./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3777e2ab1819fd82e3658352e2b99c7da6626d046ae65288a9623558224827f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:43:41,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:43:41,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:43:41,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:43:41,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:43:41,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:43:41,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:43:41,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:43:41,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:43:41,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:43:41,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:43:41,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:43:41,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:43:41,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:43:41,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:43:41,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:43:41,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:43:41,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:43:41,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:43:41,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:43:41,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:43:41,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:43:41,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:43:41,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:43:41,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:43:41,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:43:41,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:43:41,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:43:41,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:43:41,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:43:41,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:43:41,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:43:41,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:43:41,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:43:41,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:43:41,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:43:41,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:43:41,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:43:41,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:43:41,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:43:41,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:43:41,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 19:43:41,330 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:43:41,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:43:41,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:43:41,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:43:41,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:43:41,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:43:41,339 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:43:41,339 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:43:41,339 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:43:41,339 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:43:41,341 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:43:41,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:43:41,341 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:43:41,341 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:43:41,342 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:43:41,342 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:43:41,342 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:43:41,342 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:43:41,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:43:41,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:43:41,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:43:41,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:43:41,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:43:41,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:43:41,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:43:41,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:43:41,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:43:41,348 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 19:43:41,348 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:43:41,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:43:41,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:43:41,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:43:41,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:43:41,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:43:41,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:43:41,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:43:41,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:43:41,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:43:41,351 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:43:41,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:43:41,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:43:41,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:43:41,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:43:41,352 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_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3777e2ab1819fd82e3658352e2b99c7da6626d046ae65288a9623558224827f [2021-11-25 19:43:41,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:43:41,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:43:41,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:43:41,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:43:41,673 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:43:41,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-11-25 19:43:41,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/data/85ef1f32f/c79e829a6d9640a3bd4b98951b31a716/FLAGd973cdd2f [2021-11-25 19:43:42,260 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:43:42,261 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c [2021-11-25 19:43:42,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/data/85ef1f32f/c79e829a6d9640a3bd4b98951b31a716/FLAGd973cdd2f [2021-11-25 19:43:42,604 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/data/85ef1f32f/c79e829a6d9640a3bd4b98951b31a716 [2021-11-25 19:43:42,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:43:42,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:43:42,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:43:42,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:43:42,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:43:42,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:43:42" (1/1) ... [2021-11-25 19:43:42,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2baf33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:42, skipping insertion in model container [2021-11-25 19:43:42,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:43:42" (1/1) ... [2021-11-25 19:43:42,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:43:42,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:43:42,961 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44949,44962] [2021-11-25 19:43:42,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:43:42,988 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:43:43,081 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/sv-benchmarks/c/bitvector/s3_srvr_1a.BV.c.cil.c[44949,44962] [2021-11-25 19:43:43,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:43:43,110 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:43:43,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43 WrapperNode [2021-11-25 19:43:43,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:43:43,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:43:43,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:43:43,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:43:43,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,203 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 525 [2021-11-25 19:43:43,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:43:43,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:43:43,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:43:43,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:43:43,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:43:43,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:43:43,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:43:43,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:43:43,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (1/1) ... [2021-11-25 19:43:43,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:43:43,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:43:43,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:43:43,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:43:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:43:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:43:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:43:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:43:43,424 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:43:43,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:43:43,442 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 19:43:43,990 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-25 19:43:43,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-25 19:43:43,991 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:43:44,155 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:43:44,155 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:43:44,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:43:44 BoogieIcfgContainer [2021-11-25 19:43:44,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:43:44,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:43:44,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:43:44,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:43:44,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:43:42" (1/3) ... [2021-11-25 19:43:44,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9a9433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:43:44, skipping insertion in model container [2021-11-25 19:43:44,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:43:43" (2/3) ... [2021-11-25 19:43:44,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9a9433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:43:44, skipping insertion in model container [2021-11-25 19:43:44,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:43:44" (3/3) ... [2021-11-25 19:43:44,173 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.BV.c.cil.c [2021-11-25 19:43:44,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:43:44,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 19:43:44,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:43:44,235 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:43:44,235 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 19:43:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 107 states have (on average 1.7757009345794392) internal successors, (190), 111 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:43:44,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:44,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:44,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:44,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:44,277 INFO L85 PathProgramCache]: Analyzing trace with hash 44407325, now seen corresponding path program 1 times [2021-11-25 19:43:44,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:44,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438488954] [2021-11-25 19:43:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:44,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:43:44,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:44,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438488954] [2021-11-25 19:43:44,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438488954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:44,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:44,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:43:44,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385240165] [2021-11-25 19:43:44,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:44,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:44,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:44,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:44,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:44,577 INFO L87 Difference]: Start difference. First operand has 112 states, 107 states have (on average 1.7757009345794392) internal successors, (190), 111 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:44,855 INFO L93 Difference]: Finished difference Result 243 states and 412 transitions. [2021-11-25 19:43:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:44,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 19:43:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:44,873 INFO L225 Difference]: With dead ends: 243 [2021-11-25 19:43:44,873 INFO L226 Difference]: Without dead ends: 126 [2021-11-25 19:43:44,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:44,882 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 27 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:44,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 249 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:43:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-25 19:43:44,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2021-11-25 19:43:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 120 states have (on average 1.4916666666666667) internal successors, (179), 123 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 179 transitions. [2021-11-25 19:43:44,975 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 179 transitions. Word has length 11 [2021-11-25 19:43:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:44,976 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 179 transitions. [2021-11-25 19:43:44,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 179 transitions. [2021-11-25 19:43:44,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:43:44,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:44,981 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:44,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:43:44,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1516539176, now seen corresponding path program 1 times [2021-11-25 19:43:44,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:44,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285127147] [2021-11-25 19:43:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:44,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:43:45,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285127147] [2021-11-25 19:43:45,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285127147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:45,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:45,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:43:45,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106585422] [2021-11-25 19:43:45,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:45,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:45,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:45,123 INFO L87 Difference]: Start difference. First operand 124 states and 179 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:45,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:45,356 INFO L93 Difference]: Finished difference Result 297 states and 445 transitions. [2021-11-25 19:43:45,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:45,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2021-11-25 19:43:45,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:45,363 INFO L225 Difference]: With dead ends: 297 [2021-11-25 19:43:45,364 INFO L226 Difference]: Without dead ends: 163 [2021-11-25 19:43:45,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:45,372 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 67 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:45,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 154 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:43:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-25 19:43:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2021-11-25 19:43:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 156 states have (on average 1.4615384615384615) internal successors, (228), 159 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 228 transitions. [2021-11-25 19:43:45,394 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 228 transitions. Word has length 25 [2021-11-25 19:43:45,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:45,401 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 228 transitions. [2021-11-25 19:43:45,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 228 transitions. [2021-11-25 19:43:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:43:45,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:45,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:45,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:43:45,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash 585811026, now seen corresponding path program 1 times [2021-11-25 19:43:45,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:45,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129571865] [2021-11-25 19:43:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:45,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:43:45,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:45,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129571865] [2021-11-25 19:43:45,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129571865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:45,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:45,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:43:45,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982285945] [2021-11-25 19:43:45,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:45,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:45,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:45,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:45,503 INFO L87 Difference]: Start difference. First operand 160 states and 228 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:45,697 INFO L93 Difference]: Finished difference Result 389 states and 573 transitions. [2021-11-25 19:43:45,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:45,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-25 19:43:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:45,700 INFO L225 Difference]: With dead ends: 389 [2021-11-25 19:43:45,701 INFO L226 Difference]: Without dead ends: 221 [2021-11-25 19:43:45,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:45,714 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 114 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:45,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 116 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:43:45,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-25 19:43:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 208. [2021-11-25 19:43:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.446078431372549) internal successors, (295), 207 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 295 transitions. [2021-11-25 19:43:45,744 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 295 transitions. Word has length 28 [2021-11-25 19:43:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:45,745 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 295 transitions. [2021-11-25 19:43:45,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 295 transitions. [2021-11-25 19:43:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 19:43:45,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:45,748 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:45,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:43:45,749 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1232252660, now seen corresponding path program 1 times [2021-11-25 19:43:45,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:45,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087732863] [2021-11-25 19:43:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:45,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:43:45,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:45,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087732863] [2021-11-25 19:43:45,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087732863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:45,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:45,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:43:45,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007278916] [2021-11-25 19:43:45,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:45,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:45,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:45,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:45,849 INFO L87 Difference]: Start difference. First operand 208 states and 295 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:46,038 INFO L93 Difference]: Finished difference Result 488 states and 714 transitions. [2021-11-25 19:43:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:46,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-25 19:43:46,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:46,041 INFO L225 Difference]: With dead ends: 488 [2021-11-25 19:43:46,041 INFO L226 Difference]: Without dead ends: 279 [2021-11-25 19:43:46,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:46,049 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 120 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:46,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 106 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:43:46,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-25 19:43:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2021-11-25 19:43:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 271 states have (on average 1.4944649446494465) internal successors, (405), 274 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 405 transitions. [2021-11-25 19:43:46,092 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 405 transitions. Word has length 42 [2021-11-25 19:43:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:46,092 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 405 transitions. [2021-11-25 19:43:46,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 405 transitions. [2021-11-25 19:43:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 19:43:46,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:46,096 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:46,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:43:46,096 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:46,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:46,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1907067414, now seen corresponding path program 1 times [2021-11-25 19:43:46,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:46,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039420779] [2021-11-25 19:43:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:46,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:43:46,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:46,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039420779] [2021-11-25 19:43:46,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039420779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:46,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:46,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:43:46,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723379439] [2021-11-25 19:43:46,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:46,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:46,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:46,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:46,159 INFO L87 Difference]: Start difference. First operand 275 states and 405 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:46,328 INFO L93 Difference]: Finished difference Result 599 states and 890 transitions. [2021-11-25 19:43:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-25 19:43:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:46,332 INFO L225 Difference]: With dead ends: 599 [2021-11-25 19:43:46,332 INFO L226 Difference]: Without dead ends: 326 [2021-11-25 19:43:46,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:46,334 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 130 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:46,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 102 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:43:46,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-25 19:43:46,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2021-11-25 19:43:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 283 states have (on average 1.4840989399293287) internal successors, (420), 286 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 420 transitions. [2021-11-25 19:43:46,348 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 420 transitions. Word has length 70 [2021-11-25 19:43:46,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:46,349 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 420 transitions. [2021-11-25 19:43:46,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,349 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 420 transitions. [2021-11-25 19:43:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 19:43:46,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:46,354 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:46,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:43:46,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:46,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash -961291751, now seen corresponding path program 1 times [2021-11-25 19:43:46,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:46,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804070995] [2021-11-25 19:43:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:46,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:43:46,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:46,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804070995] [2021-11-25 19:43:46,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804070995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:46,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:46,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:43:46,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074740716] [2021-11-25 19:43:46,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:46,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:43:46,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:46,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:43:46,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:43:46,427 INFO L87 Difference]: Start difference. First operand 287 states and 420 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:46,648 INFO L93 Difference]: Finished difference Result 626 states and 925 transitions. [2021-11-25 19:43:46,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:43:46,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-25 19:43:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:46,652 INFO L225 Difference]: With dead ends: 626 [2021-11-25 19:43:46,652 INFO L226 Difference]: Without dead ends: 341 [2021-11-25 19:43:46,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:43:46,654 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 77 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:46,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 243 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:43:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-25 19:43:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 332. [2021-11-25 19:43:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 328 states have (on average 1.399390243902439) internal successors, (459), 331 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 459 transitions. [2021-11-25 19:43:46,668 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 459 transitions. Word has length 79 [2021-11-25 19:43:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:46,669 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 459 transitions. [2021-11-25 19:43:46,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 459 transitions. [2021-11-25 19:43:46,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 19:43:46,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:46,671 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:46,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:43:46,672 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)] === [2021-11-25 19:43:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1948707583, now seen corresponding path program 1 times [2021-11-25 19:43:46,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:46,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002039197] [2021-11-25 19:43:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:46,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:43:46,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:46,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002039197] [2021-11-25 19:43:46,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002039197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:46,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:46,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:43:46,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224875531] [2021-11-25 19:43:46,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:46,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:46,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:46,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:46,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:46,753 INFO L87 Difference]: Start difference. First operand 332 states and 459 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:46,922 INFO L93 Difference]: Finished difference Result 671 states and 928 transitions. [2021-11-25 19:43:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:46,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 19:43:46,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:46,926 INFO L225 Difference]: With dead ends: 671 [2021-11-25 19:43:46,926 INFO L226 Difference]: Without dead ends: 340 [2021-11-25 19:43:46,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:46,928 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 125 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:46,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 102 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:43:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-25 19:43:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 335. [2021-11-25 19:43:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 331 states have (on average 1.392749244712991) internal successors, (461), 334 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 461 transitions. [2021-11-25 19:43:46,946 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 461 transitions. Word has length 80 [2021-11-25 19:43:46,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:46,947 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 461 transitions. [2021-11-25 19:43:46,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 461 transitions. [2021-11-25 19:43:46,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 19:43:46,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:46,951 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:46,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:43:46,952 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:46,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1329185286, now seen corresponding path program 1 times [2021-11-25 19:43:46,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:46,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623684033] [2021-11-25 19:43:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:46,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:43:47,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:47,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623684033] [2021-11-25 19:43:47,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623684033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:47,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:47,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:43:47,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99659639] [2021-11-25 19:43:47,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:47,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:47,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:47,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:47,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:47,038 INFO L87 Difference]: Start difference. First operand 335 states and 461 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:47,177 INFO L93 Difference]: Finished difference Result 701 states and 967 transitions. [2021-11-25 19:43:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:47,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 98 [2021-11-25 19:43:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:47,180 INFO L225 Difference]: With dead ends: 701 [2021-11-25 19:43:47,180 INFO L226 Difference]: Without dead ends: 368 [2021-11-25 19:43:47,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:47,182 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 22 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:47,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 212 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:43:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-11-25 19:43:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 358. [2021-11-25 19:43:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 354 states have (on average 1.3757062146892656) internal successors, (487), 357 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 487 transitions. [2021-11-25 19:43:47,198 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 487 transitions. Word has length 98 [2021-11-25 19:43:47,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:47,199 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 487 transitions. [2021-11-25 19:43:47,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:47,199 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 487 transitions. [2021-11-25 19:43:47,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-25 19:43:47,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:47,201 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:47,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:43:47,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash 542871737, now seen corresponding path program 1 times [2021-11-25 19:43:47,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:47,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091500057] [2021-11-25 19:43:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:47,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 19:43:47,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:47,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091500057] [2021-11-25 19:43:47,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091500057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:47,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:47,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:43:47,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302471612] [2021-11-25 19:43:47,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:47,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:47,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:47,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:47,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:47,259 INFO L87 Difference]: Start difference. First operand 358 states and 487 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:47,393 INFO L93 Difference]: Finished difference Result 746 states and 1019 transitions. [2021-11-25 19:43:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:47,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 122 [2021-11-25 19:43:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:47,397 INFO L225 Difference]: With dead ends: 746 [2021-11-25 19:43:47,397 INFO L226 Difference]: Without dead ends: 390 [2021-11-25 19:43:47,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:47,398 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 15 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:47,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 212 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:43:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-25 19:43:47,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 383. [2021-11-25 19:43:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 379 states have (on average 1.358839050131926) internal successors, (515), 382 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 515 transitions. [2021-11-25 19:43:47,413 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 515 transitions. Word has length 122 [2021-11-25 19:43:47,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:47,413 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 515 transitions. [2021-11-25 19:43:47,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 515 transitions. [2021-11-25 19:43:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 19:43:47,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:47,415 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:47,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:43:47,416 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:47,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:47,416 INFO L85 PathProgramCache]: Analyzing trace with hash -9132918, now seen corresponding path program 1 times [2021-11-25 19:43:47,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:47,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984280922] [2021-11-25 19:43:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:47,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-25 19:43:47,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:47,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984280922] [2021-11-25 19:43:47,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984280922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:47,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:47,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:43:47,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946181094] [2021-11-25 19:43:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:47,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:47,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:47,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:47,468 INFO L87 Difference]: Start difference. First operand 383 states and 515 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:47,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:47,619 INFO L93 Difference]: Finished difference Result 794 states and 1068 transitions. [2021-11-25 19:43:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:47,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 125 [2021-11-25 19:43:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:47,623 INFO L225 Difference]: With dead ends: 794 [2021-11-25 19:43:47,623 INFO L226 Difference]: Without dead ends: 413 [2021-11-25 19:43:47,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:47,625 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 32 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:47,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 217 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:43:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-25 19:43:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 402. [2021-11-25 19:43:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 398 states have (on average 1.349246231155779) internal successors, (537), 401 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 537 transitions. [2021-11-25 19:43:47,639 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 537 transitions. Word has length 125 [2021-11-25 19:43:47,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:47,640 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 537 transitions. [2021-11-25 19:43:47,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:43:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 537 transitions. [2021-11-25 19:43:47,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 19:43:47,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:47,642 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:47,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:43:47,643 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:43:47,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:47,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1010092189, now seen corresponding path program 1 times [2021-11-25 19:43:47,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:47,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882730028] [2021-11-25 19:43:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:47,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-25 19:43:47,699 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:47,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882730028] [2021-11-25 19:43:47,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882730028] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:43:47,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984435633] [2021-11-25 19:43:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:47,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:43:47,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:43:47,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:43:47,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:43:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:47,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:43:47,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:43:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-25 19:43:48,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:43:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-25 19:43:48,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984435633] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:43:48,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [868033537] [2021-11-25 19:43:48,467 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2021-11-25 19:43:48,467 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:43:48,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:43:48,486 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:43:48,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:44:24,875 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:44:47,021 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10970#(and (= |ULTIMATE.start_ssl3_accept_~s__new_session~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~buf~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (not (= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 0)) (= 3 (div |ULTIMATE.start_ssl3_accept_~s__version~0#1| 256)) (<= |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (= 12292 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 1)) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__init_num~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~s__server~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (= |ULTIMATE.start_ssl3_accept_~state~0#1| |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (= 8192 |ULTIMATE.start_ssl3_accept_~s__type~0#1|) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~buf~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483648)) (< 2147483646 |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept_renegotiate~0#1|) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2021-11-25 19:44:47,021 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:44:47,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:44:47,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-25 19:44:47,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437768488] [2021-11-25 19:44:47,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:44:47,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:44:47,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:44:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:44:47,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=2280, Unknown=0, NotChecked=0, Total=2756 [2021-11-25 19:44:47,024 INFO L87 Difference]: Start difference. First operand 402 states and 537 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:44:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:44:47,703 INFO L93 Difference]: Finished difference Result 1695 states and 2294 transitions. [2021-11-25 19:44:47,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:44:47,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 138 [2021-11-25 19:44:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:44:47,711 INFO L225 Difference]: With dead ends: 1695 [2021-11-25 19:44:47,711 INFO L226 Difference]: Without dead ends: 1260 [2021-11-25 19:44:47,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 364 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=501, Invalid=2691, Unknown=0, NotChecked=0, Total=3192 [2021-11-25 19:44:47,715 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 624 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:44:47,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 430 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:44:47,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-11-25 19:44:47,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1096. [2021-11-25 19:44:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1092 states have (on average 1.38003663003663) internal successors, (1507), 1095 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:44:47,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1507 transitions. [2021-11-25 19:44:47,756 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1507 transitions. Word has length 138 [2021-11-25 19:44:47,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:44:47,757 INFO L470 AbstractCegarLoop]: Abstraction has 1096 states and 1507 transitions. [2021-11-25 19:44:47,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:44:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1507 transitions. [2021-11-25 19:44:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 19:44:47,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:47,760 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:47,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:44:47,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 19:44:47,982 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:44:47,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:47,982 INFO L85 PathProgramCache]: Analyzing trace with hash -72110105, now seen corresponding path program 1 times [2021-11-25 19:44:47,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:47,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466516016] [2021-11-25 19:44:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:47,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-25 19:44:48,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:48,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466516016] [2021-11-25 19:44:48,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466516016] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:44:48,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098117513] [2021-11-25 19:44:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:48,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:48,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:48,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:44:48,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:44:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:48,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:44:48,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:44:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-25 19:44:48,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:44:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-25 19:44:48,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098117513] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:44:48,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [723254322] [2021-11-25 19:44:48,473 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2021-11-25 19:44:48,474 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:44:48,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:44:48,474 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:44:48,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:45:18,761 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:45:38,289 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15169#(and (<= |ULTIMATE.start_ssl3_accept_~buf~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (not (= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 0)) (= 3 (div |ULTIMATE.start_ssl3_accept_~s__version~0#1| 256)) (<= |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 1)) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__init_num~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~s__server~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (not (= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (= 8192 |ULTIMATE.start_ssl3_accept_~s__type~0#1|) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (< 2147483646 |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~buf~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2021-11-25 19:45:38,290 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:45:38,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:45:38,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-25 19:45:38,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329974894] [2021-11-25 19:45:38,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:45:38,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:45:38,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:45:38,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:45:38,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=2492, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:45:38,293 INFO L87 Difference]: Start difference. First operand 1096 states and 1507 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:45:39,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:45:39,037 INFO L93 Difference]: Finished difference Result 2803 states and 3796 transitions. [2021-11-25 19:45:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:45:39,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 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 141 [2021-11-25 19:45:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:45:39,051 INFO L225 Difference]: With dead ends: 2803 [2021-11-25 19:45:39,051 INFO L226 Difference]: Without dead ends: 1709 [2021-11-25 19:45:39,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=503, Invalid=2919, Unknown=0, NotChecked=0, Total=3422 [2021-11-25 19:45:39,056 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 493 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:45:39,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 695 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:45:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2021-11-25 19:45:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1429. [2021-11-25 19:45:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1425 states have (on average 1.3396491228070175) internal successors, (1909), 1428 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:45:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1909 transitions. [2021-11-25 19:45:39,111 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1909 transitions. Word has length 141 [2021-11-25 19:45:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:45:39,112 INFO L470 AbstractCegarLoop]: Abstraction has 1429 states and 1909 transitions. [2021-11-25 19:45:39,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:45:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1909 transitions. [2021-11-25 19:45:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-25 19:45:39,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:45:39,115 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:45:39,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:45:39,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 19:45:39,339 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:45:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:45:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1819213520, now seen corresponding path program 1 times [2021-11-25 19:45:39,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:45:39,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85276774] [2021-11-25 19:45:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:45:39,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:45:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:45:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 102 proven. 68 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:45:39,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:45:39,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85276774] [2021-11-25 19:45:39,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85276774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:45:39,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557523196] [2021-11-25 19:45:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:45:39,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:45:39,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:45:39,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:45:39,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:45:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:45:39,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:45:39,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:45:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 85 proven. 85 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:45:39,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:45:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 97 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-25 19:45:40,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557523196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:45:40,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1938379136] [2021-11-25 19:45:40,057 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-11-25 19:45:40,058 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:45:40,058 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:45:40,059 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:45:40,059 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:45:59,376 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:46:25,737 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21131#(and (<= |ULTIMATE.start_ssl3_accept_~buf~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (not (= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 0)) (= 3 (div |ULTIMATE.start_ssl3_accept_~s__version~0#1| 256)) (<= |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 1)) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__init_num~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~s__server~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (not (= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (= 8192 |ULTIMATE.start_ssl3_accept_~s__type~0#1|) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (< 2147483646 |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~buf~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2021-11-25 19:46:25,738 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:46:25,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:46:25,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 9 [2021-11-25 19:46:25,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46802003] [2021-11-25 19:46:25,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:46:25,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:46:25,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:46:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:46:25,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=3540, Unknown=0, NotChecked=0, Total=4160 [2021-11-25 19:46:25,742 INFO L87 Difference]: Start difference. First operand 1429 states and 1909 transitions. Second operand has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:46:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:46:27,199 INFO L93 Difference]: Finished difference Result 4429 states and 5829 transitions. [2021-11-25 19:46:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 19:46:27,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 0 states have call successors, (0), 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 150 [2021-11-25 19:46:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:46:27,217 INFO L225 Difference]: With dead ends: 4429 [2021-11-25 19:46:27,217 INFO L226 Difference]: Without dead ends: 3002 [2021-11-25 19:46:27,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 390 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=747, Invalid=5259, Unknown=0, NotChecked=0, Total=6006 [2021-11-25 19:46:27,223 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 934 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:46:27,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 1096 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 19:46:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-11-25 19:46:27,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2568. [2021-11-25 19:46:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 2564 states have (on average 1.3053822152886116) internal successors, (3347), 2567 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:46:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3347 transitions. [2021-11-25 19:46:27,319 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3347 transitions. Word has length 150 [2021-11-25 19:46:27,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:27,319 INFO L470 AbstractCegarLoop]: Abstraction has 2568 states and 3347 transitions. [2021-11-25 19:46:27,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:46:27,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3347 transitions. [2021-11-25 19:46:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-25 19:46:27,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:27,322 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:27,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:46:27,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:27,536 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:46:27,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:27,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1665267608, now seen corresponding path program 1 times [2021-11-25 19:46:27,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:46:27,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9577569] [2021-11-25 19:46:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:46:27,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:46:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:46:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-25 19:46:27,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:46:27,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9577569] [2021-11-25 19:46:27,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9577569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:46:27,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:46:27,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:46:27,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682461948] [2021-11-25 19:46:27,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:46:27,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:46:27,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:46:27,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:46:27,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:46:27,608 INFO L87 Difference]: Start difference. First operand 2568 states and 3347 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:46:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:46:27,771 INFO L93 Difference]: Finished difference Result 4896 states and 6355 transitions. [2021-11-25 19:46:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:46:27,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 152 [2021-11-25 19:46:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:46:27,785 INFO L225 Difference]: With dead ends: 4896 [2021-11-25 19:46:27,786 INFO L226 Difference]: Without dead ends: 2330 [2021-11-25 19:46:27,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:46:27,790 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 8 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:46:27,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 201 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:46:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2021-11-25 19:46:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 1667. [2021-11-25 19:46:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1665 states have (on average 1.288888888888889) internal successors, (2146), 1666 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:46:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2146 transitions. [2021-11-25 19:46:27,862 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2146 transitions. Word has length 152 [2021-11-25 19:46:27,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:27,862 INFO L470 AbstractCegarLoop]: Abstraction has 1667 states and 2146 transitions. [2021-11-25 19:46:27,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:46:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2146 transitions. [2021-11-25 19:46:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-25 19:46:27,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:27,865 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:27,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:46:27,866 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:46:27,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:27,866 INFO L85 PathProgramCache]: Analyzing trace with hash -973919328, now seen corresponding path program 1 times [2021-11-25 19:46:27,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:46:27,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181918225] [2021-11-25 19:46:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:46:27,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:46:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:46:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-25 19:46:27,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:46:27,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181918225] [2021-11-25 19:46:27,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181918225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:46:27,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:46:27,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:46:27,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273080809] [2021-11-25 19:46:27,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:46:27,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:46:27,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:46:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:46:27,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:46:27,919 INFO L87 Difference]: Start difference. First operand 1667 states and 2146 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:46:28,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:46:28,062 INFO L93 Difference]: Finished difference Result 3332 states and 4290 transitions. [2021-11-25 19:46:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:46:28,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 183 [2021-11-25 19:46:28,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:46:28,072 INFO L225 Difference]: With dead ends: 3332 [2021-11-25 19:46:28,072 INFO L226 Difference]: Without dead ends: 1667 [2021-11-25 19:46:28,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:46:28,078 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 41 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:46:28,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 176 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:46:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-11-25 19:46:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1661. [2021-11-25 19:46:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.2754671488848703) internal successors, (2116), 1660 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:46:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2116 transitions. [2021-11-25 19:46:28,144 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2116 transitions. Word has length 183 [2021-11-25 19:46:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:46:28,144 INFO L470 AbstractCegarLoop]: Abstraction has 1661 states and 2116 transitions. [2021-11-25 19:46:28,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:46:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2116 transitions. [2021-11-25 19:46:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-25 19:46:28,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:46:28,148 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:46:28,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:46:28,148 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:46:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:46:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1634829200, now seen corresponding path program 1 times [2021-11-25 19:46:28,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:46:28,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914755983] [2021-11-25 19:46:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:46:28,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:46:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:46:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 165 proven. 32 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-25 19:46:28,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:46:28,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914755983] [2021-11-25 19:46:28,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914755983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:46:28,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608864209] [2021-11-25 19:46:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:46:28,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:46:28,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:46:28,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:46:28,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:46:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:46:28,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:46:28,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:46:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 114 proven. 83 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-25 19:46:28,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 165 proven. 32 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-25 19:46:29,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608864209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:46:29,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1197750078] [2021-11-25 19:46:29,201 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2021-11-25 19:46:29,201 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:46:29,202 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:46:29,202 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:46:29,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:47:05,710 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:47:26,660 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '44262#(and (<= |ULTIMATE.start_ssl3_accept_~buf~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (not (= |ULTIMATE.start_ssl3_accept_~s__init_buf___0~0#1| 0)) (= 3 (div |ULTIMATE.start_ssl3_accept_~s__version~0#1| 256)) (<= |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~initial_state#1| 8464) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 1)) (<= |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483648)) (= |ULTIMATE.start_ssl3_accept_~s__init_num~0#1| 0) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_#in~initial_state#1| 8464) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (not (= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (= |ULTIMATE.start_ssl3_accept_~s__server~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__cert~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__info_callback~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= 0 |ULTIMATE.start_ssl3_accept_~got_new_session~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___1~0#1| 2147483648)) (= 8464 |ULTIMATE.start_main_~s~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (= 8464 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (<= 8464 |ULTIMATE.start_ssl3_accept_~initial_state#1|) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (not (= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 0)) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (= 8192 |ULTIMATE.start_ssl3_accept_~s__type~0#1|) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (< 2147483646 |ULTIMATE.start_ssl3_accept_~s__ctx__stats__sess_accept~0#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= 8464 |ULTIMATE.start_ssl3_accept_#in~initial_state#1|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~buf~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___2~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~cb~0#1| 2147483647) (= |#NULL.base| 0) (<= |ULTIMATE.start_ssl3_accept_~s__ctx__info_callback~0#1| 2147483647))' at error location [2021-11-25 19:47:26,660 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:47:26,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:47:26,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-11-25 19:47:26,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229950501] [2021-11-25 19:47:26,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:47:26,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:47:26,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:47:26,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:47:26,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=3525, Unknown=0, NotChecked=0, Total=4160 [2021-11-25 19:47:26,664 INFO L87 Difference]: Start difference. First operand 1661 states and 2116 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:27,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:47:27,037 INFO L93 Difference]: Finished difference Result 2737 states and 3478 transitions. [2021-11-25 19:47:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:47:27,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 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 186 [2021-11-25 19:47:27,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:47:27,043 INFO L225 Difference]: With dead ends: 2737 [2021-11-25 19:47:27,043 INFO L226 Difference]: Without dead ends: 815 [2021-11-25 19:47:27,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 491 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=647, Invalid=3775, Unknown=0, NotChecked=0, Total=4422 [2021-11-25 19:47:27,048 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 229 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:47:27,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 415 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:47:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-11-25 19:47:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 809. [2021-11-25 19:47:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 807 states have (on average 1.2812887236679058) internal successors, (1034), 808 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1034 transitions. [2021-11-25 19:47:27,080 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1034 transitions. Word has length 186 [2021-11-25 19:47:27,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:47:27,080 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1034 transitions. [2021-11-25 19:47:27,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1034 transitions. [2021-11-25 19:47:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-25 19:47:27,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:47:27,084 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:47:27,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:47:27,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 19:47:27,297 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:47:27,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:47:27,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2042210514, now seen corresponding path program 1 times [2021-11-25 19:47:27,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:47:27,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159125331] [2021-11-25 19:47:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:47:27,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:47:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:47:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-25 19:47:27,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:47:27,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159125331] [2021-11-25 19:47:27,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159125331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:47:27,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:47:27,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:47:27,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110004828] [2021-11-25 19:47:27,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:47:27,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:47:27,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:47:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:47:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:47:27,352 INFO L87 Difference]: Start difference. First operand 809 states and 1034 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:27,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:47:27,469 INFO L93 Difference]: Finished difference Result 1718 states and 2186 transitions. [2021-11-25 19:47:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:47:27,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 207 [2021-11-25 19:47:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:47:27,474 INFO L225 Difference]: With dead ends: 1718 [2021-11-25 19:47:27,475 INFO L226 Difference]: Without dead ends: 911 [2021-11-25 19:47:27,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:47:27,477 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 8 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:47:27,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 199 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:47:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-11-25 19:47:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 905. [2021-11-25 19:47:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 903 states have (on average 1.2613510520487266) internal successors, (1139), 904 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1139 transitions. [2021-11-25 19:47:27,509 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1139 transitions. Word has length 207 [2021-11-25 19:47:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:47:27,510 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1139 transitions. [2021-11-25 19:47:27,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:27,510 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1139 transitions. [2021-11-25 19:47:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-25 19:47:27,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:47:27,514 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:47:27,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:47:27,515 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:47:27,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:47:27,516 INFO L85 PathProgramCache]: Analyzing trace with hash -47395171, now seen corresponding path program 1 times [2021-11-25 19:47:27,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:47:27,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445694438] [2021-11-25 19:47:27,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:47:27,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:47:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:47:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2021-11-25 19:47:27,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:47:27,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445694438] [2021-11-25 19:47:27,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445694438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:47:27,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:47:27,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:47:27,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684038914] [2021-11-25 19:47:27,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:47:27,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:47:27,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:47:27,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:47:27,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:47:27,575 INFO L87 Difference]: Start difference. First operand 905 states and 1139 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:27,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:47:27,694 INFO L93 Difference]: Finished difference Result 1829 states and 2312 transitions. [2021-11-25 19:47:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:47:27,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 237 [2021-11-25 19:47:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:47:27,700 INFO L225 Difference]: With dead ends: 1829 [2021-11-25 19:47:27,700 INFO L226 Difference]: Without dead ends: 926 [2021-11-25 19:47:27,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:47:27,702 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 8 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:47:27,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 199 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:47:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-11-25 19:47:27,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 920. [2021-11-25 19:47:27,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.2570806100217864) internal successors, (1154), 919 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1154 transitions. [2021-11-25 19:47:27,739 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1154 transitions. Word has length 237 [2021-11-25 19:47:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:47:27,739 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 1154 transitions. [2021-11-25 19:47:27,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1154 transitions. [2021-11-25 19:47:27,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-25 19:47:27,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:47:27,744 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:47:27,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 19:47:27,744 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:47:27,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:47:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1454680909, now seen corresponding path program 1 times [2021-11-25 19:47:27,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:47:27,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748989673] [2021-11-25 19:47:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:47:27,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:47:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:47:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 341 proven. 56 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2021-11-25 19:47:27,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:47:27,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748989673] [2021-11-25 19:47:27,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748989673] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:47:27,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851232357] [2021-11-25 19:47:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:47:27,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:47:27,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:47:27,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:47:27,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:47:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:47:27,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:47:27,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:47:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2021-11-25 19:47:28,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:47:28,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851232357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:47:28,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:47:28,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 19:47:28,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754770533] [2021-11-25 19:47:28,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:47:28,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:47:28,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:47:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:47:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:47:28,310 INFO L87 Difference]: Start difference. First operand 920 states and 1154 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:28,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:47:28,449 INFO L93 Difference]: Finished difference Result 1841 states and 2309 transitions. [2021-11-25 19:47:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:47:28,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2021-11-25 19:47:28,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:47:28,459 INFO L225 Difference]: With dead ends: 1841 [2021-11-25 19:47:28,459 INFO L226 Difference]: Without dead ends: 923 [2021-11-25 19:47:28,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:47:28,461 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 35 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:47:28,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 199 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:47:28,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-25 19:47:28,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 628. [2021-11-25 19:47:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 626 states have (on average 1.218849840255591) internal successors, (763), 627 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 763 transitions. [2021-11-25 19:47:28,498 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 763 transitions. Word has length 269 [2021-11-25 19:47:28,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:47:28,499 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 763 transitions. [2021-11-25 19:47:28,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:47:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 763 transitions. [2021-11-25 19:47:28,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-25 19:47:28,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:47:28,507 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:47:28,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:47:28,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:47:28,735 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 19:47:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:47:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash 423880523, now seen corresponding path program 1 times [2021-11-25 19:47:28,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:47:28,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391421283] [2021-11-25 19:47:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:47:28,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:47:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:47:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 442 proven. 322 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2021-11-25 19:47:29,008 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:47:29,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391421283] [2021-11-25 19:47:29,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391421283] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:47:29,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190327888] [2021-11-25 19:47:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:47:29,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:47:29,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:47:29,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:47:29,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_538b3a3f-f573-4090-a1b6-b830d48740ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:47:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:47:29,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:47:29,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:47:29,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 407 proven. 40 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2021-11-25 19:47:29,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:47:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 353 proven. 8 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2021-11-25 19:47:30,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190327888] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:47:30,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [148233849] [2021-11-25 19:47:30,208 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2021-11-25 19:47:30,208 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:47:30,209 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:47:30,209 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:47:30,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs