./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba --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 e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:34:40,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:34:40,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:34:40,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:34:40,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:34:40,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:34:40,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:34:40,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:34:40,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:34:40,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:34:40,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:34:40,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:34:40,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:34:40,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:34:40,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:34:40,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:34:40,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:34:40,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:34:40,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:34:40,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:34:40,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:34:40,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:34:40,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:34:40,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:34:40,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:34:40,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:34:40,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:34:40,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:34:40,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:34:40,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:34:40,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:34:40,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:34:40,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:34:40,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:34:40,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:34:40,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:34:40,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:34:40,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:34:40,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:34:40,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:34:40,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:34:40,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 00:34:40,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:34:40,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:34:40,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:34:40,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:34:40,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:34:40,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:34:40,262 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:34:40,262 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:34:40,262 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:34:40,262 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:34:40,263 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:34:40,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:34:40,264 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:34:40,264 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:34:40,264 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:34:40,265 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:34:40,265 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:34:40,265 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:34:40,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:34:40,267 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:34:40,267 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:34:40,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:34:40,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:34:40,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:34:40,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:34:40,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:34:40,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:34:40,269 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:34:40,269 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:34:40,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:34:40,270 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:34:40,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:34:40,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:34:40,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:34:40,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:34:40,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:34:40,272 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:34:40,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:34:40,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:34:40,273 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:34:40,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:34:40,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:34:40,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:34:40,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 [2022-11-22 00:34:40,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:34:40,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:34:40,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:34:40,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:34:40,684 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:34:40,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2022-11-22 00:34:43,787 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:34:43,967 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:34:43,968 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2022-11-22 00:34:43,974 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/data/4d14bb93d/42ef237f9ed448a6b800b3b3aebcc210/FLAG377a125e6 [2022-11-22 00:34:43,989 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/data/4d14bb93d/42ef237f9ed448a6b800b3b3aebcc210 [2022-11-22 00:34:43,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:34:43,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:34:43,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:34:43,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:34:43,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:34:43,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:34:43" (1/1) ... [2022-11-22 00:34:44,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fbfd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44, skipping insertion in model container [2022-11-22 00:34:44,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:34:43" (1/1) ... [2022-11-22 00:34:44,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:34:44,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:34:44,216 WARN L237 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_cd7ff207-aa57-4558-87eb-3976e541bf57/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2022-11-22 00:34:44,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:34:44,230 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:34:44,244 WARN L237 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_cd7ff207-aa57-4558-87eb-3976e541bf57/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2022-11-22 00:34:44,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:34:44,261 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:34:44,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44 WrapperNode [2022-11-22 00:34:44,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:34:44,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:34:44,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:34:44,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:34:44,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,294 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-22 00:34:44,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:34:44,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:34:44,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:34:44,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:34:44,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,329 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:34:44,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:34:44,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:34:44,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:34:44,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (1/1) ... [2022-11-22 