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:45:21,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036809789] [2021-11-21 01:45:21,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036809789] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:45:21,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398901009] [2021-11-21 01:45:21,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:45:21,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:45:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:45:21,138 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:45:21,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 01:45:21,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:45:21,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:45:21,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-21 01:45:21,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:45:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:45:22,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:45:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:45:32,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398901009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:45:32,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [298443032] [2021-11-21 01:45:32,181 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:45:32,182 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:45:32,182 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:45:32,182 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:45:32,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:45:32,959 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:45:33,425 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:45:33,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:45:33,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-21 01:45:33,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725004611] [2021-11-21 01:45:33,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:45:33,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-21 01:45:33,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:45:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-21 01:45:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19309, Invalid=21293, Unknown=0, NotChecked=0, Total=40602 [2021-11-21 01:45:33,439 INFO L87 Difference]: Start difference. First operand 1433 states and 1623 transitions. Second operand has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:45:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:45:34,869 INFO L93 Difference]: Finished difference Result 1914 states and 2199 transitions. [2021-11-21 01:45:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-21 01:45:34,870 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 0 states have call successors, (0), 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 483 [2021-11-21 01:45:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:45:34,875 INFO L225 Difference]: With dead ends: 1914 [2021-11-21 01:45:34,875 INFO L226 Difference]: Without dead ends: 1913 [2021-11-21 01:45:34,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1543 GetRequests, 1343 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3695 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=19309, Invalid=21293, Unknown=0, NotChecked=0, Total=40602 [2021-11-21 01:45:34,880 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:45:34,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 585 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:45:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2021-11-21 01:45:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1913. [2021-11-21 01:45:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1911 states have (on average 1.1004709576138147) internal successors, (2103), 1912 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:45:34,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2103 transitions. [2021-11-21 01:45:34,930 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2103 transitions. Word has length 483 [2021-11-21 01:45:34,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:45:34,932 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 2103 transitions. [2021-11-21 01:45:34,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.057591623036649) internal successors, (966), 191 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:45:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2103 transitions. [2021-11-21 01:45:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2021-11-21 01:45:34,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:45:34,946 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1] [2021-11-21 01:45:34,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:45:35,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:45:35,174 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:45:35,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:45:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash 570905396, now seen corresponding path program 7 times [2021-11-21 01:45:35,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:45:35,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060336512] [2021-11-21 01:45:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:45:35,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:45:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:45:48,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:45:48,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060336512] [2021-11-21 01:45:48,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060336512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:45:48,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632248185] [2021-11-21 01:45:48,372 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:45:48,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:45:48,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:45:48,374 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:45:48,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-21 01:45:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:48,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-21 01:45:48,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:45:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:45:51,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:46:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:46:35,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632248185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:46:35,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152469794] [2021-11-21 01:46:35,012 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:46:35,012 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:46:35,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:46:35,013 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:46:35,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:46:35,447 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:46:36,192 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:46:36,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:46:36,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-21 01:46:36,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956212130] [2021-11-21 01:46:36,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:46:36,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-21 01:46:36,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:36,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-21 01:46:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2021-11-21 01:46:36,222 INFO L87 Difference]: Start difference. First operand 1913 states and 2103 transitions. Second operand has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:53:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:53:15,686 INFO L93 Difference]: Finished difference Result 186229 states and 186804 transitions. [2021-11-21 01:53:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-21 01:53:15,688 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 0 states have call successors, (0), 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 956 [2021-11-21 01:53:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:53:16,031 INFO L225 Difference]: With dead ends: 186229 [2021-11-21 01:53:16,031 INFO L226 Difference]: Without dead ends: 186228 [2021-11-21 01:53:16,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3057 GetRequests, 2669 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3624 ImplicationChecksByTransitivity, 54.4s TimeCoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2021-11-21 01:53:16,141 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9989 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9989 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:53:16,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9989 Valid, 2303 Invalid, 4053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2125 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 01:53:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186228 states. [2021-11-21 01:53:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186228 to 2873. [2021-11-21 01:53:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2871 states have (on average 1.1337513061650992) internal successors, (3255), 2872 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:53:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3255 transitions. [2021-11-21 01:53:17,748 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3255 transitions. Word has length 956 [2021-11-21 01:53:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:53:17,751 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3255 transitions. [2021-11-21 01:53:17,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.992167101827676) internal successors, (1912), 383 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:53:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3255 transitions. [2021-11-21 01:53:17,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2021-11-21 01:53:17,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:53:17,770 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:53:17,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:53:17,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:53:17,994 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:53:17,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:53:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1401311667, now seen corresponding path program 7 times [2021-11-21 01:53:17,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:53:17,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881314423] [2021-11-21 01:53:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:53:17,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:53:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:53:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:53:34,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:53:34,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881314423] [2021-11-21 01:53:34,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881314423] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:53:34,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082130242] [2021-11-21 01:53:34,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:53:34,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:53:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:53:34,353 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:53:34,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-21 01:53:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:53:34,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 193 conjunts are in the unsatisfiable core [2021-11-21 01:53:34,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:53:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:53:37,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:54:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:54:23,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082130242] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:54:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1996448780] [2021-11-21 01:54:23,014 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:54:23,015 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:54:23,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:54:23,015 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:54:23,016 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:54:23,939 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:54:24,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:54:24,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:54:24,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-21 01:54:24,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043294403] [2021-11-21 01:54:24,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:54:24,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-21 01:54:24,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:54:24,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-21 01:54:24,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75469, Invalid=79373, Unknown=0, NotChecked=0, Total=154842 [2021-11-21 01:54:24,901 INFO L87 Difference]: Start difference. First operand 2873 states and 3255 transitions. Second operand has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:54:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:54:34,796 INFO L93 Difference]: Finished difference Result 3834 states and 4407 transitions. [2021-11-21 01:54:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-21 01:54:34,798 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 0 states have call successors, (0), 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 963 [2021-11-21 01:54:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:54:34,807 INFO L225 Difference]: With dead ends: 3834 [2021-11-21 01:54:34,807 INFO L226 Difference]: Without dead ends: 3833 [2021-11-21 01:54:34,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3079 GetRequests, 2687 SyntacticMatches, 0 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7439 ImplicationChecksByTransitivity, 59.2s TimeCoverageRelationStatistics Valid=75469, Invalid=79373, Unknown=0, NotChecked=0, Total=154842 [2021-11-21 01:54:34,821 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:54:34,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1161 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:54:34,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2021-11-21 01:54:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3833. [2021-11-21 01:54:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3831 states have (on average 1.100234925606891) internal successors, (4215), 3832 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:54:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 4215 transitions. [2021-11-21 01:54:34,934 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 4215 transitions. Word has length 963 [2021-11-21 01:54:34,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:54:34,936 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 4215 transitions. [2021-11-21 01:54:34,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.028720626631854) internal successors, (1926), 383 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:54:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 4215 transitions. [2021-11-21 01:54:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1917 [2021-11-21 01:54:34,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:54:34,982 INFO L514 BasicCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1, 1] [2021-11-21 01:54:35,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:54:35,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:54:35,198 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:54:35,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:54:35,199 INFO L85 PathProgramCache]: Analyzing trace with hash 773198644, now seen corresponding path program 8 times [2021-11-21 01:54:35,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:54:35,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896462986] [2021-11-21 01:54:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:54:35,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:54:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:32,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:32,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896462986] [2021-11-21 01:55:32,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896462986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:55:32,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748755378] [2021-11-21 01:55:32,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:55:32,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:55:32,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:55:32,993 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:55:32,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9949dba-5d8c-4cfc-b955-5c863859fad6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-21 01:55:37,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-21 01:55:37,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:55:38,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 3456 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-21 01:55:38,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:55:42,862 INFO L328 TraceCheckSpWp]: Computing backward predicates...