./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i --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_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/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_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/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_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/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 6b9a965f73c3cec90a7bf30e1abcce707e2acf95b41bbd45e0beb5b55c7fe39d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:37:43,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:37:43,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:37:43,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:37:43,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:37:43,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:37:43,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:37:43,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:37:43,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:37:43,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:37:43,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:37:43,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:37:43,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:37:43,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:37:43,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:37:43,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:37:43,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:37:43,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:37:43,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:37:43,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:37:43,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:37:43,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:37:43,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:37:43,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:37:43,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:37:43,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:37:43,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:37:43,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:37:43,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:37:43,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:37:43,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:37:43,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:37:43,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:37:43,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:37:43,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:37:43,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:37:43,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:37:43,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:37:43,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:37:43,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:37:43,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:37:43,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 18:37:43,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:37:43,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:37:43,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:37:43,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:37:43,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:37:43,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:37:43,572 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:37:43,572 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:37:43,572 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:37:43,573 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:37:43,574 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:37:43,574 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:37:43,574 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:37:43,574 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:37:43,575 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:37:43,575 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:37:43,575 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:37:43,575 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:37:43,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:37:43,577 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:37:43,577 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:37:43,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:37:43,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:37:43,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:37:43,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:37:43,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:37:43,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:37:43,580 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:37:43,580 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:37:43,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:37:43,581 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:37:43,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:37:43,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:37:43,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:37:43,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:43,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:37:43,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:37:43,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:37:43,583 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:37:43,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:37:43,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:37:43,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:37:43,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:37:43,584 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_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b9a965f73c3cec90a7bf30e1abcce707e2acf95b41bbd45e0beb5b55c7fe39d [2021-11-25 18:37:43,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:37:43,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:37:43,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:37:43,881 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:37:43,882 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:37:43,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2021-11-25 18:37:43,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/data/d63c12062/1dfc931e1173433aa2e48edd18224316/FLAG9cc09260e [2021-11-25 18:37:44,470 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:37:44,470 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2021-11-25 18:37:44,481 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/data/d63c12062/1dfc931e1173433aa2e48edd18224316/FLAG9cc09260e [2021-11-25 18:37:44,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/data/d63c12062/1dfc931e1173433aa2e48edd18224316 [2021-11-25 18:37:44,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:37:44,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:37:44,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:44,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:37:44,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:37:44,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:44" (1/1) ... [2021-11-25 18:37:44,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35352299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:44, skipping insertion in model container [2021-11-25 18:37:44,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:44" (1/1) ... [2021-11-25 18:37:44,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:37:44,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:37:45,123 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_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2021-11-25 18:37:45,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:45,137 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:37:45,148 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_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2021-11-25 18:37:45,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:45,164 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:37:45,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45 WrapperNode [2021-11-25 18:37:45,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:45,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:45,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:37:45,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:37:45,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,197 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-11-25 18:37:45,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:45,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:37:45,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:37:45,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:37:45,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:37:45,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:37:45,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:37:45,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:37:45,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (1/1) ... [2021-11-25 18:37:45,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:45,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:45,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:37:45,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:37:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:37:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:37:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:37:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:37:45,353 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:37:45,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:37:45,456 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:37:45,480 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:37:45,480 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:37:45,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:37:45 BoogieIcfgContainer [2021-11-25 18:37:45,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:37:45,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:37:45,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:37:45,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:37:45,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:37:44" (1/3) ... [2021-11-25 18:37:45,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ad5980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:37:45, skipping insertion in model container [2021-11-25 18:37:45,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:45" (2/3) ... [2021-11-25 18:37:45,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ad5980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:37:45, skipping insertion in model container [2021-11-25 18:37:45,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:37:45" (3/3) ... [2021-11-25 18:37:45,491 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2021-11-25 18:37:45,497 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:37:45,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-25 18:37:45,543 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:37:45,550 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:37:45,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 18:37:45,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 18:37:45,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:45,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 18:37:45,571 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash 71343, now seen corresponding path program 1 times [2021-11-25 18:37:45,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:45,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624378985] [2021-11-25 18:37:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:45,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:45,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:45,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624378985] [2021-11-25 18:37:45,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624378985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:45,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:45,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:37:45,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538282331] [2021-11-25 18:37:45,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:45,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:37:45,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:37:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:45,772 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:45,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:45,831 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-25 18:37:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:37:45,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-25 18:37:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:45,842 INFO L225 Difference]: With dead ends: 21 [2021-11-25 18:37:45,842 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:37:45,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:45,864 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:45,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:37:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:37:45,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 18:37:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-25 18:37:45,912 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2021-11-25 18:37:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:45,913 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-25 18:37:45,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:45,913 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-25 18:37:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:37:45,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:45,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:37:45,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:37:45,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2211678, now seen corresponding path program 1 times [2021-11-25 18:37:45,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:45,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232794254] [2021-11-25 18:37:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:45,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:45,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:45,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232794254] [2021-11-25 18:37:45,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232794254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:45,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:45,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:37:45,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035219369] [2021-11-25 18:37:45,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:45,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:37:45,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:37:45,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:45,951 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:45,961 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-11-25 18:37:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:37:45,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 18:37:45,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:45,963 INFO L225 Difference]: With dead ends: 14 [2021-11-25 18:37:45,963 INFO L226 Difference]: Without dead ends: 13 [2021-11-25 18:37:45,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:45,966 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:45,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:37:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-25 18:37:45,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-25 18:37:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-25 18:37:45,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-11-25 18:37:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:45,972 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-25 18:37:45,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-25 18:37:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:37:45,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:45,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:37:45,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:37:45,974 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:45,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2125424160, now seen corresponding path program 1 times [2021-11-25 18:37:45,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:45,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783318486] [2021-11-25 18:37:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:45,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:46,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:46,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783318486] [2021-11-25 18:37:46,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783318486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:46,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:46,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:37:46,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601033344] [2021-11-25 18:37:46,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:46,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:37:46,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:46,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:37:46,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:37:46,049 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:46,107 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-11-25 18:37:46,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:37:46,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:37:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:46,109 INFO L225 Difference]: With dead ends: 20 [2021-11-25 18:37:46,109 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 18:37:46,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:37:46,112 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:46,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:37:46,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 18:37:46,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-11-25 18:37:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-25 18:37:46,123 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-11-25 18:37:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:46,124 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-25 18:37:46,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-25 18:37:46,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:37:46,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:46,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:46,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:37:46,125 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:46,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1463639574, now seen corresponding path program 1 times [2021-11-25 18:37:46,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:46,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917125361] [2021-11-25 18:37:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:46,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:46,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:46,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917125361] [2021-11-25 18:37:46,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917125361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:46,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:46,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:37:46,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603868541] [2021-11-25 18:37:46,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:46,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:37:46,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:46,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:37:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:37:46,233 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:46,263 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-11-25 18:37:46,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:37:46,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 18:37:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:46,267 INFO L225 Difference]: With dead ends: 17 [2021-11-25 18:37:46,267 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 18:37:46,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:37:46,272 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:46,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:37:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 18:37:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 18:37:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-25 18:37:46,285 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-11-25 18:37:46,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:46,286 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-25 18:37:46,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-25 18:37:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:37:46,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:46,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:46,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:37:46,289 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:46,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:46,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1871813406, now seen corresponding path program 1 times [2021-11-25 18:37:46,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:46,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856516430] [2021-11-25 18:37:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:46,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:46,354 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:46,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856516430] [2021-11-25 18:37:46,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856516430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:46,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:46,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:37:46,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293463377] [2021-11-25 18:37:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:46,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:37:46,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:37:46,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:37:46,358 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:46,379 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-25 18:37:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:37:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 18:37:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:46,381 INFO L225 Difference]: With dead ends: 16 [2021-11-25 18:37:46,381 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 18:37:46,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:37:46,383 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:46,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:37:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 18:37:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 18:37:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-25 18:37:46,393 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-25 18:37:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:46,393 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-25 18:37:46,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,394 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-25 18:37:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:37:46,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:46,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:46,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:37:46,395 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2103326616, now seen corresponding path program 1 times [2021-11-25 18:37:46,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:46,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181205971] [2021-11-25 18:37:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:46,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:46,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:46,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181205971] [2021-11-25 18:37:46,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181205971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:46,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:46,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:37:46,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63510218] [2021-11-25 18:37:46,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:46,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:37:46,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:46,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:37:46,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:37:46,474 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:46,506 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-25 18:37:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:37:46,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-25 18:37:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:46,507 INFO L225 Difference]: With dead ends: 19 [2021-11-25 18:37:46,507 INFO L226 Difference]: Without dead ends: 18 [2021-11-25 18:37:46,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:37:46,512 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:46,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:37:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-25 18:37:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-25 18:37:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-25 18:37:46,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-11-25 18:37:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:46,531 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-25 18:37:46,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-25 18:37:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:37:46,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:46,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:46,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:37:46,533 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:46,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1378031940, now seen corresponding path program 1 times [2021-11-25 18:37:46,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:46,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73077003] [2021-11-25 18:37:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:46,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:46,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:46,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73077003] [2021-11-25 18:37:46,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73077003] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:37:46,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274652859] [2021-11-25 18:37:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:46,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:37:46,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:46,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:37:46,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:37:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:46,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:37:46,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:37:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:46,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:37:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:46,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274652859] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:37:46,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078539954] [2021-11-25 18:37:46,925 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:37:46,925 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:37:46,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:37:46,937 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:37:46,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:37:47,472 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:37:47,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2078539954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:47,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:37:47,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 13 [2021-11-25 18:37:47,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709985660] [2021-11-25 18:37:47,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:47,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:37:47,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:37:47,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:37:47,662 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:47,989 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-25 18:37:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:37:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 18:37:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:47,991 INFO L225 Difference]: With dead ends: 18 [2021-11-25 18:37:47,991 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:37:47,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:37:47,992 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:47,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:37:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:37:47,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 18:37:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-25 18:37:47,999 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2021-11-25 18:37:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:48,000 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-25 18:37:48,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-25 18:37:48,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 18:37:48,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:48,001 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-25 18:37:48,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:37:48,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 18:37:48,217 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:48,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1652055684, now seen corresponding path program 1 times [2021-11-25 18:37:48,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:48,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753913557] [2021-11-25 18:37:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:48,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:48,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:48,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753913557] [2021-11-25 18:37:48,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753913557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:37:48,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644190384] [2021-11-25 18:37:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:48,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:37:48,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:48,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:37:48,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:37:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:48,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 18:37:48,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:37:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:48,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:37:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:48,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644190384] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:37:48,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1384157182] [2021-11-25 18:37:48,650 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:37:48,650 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:37:48,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:37:48,651 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:37:48,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:37:48,963 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:37:49,305 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '510#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2021-11-25 18:37:49,306 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:37:49,306 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:37:49,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-11-25 18:37:49,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795323585] [2021-11-25 18:37:49,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:37:49,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 18:37:49,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:49,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 18:37:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:37:49,308 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:49,589 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-11-25 18:37:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:37:49,589 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-25 18:37:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:49,590 INFO L225 Difference]: With dead ends: 46 [2021-11-25 18:37:49,590 INFO L226 Difference]: Without dead ends: 45 [2021-11-25 18:37:49,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:37:49,592 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 42 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:49,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 21 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:37:49,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-25 18:37:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-25 18:37:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-11-25 18:37:49,602 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 16 [2021-11-25 18:37:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:49,602 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-11-25 18:37:49,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-11-25 18:37:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:37:49,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:49,607 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 1, 1, 1] [2021-11-25 18:37:49,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:37:49,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 18:37:49,828 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:49,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:49,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1816146556, now seen corresponding path program 2 times [2021-11-25 18:37:49,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:49,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641664052] [2021-11-25 18:37:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:49,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:50,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:50,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641664052] [2021-11-25 18:37:50,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641664052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:37:50,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651640095] [2021-11-25 18:37:50,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:37:50,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:37:50,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:50,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:37:50,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:37:50,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 18:37:50,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:37:50,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 18:37:50,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:37:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:50,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:37:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:50,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651640095] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:37:50,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2076887603] [2021-11-25 18:37:50,466 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:37:50,466 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:37:50,466 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:37:50,466 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:37:50,467 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:37:50,737 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:37:51,170 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '922#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2021-11-25 18:37:51,170 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:37:51,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:37:51,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-25 18:37:51,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672476062] [2021-11-25 18:37:51,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:37:51,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 18:37:51,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:51,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 18:37:51,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:37:51,173 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 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 18:37:51,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:51,436 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2021-11-25 18:37:51,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 18:37:51,437 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 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 44 [2021-11-25 18:37:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:51,439 INFO L225 Difference]: With dead ends: 95 [2021-11-25 18:37:51,439 INFO L226 Difference]: Without dead ends: 94 [2021-11-25 18:37:51,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 102 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=441, Invalid=1365, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 18:37:51,441 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 64 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:51,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 66 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:37:51,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-25 18:37:51,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-11-25 18:37:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-11-25 18:37:51,452 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 44 [2021-11-25 18:37:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:51,453 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-11-25 18:37:51,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 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 18:37:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-11-25 18:37:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:37:51,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:51,456 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 1, 1, 1] [2021-11-25 18:37:51,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:37:51,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 18:37:51,672 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:37:51,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:51,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1712481432, now seen corresponding path program 3 times [2021-11-25 18:37:51,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:51,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527480888] [2021-11-25 18:37:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:51,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:52,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:52,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527480888] [2021-11-25 18:37:52,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527480888] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:37:52,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63181162] [2021-11-25 18:37:52,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:37:52,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:37:52,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:52,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:37:52,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:37:52,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:37:52,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:37:52,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-25 18:37:52,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:37:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:53,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:37:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:57,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63181162] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:37:57,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [451071271] [2021-11-25 18:37:57,062 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:37:57,062 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:37:57,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:37:57,063 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:37:57,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:37:57,279 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:38:00,107 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1822#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2021-11-25 18:38:00,108 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:38:00,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:38:00,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 40, 40] total 103 [2021-11-25 18:38:00,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456790449] [2021-11-25 18:38:00,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:38:00,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-25 18:38:00,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:00,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-25 18:38:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1340, Invalid=10432, Unknown=0, NotChecked=0, Total=11772 [2021-11-25 18:38:00,117 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 104 states, 103 states have (on average 2.6601941747572817) internal successors, (274), 104 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:38:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:09,633 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2021-11-25 18:38:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-25 18:38:09,634 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.6601941747572817) internal successors, (274), 104 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 18:38:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:09,637 INFO L225 Difference]: With dead ends: 277 [2021-11-25 18:38:09,637 INFO L226 Difference]: Without dead ends: 276 [2021-11-25 18:38:09,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 171 SyntacticMatches, 26 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9136 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=7076, Invalid=31144, Unknown=0, NotChecked=0, Total=38220 [2021-11-25 18:38:09,654 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1870 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 3652 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 4291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 3652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:09,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1870 Valid, 104 Invalid, 4291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 3652 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 18:38:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-25 18:38:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-25 18:38:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.0036363636363637) internal successors, (276), 275 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:38:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2021-11-25 18:38:09,680 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 93 [2021-11-25 18:38:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:09,681 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2021-11-25 18:38:09,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.6601941747572817) internal successors, (274), 104 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:38:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2021-11-25 18:38:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-25 18:38:09,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:09,688 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 38, 1, 1, 1] [2021-11-25 18:38:09,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:38:09,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:38:09,903 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:38:09,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:09,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1930111464, now seen corresponding path program 4 times [2021-11-25 18:38:09,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:09,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060664772] [2021-11-25 18:38:09,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:09,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5187 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:38:12,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:12,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060664772] [2021-11-25 18:38:12,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060664772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:38:12,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242168642] [2021-11-25 18:38:12,176 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:38:12,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:12,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:38:12,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:38:12,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:38:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:12,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 157 conjunts are in the unsatisfiable core [2021-11-25 18:38:12,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:38:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5187 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:38:22,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:38:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5187 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:38:43,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242168642] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:38:43,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196900852] [2021-11-25 18:38:43,855 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:38:43,855 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:38:43,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:38:43,856 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:38:43,856 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:38:44,076 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:39:03,351 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4588#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2021-11-25 18:39:03,351 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:39:03,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:39:03,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 118, 118] total 311 [2021-11-25 18:39:03,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494454223] [2021-11-25 18:39:03,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:39:03,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 312 states [2021-11-25 18:39:03,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:39:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 312 interpolants. [2021-11-25 18:39:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11090, Invalid=89082, Unknown=0, NotChecked=0, Total=100172 [2021-11-25 18:39:03,369 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand has 312 states, 311 states have (on average 2.6366559485530545) internal successors, (820), 312 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:41:02,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:02,768 INFO L93 Difference]: Finished difference Result 823 states and 900 transitions. [2021-11-25 18:41:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 311 states. [2021-11-25 18:41:02,769 INFO L78 Accepts]: Start accepts. Automaton has has 312 states, 311 states have (on average 2.6366559485530545) internal successors, (820), 312 states have internal predecessors, (820), 0 states have call successors, (0), 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 275 [2021-11-25 18:41:02,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:02,776 INFO L225 Difference]: With dead ends: 823 [2021-11-25 18:41:02,776 INFO L226 Difference]: Without dead ends: 822 [2021-11-25 18:41:02,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 509 SyntacticMatches, 78 SemanticMatches, 584 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84679 ImplicationChecksByTransitivity, 153.2s TimeCoverageRelationStatistics Valid=63301, Invalid=279509, Unknown=0, NotChecked=0, Total=342810 [2021-11-25 18:41:02,802 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 14501 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 32452 mSolverCounterSat, 4288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14501 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 36740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4288 IncrementalHoareTripleChecker+Valid, 32452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:02,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14501 Valid, 319 Invalid, 36740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4288 Valid, 32452 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2021-11-25 18:41:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-25 18:41:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2021-11-25 18:41:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.0012180267965896) internal successors, (822), 821 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:41:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 822 transitions. [2021-11-25 18:41:02,867 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 822 transitions. Word has length 275 [2021-11-25 18:41:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:02,868 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 822 transitions. [2021-11-25 18:41:02,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 312 states, 311 states have (on average 2.6366559485530545) internal successors, (820), 312 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:41:02,870 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 822 transitions. [2021-11-25 18:41:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2021-11-25 18:41:02,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:02,890 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 117, 117, 117, 117, 116, 1, 1, 1] [2021-11-25 18:41:02,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:41:03,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:41:03,116 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:41:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1328769688, now seen corresponding path program 5 times [2021-11-25 18:41:03,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:41:03,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703523031] [2021-11-25 18:41:03,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:03,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:41:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 47502 backedges. 0 proven. 47502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:41:18,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:41:18,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703523031] [2021-11-25 18:41:18,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703523031] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:41:18,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635552634] [2021-11-25 18:41:18,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:41:18,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:41:18,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:41:18,857 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:41:18,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:41:19,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 117 check-sat command(s) [2021-11-25 18:41:19,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:41:19,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 269 conjunts are in the unsatisfiable core [2021-11-25 18:41:19,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:41:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 47502 backedges. 0 proven. 47502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:41:26,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:42:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 47502 backedges. 0 proven. 47502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:42:19,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635552634] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:42:19,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [53103575] [2021-11-25 18:42:19,074 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:42:19,074 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:42:19,074 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:42:19,074 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:42:19,075 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:42:19,297 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:43:08,262 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12466#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2021-11-25 18:43:08,262 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:43:08,262 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:43:08,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [235, 252, 252] total 535 [2021-11-25 18:43:08,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090214693] [2021-11-25 18:43:08,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:43:08,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 536 states [2021-11-25 18:43:08,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:43:08,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 536 interpolants. [2021-11-25 18:43:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54924, Invalid=237216, Unknown=0, NotChecked=0, Total=292140 [2021-11-25 18:43:08,296 INFO L87 Difference]: Start difference. First operand 822 states and 822 transitions. Second operand has 536 states, 535 states have (on average 3.285981308411215) internal successors, (1758), 536 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:35,068 INFO L93 Difference]: Finished difference Result 1761 states and 1894 transitions. [2021-11-25 18:44:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 535 states. [2021-11-25 18:44:35,070 INFO L78 Accepts]: Start accepts. Automaton has has 536 states, 535 states have (on average 3.285981308411215) internal successors, (1758), 536 states have internal predecessors, (1758), 0 states have call successors, (0), 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 821 [2021-11-25 18:44:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:35,081 INFO L225 Difference]: With dead ends: 1761 [2021-11-25 18:44:35,081 INFO L226 Difference]: Without dead ends: 1760 [2021-11-25 18:44:35,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3012 GetRequests, 1923 SyntacticMatches, 234 SemanticMatches, 855 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325601 ImplicationChecksByTransitivity, 178.0s TimeCoverageRelationStatistics Valid=173255, Invalid=560337, Unknown=0, NotChecked=0, Total=733592 [2021-11-25 18:44:35,125 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 11584 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 7978 mSolverCounterSat, 2836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11584 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 10814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2836 IncrementalHoareTripleChecker+Valid, 7978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:35,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11584 Valid, 963 Invalid, 10814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2836 Valid, 7978 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 18:44:35,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2021-11-25 18:44:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1760. [2021-11-25 18:44:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 1.000568504832291) internal successors, (1760), 1759 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 1760 transitions. [2021-11-25 18:44:35,212 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 1760 transitions. Word has length 821 [2021-11-25 18:44:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:35,214 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 1760 transitions. [2021-11-25 18:44:35,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 536 states, 535 states have (on average 3.285981308411215) internal successors, (1758), 536 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:44:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 1760 transitions. [2021-11-25 18:44:35,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1760 [2021-11-25 18:44:35,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:35,337 INFO L514 BasicCegarLoop]: trace histogram [251, 251, 251, 251, 251, 251, 250, 1, 1, 1] [2021-11-25 18:44:35,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 18:44:35,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:44:35,552 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:44:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:35,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1799638760, now seen corresponding path program 6 times [2021-11-25 18:44:35,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:44:35,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951260999] [2021-11-25 18:44:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:35,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:44:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:45:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 219625 backedges. 0 proven. 219625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:45:42,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:45:42,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951260999] [2021-11-25 18:45:42,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951260999] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:45:42,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805153608] [2021-11-25 18:45:42,844 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:45:42,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:45:42,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:45:42,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:45:42,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecb2dc9-ecef-43ef-9ca9-2b57fdde9350/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:45:43,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:45:43,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:45:43,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 3794 conjuncts, 1005 conjunts are in the unsatisfiable core [2021-11-25 18:45:43,879 INFO L286 TraceCheckSpWp]: Computing forward predicates...