00:34:44,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:34:44,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:44,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:34:44,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:34:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:34:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-11-22 00:34:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-11-22 00:34:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:34:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:34:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2022-11-22 00:34:44,427 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2022-11-22 00:34:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:34:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:34:44,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:34:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:34:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:34:44,513 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:34:44,516 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:34:44,712 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:34:44,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:34:44,761 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 00:34:44,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:34:44 BoogieIcfgContainer [2022-11-22 00:34:44,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:34:44,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:34:44,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:34:44,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:34:44,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:34:43" (1/3) ... [2022-11-22 00:34:44,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ffa130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:34:44, skipping insertion in model container [2022-11-22 00:34:44,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:44" (2/3) ... [2022-11-22 00:34:44,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ffa130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:34:44, skipping insertion in model container [2022-11-22 00:34:44,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:34:44" (3/3) ... [2022-11-22 00:34:44,778 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2022-11-22 00:34:44,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:34:44,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 00:34:44,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:34:44,888 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4088aebe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:34:44,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 00:34:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:34:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:34:44,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:44,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:44,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 00:34:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:44,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2024463617, now seen corresponding path program 1 times [2022-11-22 00:34:44,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:44,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545630736] [2022-11-22 00:34:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:44,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:45,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:45,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545630736] [2022-11-22 00:34:45,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545630736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:45,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:45,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:34:45,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800604232] [2022-11-22 00:34:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:45,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:34:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:34:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:34:45,610 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:45,769 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-11-22 00:34:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:34:45,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 00:34:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:45,780 INFO L225 Difference]: With dead ends: 29 [2022-11-22 00:34:45,780 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 00:34:45,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:34:45,790 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:45,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 00:34:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-22 00:34:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-22 00:34:45,824 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2022-11-22 00:34:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:45,825 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-22 00:34:45,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-22 00:34:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 00:34:45,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:45,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:45,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:34:45,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 00:34:45,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:45,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1440985683, now seen corresponding path program 1 times [2022-11-22 00:34:45,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:45,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519160370] [2022-11-22 00:34:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:45,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:46,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:46,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519160370] [2022-11-22 00:34:46,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519160370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:46,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213687285] [2022-11-22 00:34:46,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:46,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:46,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:46,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:34:46,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:34:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:46,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-22 00:34:46,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:46,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:34:46,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:46,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 26 [2022-11-22 00:34:47,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:34:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:47,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:34:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:47,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213687285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:34:47,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [222824181] [2022-11-22 00:34:47,320 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:34:47,321 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:34:47,325 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 00:34:47,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:34:47,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2022-11-22 00:34:47,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199105397] [2022-11-22 00:34:47,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:34:47,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-22 00:34:47,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-22 00:34:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2022-11-22 00:34:47,356 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 18 states have internal predecessors, (29), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:47,795 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2022-11-22 00:34:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 00:34:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 18 states have internal predecessors, (29), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 00:34:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:47,798 INFO L225 Difference]: With dead ends: 34 [2022-11-22 00:34:47,799 INFO L226 Difference]: Without dead ends: 33 [2022-11-22 