./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG --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 cf5951cf7c939342bb5d014c8a7a12e4f95042e50c8d2f477b21d0a3234d49fe ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:35:48,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:35:48,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:35:48,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:35:48,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:35:48,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:35:48,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:35:48,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:35:48,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:35:48,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:35:48,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:35:48,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:35:48,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:35:48,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:35:48,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:35:48,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:35:48,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:35:48,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:35:48,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:35:48,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:35:48,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:35:48,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:35:48,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:35:48,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:35:48,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:35:48,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:35:48,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:35:48,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:35:48,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:35:48,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:35:48,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:35:48,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:35:48,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:35:48,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:35:48,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:35:48,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:35:48,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:35:48,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:35:48,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:35:48,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:35:48,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:35:48,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-29 05:35:48,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:35:48,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:35:48,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:35:48,415 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:35:48,416 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:35:48,416 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:35:48,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:35:48,417 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:35:48,425 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:35:48,426 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:35:48,427 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:35:48,427 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:35:48,428 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:35:48,428 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:35:48,428 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:35:48,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:35:48,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:35:48,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:35:48,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:35:48,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:35:48,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:35:48,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:35:48,431 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-29 05:35:48,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:35:48,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:35:48,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:35:48,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:35:48,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:35:48,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:35:48,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:35:48,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:35:48,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:35:48,438 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:35:48,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:35:48,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:35:48,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:35:48,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:35:48,439 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_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf5951cf7c939342bb5d014c8a7a12e4f95042e50c8d2f477b21d0a3234d49fe [2021-10-29 05:35:48,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:35:48,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:35:48,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:35:48,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:35:48,851 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:35:48,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2021-10-29 05:35:48,974 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/data/cca6a83d7/9932b16ad4c747d7a06973bc928550be/FLAG2d5f06c17 [2021-10-29 05:35:49,687 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:35:49,687 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2021-10-29 05:35:49,695 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/data/cca6a83d7/9932b16ad4c747d7a06973bc928550be/FLAG2d5f06c17 [2021-10-29 05:35:50,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/data/cca6a83d7/9932b16ad4c747d7a06973bc928550be [2021-10-29 05:35:50,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:35:50,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:35:50,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:35:50,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:35:50,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:35:50,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c32c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50, skipping insertion in model container [2021-10-29 05:35:50,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:35:50,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:35:50,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:35:50,369 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:35:50,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:35:50,402 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:35:50,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50 WrapperNode [2021-10-29 05:35:50,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:35:50,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:35:50,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:35:50,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:35:50,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:35:50,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:35:50,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:35:50,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:35:50,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:35:50,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:35:50,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:35:50,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:35:50,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (1/1) ... [2021-10-29 05:35:50,487 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:35:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:35:50,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:35:50,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:35:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:35:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:35:50,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:35:50,886 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:35:50,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:35:50 BoogieIcfgContainer [2021-10-29 05:35:50,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:35:50,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:35:50,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:35:50,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:35:50,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:35:50" (1/3) ... [2021-10-29 05:35:50,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2d3aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:35:50, skipping insertion in model container [2021-10-29 05:35:50,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:35:50" (2/3) ... [2021-10-29 05:35:50,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2d3aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:35:50, skipping insertion in model container [2021-10-29 05:35:50,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:35:50" (3/3) ... [2021-10-29 05:35:50,901 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction.c [2021-10-29 05:35:50,908 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:35:50,908 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-29 05:35:50,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:35:50,978 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 [2021-10-29 05:35:50,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-29 05:35:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 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) [2021-10-29 05:35:51,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:35:51,009 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:51,010 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:35:51,011 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:35:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-29 05:35:51,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:51,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40716332] [2021-10-29 05:35:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:51,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:51,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:51,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40716332] [2021-10-29 05:35:51,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40716332] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:35:51,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:35:51,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:35:51,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664799439] [2021-10-29 05:35:51,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:35:51,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:35:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:35:51,339 INFO L87 Difference]: Start difference. First operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:51,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:51,394 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-29 05:35:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:35:51,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-10-29 05:35:51,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:51,407 INFO L225 Difference]: With dead ends: 16 [2021-10-29 05:35:51,408 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 05:35:51,411 INFO L786 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 [2021-10-29 05:35:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 05:35:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-29 05:35:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-29 05:35:51,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-10-29 05:35:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:51,468 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-29 05:35:51,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:51,469 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-29 05:35:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:35:51,469 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:51,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:35:51,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:35:51,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:35:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:51,472 INFO L85 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-29 05:35:51,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:51,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178627285] [2021-10-29 05:35:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:51,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:51,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:51,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178627285] [2021-10-29 05:35:51,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178627285] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:35:51,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:35:51,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:35:51,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773337429] [2021-10-29 05:35:51,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:35:51,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:35:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:35:51,553 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. 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) [2021-10-29 05:35:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:51,618 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-29 05:35:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:35:51,619 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 [2021-10-29 05:35:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:51,621 INFO L225 Difference]: With dead ends: 17 [2021-10-29 05:35:51,621 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:35:51,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:35:51,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:35:51,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-29 05:35:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-29 05:35:51,628 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2021-10-29 05:35:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:51,629 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-29 05:35:51,629 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) [2021-10-29 05:35:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-29 05:35:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:35:51,630 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:51,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:35:51,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:35:51,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:35:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:51,633 INFO L85 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-29 05:35:51,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:51,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636235399] [2021-10-29 05:35:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:51,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:51,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:51,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636235399] [2021-10-29 05:35:51,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636235399] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:35:51,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:35:51,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:35:51,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57940678] [2021-10-29 05:35:51,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:35:51,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:51,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:35:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:35:51,683 INFO L87 Difference]: Start difference. First operand 14 states and 14 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) [2021-10-29 05:35:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:51,700 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-29 05:35:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:35:51,701 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 [2021-10-29 05:35:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:51,702 INFO L225 Difference]: With dead ends: 14 [2021-10-29 05:35:51,702 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 05:35:51,703 INFO L786 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 [2021-10-29 05:35:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 05:35:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-29 05:35:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-29 05:35:51,708 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-10-29 05:35:51,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:51,708 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-29 05:35:51,709 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) [2021-10-29 05:35:51,709 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-29 05:35:51,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:35:51,710 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:51,710 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-29 05:35:51,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:35:51,711 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:35:51,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2021-10-29 05:35:51,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:51,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115200783] [2021-10-29 05:35:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:51,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:51,793 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:51,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115200783] [2021-10-29 05:35:51,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115200783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:35:51,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819064864] [2021-10-29 05:35:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:51,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:35:51,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:35:51,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:35:51,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:35:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:51,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:35:51,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:35:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:52,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:35:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:52,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819064864] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-29 05:35:52,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:35:52,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2021-10-29 05:35:52,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512812052] [2021-10-29 05:35:52,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:35:52,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:52,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:35:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:35:52,326 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:52,412 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-29 05:35:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:35:52,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:35:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:52,414 INFO L225 Difference]: With dead ends: 14 [2021-10-29 05:35:52,415 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 05:35:52,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:35:52,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 05:35:52,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-29 05:35:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-29 05:35:52,421 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-10-29 05:35:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:52,421 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-29 05:35:52,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:52,422 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-29 05:35:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:35:52,423 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:52,423 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-29 05:35:52,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-29 05:35:52,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:35:52,637 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:35:52,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2021-10-29 05:35:52,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:52,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53870635] [2021-10-29 05:35:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:52,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:52,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:52,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53870635] [2021-10-29 05:35:52,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53870635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:35:52,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221901858] [2021-10-29 05:35:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:52,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:35:52,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:35:52,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:35:52,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:35:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:52,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:35:52,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:35:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:52,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:35:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:53,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221901858] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:35:53,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1590462345] [2021-10-29 05:35:53,104 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 05:35:53,104 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:35:53,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:35:53,134 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:35:53,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:35:53,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:53,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:35:53,243 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 05:35:53,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:35:53,260 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 05:35:53,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:35:53,277 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-10-29 05:35:53,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:35:53,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,420 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.8 percent of original size [2021-10-29 05:35:53,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-29 05:35:53,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:53,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-29 05:35:53,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,560 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:35:53,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:35:53,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:53,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:35:53,589 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:35:53,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:35:53,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:53,727 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:35:53,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1590462345] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:35:53,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:35:53,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 11 [2021-10-29 05:35:53,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771056515] [2021-10-29 05:35:53,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:35:53,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:53,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:35:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:35:53,951 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-10-29 05:35:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:54,137 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-29 05:35:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:35:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 9 [2021-10-29 05:35:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:54,139 INFO L225 Difference]: With dead ends: 12 [2021-10-29 05:35:54,139 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 05:35:54,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:35:54,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 05:35:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 05:35:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-10-29 05:35:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-29 05:35:54,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-10-29 05:35:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:54,148 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-29 05:35:54,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-10-29 05:35:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-29 05:35:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:35:54,149 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:54,149 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-29 05:35:54,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:35:54,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:35:54,371 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:35:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2021-10-29 05:35:54,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:54,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360699575] [2021-10-29 05:35:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:54,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:54,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:54,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360699575] [2021-10-29 05:35:54,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360699575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:35:54,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669038024] [2021-10-29 05:35:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:54,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:35:54,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:35:54,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:35:54,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:35:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:54,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:35:54,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:35:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:54,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:35:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:54,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669038024] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:35:54,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853678055] [2021-10-29 05:35:54,616 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 05:35:54,617 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:35:54,618 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:35:54,619 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:35:54,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:35:54,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:54,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:35:54,643 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 05:35:54,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:35:54,655 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 05:35:54,666 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-29 05:35:54,672 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-29 05:35:54,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:35:54,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,701 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-29 05:35:54,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 05:35:54,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:54,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-29 05:35:54,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,759 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:35:54,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:35:54,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:54,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:35:54,771 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:35:54,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:35:54,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:54,819 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:35:55,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:35:55,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:35:55,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-10-29 05:35:55,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703589802] [2021-10-29 05:35:55,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:35:55,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:35:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:35:55,014 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2021-10-29 05:35:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:55,083 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-29 05:35:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:35:55,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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) Word has length 10 [2021-10-29 05:35:55,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:55,088 INFO L225 Difference]: With dead ends: 27 [2021-10-29 05:35:55,089 INFO L226 Difference]: Without dead ends: 26 [2021-10-29 05:35:55,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:35:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-29 05:35:55,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-29 05:35:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-29 05:35:55,103 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2021-10-29 05:35:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:55,104 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-29 05:35:55,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2021-10-29 05:35:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-29 05:35:55,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:35:55,107 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:55,107 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-10-29 05:35:55,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:35:55,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:35:55,323 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:35:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2021-10-29 05:35:55,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:55,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983550565] [2021-10-29 05:35:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:55,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:55,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:55,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983550565] [2021-10-29 05:35:55,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983550565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:35:55,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577609832] [2021-10-29 05:35:55,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:35:55,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:35:55,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:35:55,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:35:55,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 05:35:55,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-29 05:35:55,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:35:55,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:35:55,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:35:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:55,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:35:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:55,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577609832] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:35:55,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1756226155] [2021-10-29 05:35:55,764 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 05:35:55,764 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:35:55,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:35:55,765 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:35:55,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:35:55,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:55,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:35:55,785 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 05:35:55,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:35:55,791 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 05:35:55,794 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-29 05:35:55,797 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-29 05:35:55,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:35:55,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,833 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-29 05:35:55,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 05:35:55,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:55,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-29 05:35:55,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,891 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:35:55,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:35:55,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:55,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:35:55,907 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:35:55,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:35:55,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:55,956 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:35:56,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:35:56,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:35:56,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-10-29 05:35:56,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583173222] [2021-10-29 05:35:56,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:35:56,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:56,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:35:56,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-29 05:35:56,199 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:56,295 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2021-10-29 05:35:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:35:56,295 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-29 05:35:56,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:56,297 INFO L225 Difference]: With dead ends: 57 [2021-10-29 05:35:56,297 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 05:35:56,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-29 05:35:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 05:35:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-29 05:35:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-10-29 05:35:56,310 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 25 [2021-10-29 05:35:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:56,311 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-10-29 05:35:56,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-10-29 05:35:56,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-29 05:35:56,314 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:56,314 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2021-10-29 05:35:56,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:35:56,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-29 05:35:56,527 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:35:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:56,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 3 times [2021-10-29 05:35:56,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:56,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412819961] [2021-10-29 05:35:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:56,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:56,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:56,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412819961] [2021-10-29 05:35:56,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412819961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:35:56,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692859244] [2021-10-29 05:35:56,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 05:35:56,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:35:56,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:35:56,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:35:56,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:35:56,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 05:35:56,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:35:56,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:35:56,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:35:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:57,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:35:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:57,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692859244] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:35:57,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920403572] [2021-10-29 05:35:57,645 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 05:35:57,645 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:35:57,645 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:35:57,645 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:35:57,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:35:57,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:57,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:35:57,658 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 05:35:57,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:35:57,664 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 05:35:57,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:35:57,670 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-10-29 05:35:57,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:35:57,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,694 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.8 percent of original size [2021-10-29 05:35:57,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-29 05:35:57,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:57,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-29 05:35:57,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,739 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:35:57,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:35:57,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:35:57,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:35:57,753 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:35:57,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:35:57,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:35:57,793 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:35:58,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:35:58,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:35:58,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-10-29 05:35:58,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437798378] [2021-10-29 05:35:58,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-29 05:35:58,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:35:58,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-29 05:35:58,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2021-10-29 05:35:58,210 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 24 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:35:58,435 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2021-10-29 05:35:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 05:35:58,436 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-29 05:35:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:35:58,438 INFO L225 Difference]: With dead ends: 117 [2021-10-29 05:35:58,438 INFO L226 Difference]: Without dead ends: 116 [2021-10-29 05:35:58,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 136 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2021-10-29 05:35:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-29 05:35:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-29 05:35:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.008695652173913) internal successors, (116), 115 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2021-10-29 05:35:58,479 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 55 [2021-10-29 05:35:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:35:58,480 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2021-10-29 05:35:58,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:35:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2021-10-29 05:35:58,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-29 05:35:58,487 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:35:58,487 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2021-10-29 05:35:58,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:35:58,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-29 05:35:58,711 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:35:58,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:35:58,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 4 times [2021-10-29 05:35:58,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:35:58,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502789602] [2021-10-29 05:35:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:35:58,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:35:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:59,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:35:59,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502789602] [2021-10-29 05:35:59,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502789602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:35:59,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020799166] [2021-10-29 05:35:59,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 05:35:59,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:35:59,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:35:59,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:35:59,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 05:35:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:35:59,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 05:35:59,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:35:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:35:59,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:36:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:36:01,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020799166] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:36:01,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [569350107] [2021-10-29 05:36:01,193 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 05:36:01,193 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:36:01,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:36:01,194 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:36:01,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:36:01,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:36:01,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:36:01,216 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 05:36:01,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:36:01,222 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 05:36:01,224 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-29 05:36:01,227 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-29 05:36:01,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:36:01,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,243 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-29 05:36:01,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 05:36:01,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:36:01,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-29 05:36:01,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,274 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:36:01,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:36:01,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:36:01,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:36:01,289 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:36:01,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:36:01,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:01,324 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:36:02,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:36:02,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:36:02,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-10-29 05:36:02,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259589032] [2021-10-29 05:36:02,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-29 05:36:02,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:36:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-29 05:36:02,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=1614, Unknown=0, NotChecked=0, Total=2756 [2021-10-29 05:36:02,200 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 48 states, 47 states have (on average 4.8936170212765955) internal successors, (230), 47 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:36:02,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:36:02,575 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2021-10-29 05:36:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-29 05:36:02,576 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.8936170212765955) internal successors, (230), 47 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-10-29 05:36:02,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:36:02,584 INFO L225 Difference]: With dead ends: 237 [2021-10-29 05:36:02,585 INFO L226 Difference]: Without dead ends: 236 [2021-10-29 05:36:02,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 292 SyntacticMatches, 23 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1142, Invalid=1614, Unknown=0, NotChecked=0, Total=2756 [2021-10-29 05:36:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-29 05:36:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-10-29 05:36:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.004255319148936) internal successors, (236), 235 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:36:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2021-10-29 05:36:02,635 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 115 [2021-10-29 05:36:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:36:02,637 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2021-10-29 05:36:02,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.8936170212765955) internal successors, (230), 47 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:36:02,638 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2021-10-29 05:36:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-10-29 05:36:02,654 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:36:02,655 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1] [2021-10-29 05:36:02,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:36:02,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-10-29 05:36:02,874 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 05:36:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:36:02,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1923709923, now seen corresponding path program 5 times [2021-10-29 05:36:02,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:36:02,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176708467] [2021-10-29 05:36:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:36:02,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:36:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:36:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:36:04,570 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:36:04,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176708467] [2021-10-29 05:36:04,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176708467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:36:04,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360529047] [2021-10-29 05:36:04,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:36:04,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:36:04,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:36:04,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:36:04,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 05:36:04,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-29 05:36:04,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:36:04,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:36:04,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:36:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 737 proven. 21 refuted. 0 times theorem prover too weak. 4601 trivial. 0 not checked. [2021-10-29 05:36:05,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:36:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 737 proven. 21 refuted. 0 times theorem prover too weak. 4601 trivial. 0 not checked. [2021-10-29 05:36:06,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360529047] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:36:06,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [733775947] [2021-10-29 05:36:06,903 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 05:36:06,903 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:36:06,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:36:06,904 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:36:06,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:36:06,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:36:06,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:36:06,914 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 05:36:06,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:36:06,919 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 05:36:06,921 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-29 05:36:06,923 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-29 05:36:06,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 05:36:06,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,937 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-29 05:36:06,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 05:36:06,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:36:06,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-29 05:36:06,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,976 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:36:06,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:36:06,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:36:06,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:36:06,986 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 05:36:06,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:36:06,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:06,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:07,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:07,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:07,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:07,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:07,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:07,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:07,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:07,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:07,024 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:36:10,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:36:10,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:36:10,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 8, 8] total 62 [2021-10-29 05:36:10,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983935563] [2021-10-29 05:36:10,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-29 05:36:10,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:36:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-29 05:36:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1557, Invalid=2999, Unknown=0, NotChecked=0, Total=4556 [2021-10-29 05:36:10,576 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand has 63 states, 62 states have (on average 4.467741935483871) internal successors, (277), 63 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:36:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:36:19,091 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2021-10-29 05:36:19,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-10-29 05:36:19,092 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 4.467741935483871) internal successors, (277), 63 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-10-29 05:36:19,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:36:19,093 INFO L225 Difference]: With dead ends: 243 [2021-10-29 05:36:19,094 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:36:19,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 637 SyntacticMatches, 47 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16599 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=12643, Invalid=32089, Unknown=0, NotChecked=0, Total=44732 [2021-10-29 05:36:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:36:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:36:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:36:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:36:19,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 235 [2021-10-29 05:36:19,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:36:19,120 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:36:19,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 4.467741935483871) internal successors, (277), 63 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:36:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:36:19,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:36:19,124 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:36:19,125 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:36:19,125 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:36:19,126 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:36:19,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:36:19,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2021-10-29 05:36:19,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:36:19,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:36:19,800 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-29 05:36:19,800 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:36:19,800 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-29 05:36:19,800 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-29 05:36:19,800 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-29 05:36:19,801 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-29 05:36:19,801 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-29 05:36:19,801 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:36:19,801 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-29 05:36:19,801 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-29 05:36:19,801 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483648) 2) 1)) (<= ULTIMATE.start_main_~y~0 2147483646) (or (<= 2 ULTIMATE.start_main_~y~0) (and (= ULTIMATE.start_main_~y~0 1) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)))) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-10-29 05:36:19,806 INFO L731 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2021-10-29 05:36:19,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:36:19,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:36:19 BoogieIcfgContainer [2021-10-29 05:36:19,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:36:19,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:36:19,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:36:19,837 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:36:19,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:35:50" (3/4) ... [2021-10-29 05:36:19,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:36:19,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 05:36:19,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-29 05:36:19,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:36:19,903 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:36:19,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:36:19,905 INFO L168 Benchmark]: Toolchain (without parser) took 29843.73 ms. Allocated memory was 98.6 MB in the beginning and 197.1 MB in the end (delta: 98.6 MB). Free memory was 66.6 MB in the beginning and 93.3 MB in the end (delta: -26.7 MB). Peak memory consumption was 71.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:19,907 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 98.6 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:36:19,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.85 ms. Allocated memory is still 98.6 MB. Free memory was 66.3 MB in the beginning and 76.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:19,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.24 ms. Allocated memory is still 98.6 MB. Free memory was 76.3 MB in the beginning and 75.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:36:19,913 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 74.3 MB in the end (delta: 721.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:19,914 INFO L168 Benchmark]: RCFGBuilder took 415.77 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 65.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:19,914 INFO L168 Benchmark]: TraceAbstraction took 28943.62 ms. Allocated memory was 98.6 MB in the beginning and 197.1 MB in the end (delta: 98.6 MB). Free memory was 65.1 MB in the beginning and 95.4 MB in the end (delta: -30.3 MB). Peak memory consumption was 70.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:19,915 INFO L168 Benchmark]: Witness Printer took 67.15 ms. Allocated memory is still 197.1 MB. Free memory was 95.4 MB in the beginning and 93.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:19,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 98.6 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.85 ms. Allocated memory is still 98.6 MB. Free memory was 66.3 MB in the beginning and 76.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.24 ms. Allocated memory is still 98.6 MB. Free memory was 76.3 MB in the beginning and 75.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 74.3 MB in the end (delta: 721.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 415.77 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 65.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28943.62 ms. Allocated memory was 98.6 MB in the beginning and 197.1 MB in the end (delta: 98.6 MB). Free memory was 65.1 MB in the beginning and 95.4 MB in the end (delta: -30.3 MB). Peak memory consumption was 70.5 MB. Max. memory is 16.1 GB. * Witness Printer took 67.15 ms. Allocated memory is still 197.1 MB. Free memory was 95.4 MB in the beginning and 93.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 28.8s, OverallIterations: 10, TraceHistogramMax: 47, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 461 SDslu, 83 SDs, 0 SdLazy, 701 SolverSat, 318 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 1164 SyntacticMatches, 91 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19286 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=9, InterpolantAutomatonStates: 260, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 49 NumberOfFragments, 31 HoareAnnotationTreeSize, 1 FomulaSimplifications, 191 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 2057 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 927 NumberOfCodeBlocks, 717 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1360 ConstructedInterpolants, 0 QuantifiedInterpolants, 3366 SizeOfPredicates, 3 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 10678/20766 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 623, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 24, TOOLS_POST_TIME[ms]: 174, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 24, TOOLS_QUANTIFIERELIM_TIME[ms]: 163, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 40, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 39, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME[ms]: 124, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 193, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 19, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 14, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 335, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 335, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 30, DAG_COMPRESSION_PROCESSED_NODES: 77, DAG_COMPRESSION_RETAINED_NODES: 27, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((y <= (x * -1 + 2147483648) / 2 + 1 && y <= 2147483646) && (2 <= y || (y == 1 && 0 <= x + 2147483648))) && x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:36:20,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4af4c0e-7f1e-479a-a7dd-d7b22d04acc2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...