00:34:47,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=1572, Unknown=0, NotChecked=0, Total=1806 [2022-11-22 00:34:47,802 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 43 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:47,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 34 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-22 00:34:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-11-22 00:34:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-11-22 00:34:47,817 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 14 [2022-11-22 00:34:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:47,818 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-11-22 00:34:47,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 18 states have internal predecessors, (29), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-11-22 00:34:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 00:34:47,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:47,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 00:34:47,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:34:48,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-22 00:34:48,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 00:34:48,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1720883270, now seen corresponding path program 1 times [2022-11-22 00:34:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:48,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175478352] [2022-11-22 00:34:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:48,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:48,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:48,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175478352] [2022-11-22 00:34:48,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175478352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:48,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800603250] [2022-11-22 00:34:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:48,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:48,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:48,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:34:48,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:34:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:48,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-22 00:34:48,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:48,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:34:48,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:34:48,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 26 [2022-11-22 00:34:48,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:34:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:48,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:34:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:49,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800603250] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:49,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:34:49,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 29 [2022-11-22 00:34:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939923463] [2022-11-22 00:34:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:49,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:34:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:34:49,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2022-11-22 00:34:49,085 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:49,298 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-11-22 00:34:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:34:49,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 00:34:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:49,299 INFO L225 Difference]: With dead ends: 30 [2022-11-22 00:34:49,299 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 00:34:49,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 00:34:49,301 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:49,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:34:49,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 00:34:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-22 00:34:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-11-22 00:34:49,309 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 15 [2022-11-22 00:34:49,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:49,310 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-11-22 00:34:49,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-11-22 00:34:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 00:34:49,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:49,311 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1] [2022-11-22 00:34:49,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:34:49,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:49,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 00:34:49,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash -49694061, now seen corresponding path program 2 times [2022-11-22 00:34:49,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:49,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841716432] [2022-11-22 00:34:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:49,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:50,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841716432] [2022-11-22 00:34:50,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841716432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:34:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118870076] [2022-11-22 00:34:50,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:34:50,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:50,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:34:50,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:34:50,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:34:50,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 00:34:50,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:34:50,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 00:34:50,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:50,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:34:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 00:34:50,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:34:50,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118870076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:50,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:34:50,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 25 [2022-11-22 00:34:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696311838] [2022-11-22 00:34:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:50,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:34:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:34:50,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-11-22 00:34:50,512 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:50,559 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-11-22 00:34:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:34:50,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-22 00:34:50,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:50,560 INFO L225 Difference]: With dead ends: 29 [2022-11-22 00:34:50,561 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 00:34:50,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-11-22 00:34:50,563 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:50,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 13 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:34:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 00:34:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 00:34:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 00:34:50,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-11-22 00:34:50,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:50,569 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 00:34:50,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:50,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 00:34:50,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 00:34:50,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-22 00:34:50,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-22 00:34:50,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:34:50,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:50,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 00:34:51,149 INFO L899 garLoopResultBuilder]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2022-11-22 00:34:51,150 INFO L895 garLoopResultBuilder]: At program point fooENTRY(lines 11 20) the Hoare annotation is: (let ((.cse1 (select |old(#memory_int)| |foo_#in~p.base|))) (let ((.cse5 (select .cse1 |foo_#in~p.offset|)) (.cse2 (select |#memory_int| |foo_#in~p.base|))) (let ((.cse0 (not (= |foo_#in~p.offset| 0))) (.cse4 (select .cse2 |foo_#in~p.offset|)) (.cse3 (not (< 0 (+ 2147483650 .cse5))))) (and (or .cse0 (not (<= (select .cse1 0) 11)) (<= (select .cse2 0) 11) .cse3) (or (= .cse4 10) .cse0 (not (= .cse5 10))) (or (not (< .cse5 2147483647)) .cse3 (< .cse4 2147483647)) (or (< 0 (+ .cse4 2147483650)) .cse3))))) [2022-11-22 00:34:51,150 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (let ((.cse3 (select |old(#memory_int)| |foo_#in~p.base|))) (let ((.cse1 (select |#memory_int| |foo_#in~p.base|)) (.cse0 (select |#memory_int| foo_~p.base)) (.cse7 (select .cse3 |foo_#in~p.offset|))) (let ((.cse2 (not (= |foo_#in~p.offset| 0))) (.cse4 (not (< 0 (+ 2147483650 .cse7)))) (.cse6 (select .cse0 foo_~p.offset)) (.cse5 (select .cse1 |foo_#in~p.offset|))) (and (or (and (<= (select .cse0 0) 11) (<= (select .cse1 0) 11) (= foo_~p.offset 0)) .cse2 (not (<= (select .cse3 0) 11)) .cse4) (or (and (= .cse5 10) (= .cse6 10)) .cse2 (not (= .cse7 10))) (or (not (< .cse7 2147483647)) .cse4 (< .cse5 2147483647)) (or .cse4 (and (<= .cse6 19) (< 0 (+ .cse6 2147483650)) (< 0 (+ .cse5 2147483650)))))))) [2022-11-22 00:34:51,151 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 19) no Hoare annotation was computed. [2022-11-22 00:34:51,151 INFO L899 garLoopResultBuilder]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2022-11-22 00:34:51,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 00:34:51,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 00:34:51,151 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 10) (= |ULTIMATE.start_main_~p~0#1.offset| 0)) [2022-11-22 00:34:51,151 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-11-22 00:34:51,151 INFO L899 garLoopResultBuilder]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2022-11-22 00:34:51,151 INFO L895 garLoopResultBuilder]: At program point plusENTRY(lines 6 9) the Hoare annotation is: (let ((.cse5 (select |old(#memory_int)| |plus_#in~p.base|))) (let ((.cse0 (select .cse5 |plus_#in~p.offset|)) (.cse3 (select |#memory_int| |plus_#in~p.base|))) (let ((.cse1 (not (= |plus_#in~p.offset| 0))) (.cse2 (select .cse3 |plus_#in~p.offset|)) (.cse4 (not (< 0 (+ 2147483650 .cse0))))) (and (or (not (= .cse0 10)) .cse1 (= .cse2 10)) (or .cse1 (<= (select .cse3 0) 11) .cse4 (not (<= (select .cse5 0) 11))) (or (and (< 0 (+ 2147483650 .cse2)) (<= .cse2 19)) .cse4 (not (<= .cse0 19))))))) [2022-11-22 00:34:51,152 INFO L899 garLoopResultBuilder]: For program point plusErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2022-11-22 00:34:51,152 INFO L899 garLoopResultBuilder]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2022-11-22 00:34:51,152 INFO L895 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (let ((.cse7 (select |old(#memory_int)| |plus_#in~p.base|))) (let ((.cse0 (select .cse7 |plus_#in~p.offset|)) (.cse3 (select |#memory_int| plus_~p.base)) (.cse2 (select |#memory_int| |plus_#in~p.base|))) (let ((.cse4 (select .cse2 |plus_#in~p.offset|)) (.cse5 (select .cse3 plus_~p.offset)) (.cse1 (not (= |plus_#in~p.offset| 0))) (.cse6 (not (< 0 (+ 2147483650 .cse0))))) (and (or (not (= .cse0 10)) .cse1 (and (<= (select .cse2 0) 11) (<= (select .cse3 0) 11) (= plus_~p.offset 0))) (or (and (< 0 (+ 2147483650 .cse4)) (< 0 (+ .cse5 2147483650))) .cse6 (not (<= .cse0 19))) (or (and (< .cse4 2147483646) (< .cse5 2147483647)) .cse1 .cse6 (not (<= (select .cse7 0) 11))))))) [2022-11-22 00:34:51,152 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-22 00:34:51,152 INFO L899 garLoopResultBuilder]: For program point plusErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2022-11-22 00:34:51,152 INFO L899 garLoopResultBuilder]: For program point L7-1(line 7) no Hoare annotation was computed. [2022-11-22 00:34:51,157 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-11-22 00:34:51,159 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:34:51,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:34:51 BoogieIcfgContainer [2022-11-22 00:34:51,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:34:51,167 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:34:51,167 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:34:51,167 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:34:51,168 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:34:44" (3/4) ... [2022-11-22 00:34:51,170 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 00:34:51,176 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2022-11-22 00:34:51,176 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2022-11-22 00:34:51,182 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-22 00:34:51,183 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-22 00:34:51,183 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 00:34:51,183 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 00:34:51,183 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 00:34:51,220 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:34:51,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:34:51,221 INFO L158 Benchmark]: Toolchain (without parser) took 7227.31ms. Allocated memory was 163.6MB in the beginning and 264.2MB in the end (delta: 100.7MB). Free memory was 117.1MB in the beginning and 197.2MB in the end (delta: -80.1MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-11-22 00:34:51,221 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 163.6MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:34:51,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.25ms. Allocated memory is still 163.6MB. Free memory was 117.1MB in the beginning and 107.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 00:34:51,221 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.20ms. Allocated memory is still 163.6MB. Free memory was 107.3MB in the beginning and 105.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:34:51,222 INFO L158 Benchmark]: Boogie Preprocessor took 42.37ms. Allocated memory is still 163.6MB. Free memory was 105.7MB in the beginning and 104.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:34:51,222 INFO L158 Benchmark]: RCFGBuilder took 425.79ms. Allocated memory is still 163.6MB. Free memory was 104.4MB in the beginning and 92.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 00:34:51,223 INFO L158 Benchmark]: TraceAbstraction took 6394.41ms. Allocated memory was 163.6MB in the beginning and 264.2MB in the end (delta: 100.7MB). Free memory was 92.4MB in the beginning and 200.3MB in the end (delta: -108.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:34:51,223 INFO L158 Benchmark]: Witness Printer took 53.38ms. Allocated memory is still 264.2MB. Free memory was 200.3MB in the beginning and 197.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:34:51,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 163.6MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.25ms. Allocated memory is still 163.6MB. Free memory was 117.1MB in the beginning and 107.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.20ms. Allocated memory is still 163.6MB. Free memory was 107.3MB in the beginning and 105.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.37ms. Allocated memory is still 163.6MB. Free memory was 105.7MB in the beginning and 104.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 425.79ms. Allocated memory is still 163.6MB. Free memory was 104.4MB in the beginning and 92.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6394.41ms. Allocated memory was 163.6MB in the beginning and 264.2MB in the end (delta: 100.7MB). Free memory was 92.4MB in the beginning and 200.3MB in the end (delta: -108.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 53.38ms. Allocated memory is still 264.2MB. Free memory was 200.3MB in the beginning and 197.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 7]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 311 IncrementalHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 28 mSDtfsCounter, 311 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 436 HoareAnnotationTreeSize, 17 FomulaSimplifications, 73 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 312 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 121 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 897 SizeOfPredicates, 44 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 46/105 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 00:34:51,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7ff207-aa57-4558-87eb-3976e541bf57/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE