./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-linkedlists/nondet_ll_traverse-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-memory-linkedlists/nondet_ll_traverse-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c47766edbe35945888da0e666621820e243afbf3dd7b3834c6061366b6fb2a75 --- 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-8393723 [2022-11-19 05:18:19,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 05:18:19,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 05:18:19,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 05:18:19,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 05:18:19,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 05:18:19,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 05:18:19,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 05:18:19,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 05:18:19,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 05:18:19,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 05:18:19,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 05:18:19,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 05:18:19,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 05:18:19,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 05:18:19,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 05:18:19,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 05:18:19,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 05:18:19,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 05:18:19,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 05:18:19,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 05:18:19,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 05:18:19,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 05:18:19,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 05:18:19,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 05:18:19,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 05:18:19,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 05:18:19,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 05:18:19,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 05:18:19,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 05:18:19,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 05:18:19,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 05:18:19,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 05:18:19,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 05:18:19,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 05:18:19,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 05:18:19,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 05:18:19,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 05:18:19,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 05:18:19,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 05:18:19,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 05:18:19,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 05:18:19,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 05:18:19,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 05:18:19,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 05:18:19,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 05:18:19,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 05:18:19,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 05:18:19,290 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 05:18:19,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 05:18:19,290 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 05:18:19,290 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 05:18:19,291 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 05:18:19,291 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 05:18:19,291 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 05:18:19,291 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 05:18:19,291 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 05:18:19,292 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 05:18:19,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 05:18:19,292 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 05:18:19,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 05:18:19,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 05:18:19,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 05:18:19,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 05:18:19,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 05:18:19,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 05:18:19,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 05:18:19,294 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 05:18:19,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 05:18:19,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 05:18:19,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 05:18:19,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 05:18:19,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 05:18:19,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:18:19,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 05:18:19,296 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 05:18:19,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 05:18:19,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 05:18:19,297 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 05:18:19,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 05:18:19,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 05:18:19,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 05:18:19,298 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_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c47766edbe35945888da0e666621820e243afbf3dd7b3834c6061366b6fb2a75 [2022-11-19 05:18:19,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 05:18:19,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 05:18:19,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 05:18:19,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 05:18:19,694 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 05:18:19,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-memory-linkedlists/nondet_ll_traverse-alloca.i [2022-11-19 05:18:19,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/data/6429261b2/bef981266bc04d2a8bf4d23dfeb86cbd/FLAGbf136a99f [2022-11-19 05:18:20,309 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 05:18:20,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/sv-benchmarks/c/termination-memory-linkedlists/nondet_ll_traverse-alloca.i [2022-11-19 05:18:20,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/data/6429261b2/bef981266bc04d2a8bf4d23dfeb86cbd/FLAGbf136a99f [2022-11-19 05:18:20,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/data/6429261b2/bef981266bc04d2a8bf4d23dfeb86cbd [2022-11-19 05:18:20,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 05:18:20,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 05:18:20,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 05:18:20,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 05:18:20,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 05:18:20,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:20" (1/1) ... [2022-11-19 05:18:20,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a4e37eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:20, skipping insertion in model container [2022-11-19 05:18:20,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:20" (1/1) ... [2022-11-19 05:18:20,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 05:18:20,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 05:18:21,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:18:21,070 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 05:18:21,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:18:21,167 INFO L208 MainTranslator]: Completed translation [2022-11-19 05:18:21,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21 WrapperNode [2022-11-19 05:18:21,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 05:18:21,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 05:18:21,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 05:18:21,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 05:18:21,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,253 INFO L138 Inliner]: procedures = 114, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-19 05:18:21,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 05:18:21,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 05:18:21,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 05:18:21,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 05:18:21,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,306 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 05:18:21,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 05:18:21,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 05:18:21,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 05:18:21,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (1/1) ... [2022-11-19 05:18:21,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:18:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:18:21,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 05:18:21,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 05:18:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 05:18:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 05:18:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 05:18:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 05:18:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 05:18:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 05:18:21,584 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 05:18:21,586 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 05:18:21,786 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 05:18:21,859 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 05:18:21,859 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 05:18:21,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:21 BoogieIcfgContainer [2022-11-19 05:18:21,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 05:18:21,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 05:18:21,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 05:18:21,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 05:18:21,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:18:20" (1/3) ... [2022-11-19 05:18:21,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d964bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:21, skipping insertion in model container [2022-11-19 05:18:21,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:21" (2/3) ... [2022-11-19 05:18:21,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d964bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:21, skipping insertion in model container [2022-11-19 05:18:21,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:21" (3/3) ... [2022-11-19 05:18:21,879 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet_ll_traverse-alloca.i [2022-11-19 05:18:21,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 05:18:21,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 05:18:21,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 05:18:21,962 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;@55a86a12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 05:18:21,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 05:18:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 5 states have (on average 1.8) internal successors, (9), 7 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) [2022-11-19 05:18:21,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 05:18:21,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:18:21,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 05:18:21,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-19 05:18:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:18:21,982 INFO L85 PathProgramCache]: Analyzing trace with hash 78319, now seen corresponding path program 1 times [2022-11-19 05:18:21,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:18:21,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250480345] [2022-11-19 05:18:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:18:21,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:18:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:18:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 05:18:22,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:18:22,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250480345] [2022-11-19 05:18:22,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250480345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:18:22,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:18:22,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 05:18:22,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839194339] [2022-11-19 05:18:22,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:18:22,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:18:22,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:18:22,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:18:22,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 05:18:22,400 INFO L87 Difference]: Start difference. First operand has 8 states, 5 states have (on average 1.8) internal successors, (9), 7 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2022-11-19 05:18:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:18:22,470 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-11-19 05:18:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 05:18:22,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 [2022-11-19 05:18:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:18:22,482 INFO L225 Difference]: With dead ends: 15 [2022-11-19 05:18:22,482 INFO L226 Difference]: Without dead ends: 10 [2022-11-19 05:18:22,485 INFO L412 NwaCegarLoop]: 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 [2022-11-19 05:18:22,489 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 05:18:22,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 05:18:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-19 05:18:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2022-11-19 05:18:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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) [2022-11-19 05:18:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-19 05:18:22,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2022-11-19 05:18:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:18:22,523 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-19 05:18:22,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2022-11-19 05:18:22,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-19 05:18:22,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 05:18:22,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:18:22,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 05:18:22,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 05:18:22,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-19 05:18:22,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:18:22,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2427935, now seen corresponding path program 1 times [2022-11-19 05:18:22,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:18:22,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57261993] [2022-11-19 05:18:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:18:22,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:18:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:18:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 05:18:22,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:18:22,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57261993] [2022-11-19 05:18:22,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57261993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:18:22,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:18:22,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 05:18:22,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216581229] [2022-11-19 05:18:22,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:18:22,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:18:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:18:22,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:18:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 05:18:22,651 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 05:18:22,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:18:22,685 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2022-11-19 05:18:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 05:18:22,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 05:18:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:18:22,686 INFO L225 Difference]: With dead ends: 10 [2022-11-19 05:18:22,686 INFO L226 Difference]: Without dead ends: 9 [2022-11-19 05:18:22,687 INFO L412 NwaCegarLoop]: 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 [2022-11-19 05:18:22,688 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5 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 [2022-11-19 05:18:22,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 05:18:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-19 05:18:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-19 05:18:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2022-11-19 05:18:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 05:18:22,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2022-11-19 05:18:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:18:22,693 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 05:18:22,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 05:18:22,694 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 05:18:22,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 05:18:22,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:18:22,694 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 05:18:22,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 05:18:22,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-19 05:18:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:18:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1961719361, now seen corresponding path program 1 times [2022-11-19 05:18:22,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:18:22,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142430046] [2022-11-19 05:18:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:18:22,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:18:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:18:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 05:18:22,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:18:22,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142430046] [2022-11-19 05:18:22,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142430046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 05:18:22,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603398955] [2022-11-19 05:18:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:18:22,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:18:22,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:18:22,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 05:18:22,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 05:18:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:18:23,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 05:18:23,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:18:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 05:18:23,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:18:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 05:18:23,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603398955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 05:18:23,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1287128235] [2022-11-19 05:18:23,183 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-19 05:18:23,183 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 05:18:23,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 05:18:23,193 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 05:18:23,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 05:18:23,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 05:18:23,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-19 05:18:23,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 05:18:23,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 05:18:23,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-19 05:18:23,450 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 05:18:23,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 05:18:23,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 05:18:23,487 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 05:18:23,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 22 [2022-11-19 05:18:23,524 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 05:18:23,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2022-11-19 05:18:23,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-19 05:18:23,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-19 05:18:23,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 05:18:23,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 05:18:23,962 INFO L321 Elim1Store]: treesize reduction 113, result has 25.7 percent of original size [2022-11-19 05:18:23,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 213 treesize of output 203 [2022-11-19 05:18:24,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 05:18:24,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 169 [2022-11-19 05:18:24,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 05:18:24,089 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-19 05:18:24,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 182 [2022-11-19 05:18:24,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 05:18:24,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 163 [2022-11-19 05:18:24,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 05:18:24,177 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-19 05:18:24,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 176 [2022-11-19 05:18:24,307 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-19 05:18:24,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 165 treesize of output 184 [2022-11-19 05:18:24,410 INFO L321 Elim1Store]: treesize reduction 62, result has 24.4 percent of original size [2022-11-19 05:18:24,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 170 [2022-11-19 05:18:25,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 05:18:25,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-19 05:18:25,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 05:18:25,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-19 05:18:25,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 05:18:25,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-19 05:18:25,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 05:18:25,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 05:18:25,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 05:18:25,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 05:18:25,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 05:18:25,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-19 05:18:25,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 05:18:25,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-19 05:18:25,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 05:18:25,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-19 05:18:25,451 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 05:18:25,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1287128235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:18:25,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 05:18:25,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 10 [2022-11-19 05:18:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765350387] [2022-11-19 05:18:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:18:25,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:18:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:18:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:18:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-19 05:18:25,780 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 05:18:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:18:25,791 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-11-19 05:18:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 05:18:25,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 05:18:25,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:18:25,792 INFO L225 Difference]: With dead ends: 9 [2022-11-19 05:18:25,792 INFO L226 Difference]: Without dead ends: 8 [2022-11-19 05:18:25,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-19 05:18:25,794 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 05:18:25,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-19 05:18:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-19 05:18:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-19 05:18:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-19 05:18:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-19 05:18:25,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-19 05:18:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:18:25,799 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-19 05:18:25,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 05:18:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-19 05:18:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 05:18:25,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:18:25,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-19 05:18:25,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 05:18:26,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:18:26,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-19 05:18:26,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:18:26,008 INFO L85 PathProgramCache]: Analyzing trace with hash -683758001, now seen corresponding path program 1 times [2022-11-19 05:18:26,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:18:26,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657738705] [2022-11-19 05:18:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:18:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:18:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:18:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 05:18:26,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:18:26,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657738705] [2022-11-19 05:18:26,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657738705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:18:26,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:18:26,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 05:18:26,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735452611] [2022-11-19 05:18:26,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:18:26,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 05:18:26,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:18:26,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 05:18:26,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 05:18:26,124 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 05:18:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:18:26,164 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-11-19 05:18:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 05:18:26,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 05:18:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:18:26,166 INFO L225 Difference]: With dead ends: 8 [2022-11-19 05:18:26,166 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 05:18:26,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 05:18:26,167 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 05:18:26,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 05:18:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 05:18:26,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 05:18:26,169 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) [2022-11-19 05:18:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 05:18:26,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-11-19 05:18:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:18:26,170 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 05:18:26,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 05:18:26,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 05:18:26,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 05:18:26,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-19 05:18:26,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-19 05:18:26,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 05:18:26,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 05:18:26,274 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 552) no Hoare annotation was computed. [2022-11-19 05:18:26,274 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 05:18:26,274 INFO L899 garLoopResultBuilder]: For program point L552-3(line 552) no Hoare annotation was computed. [2022-11-19 05:18:26,274 INFO L899 garLoopResultBuilder]: For program point L552-4(line 552) no Hoare annotation was computed. [2022-11-19 05:18:26,275 INFO L895 garLoopResultBuilder]: At program point L552-5(lines 552 557) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~n~0#1| 2147483647)) (.cse1 (<= 0 (+ |ULTIMATE.start_init_nondet_ll_#in~n#1| 2147483648))) (.cse2 (<= 0 |ULTIMATE.start_init_nondet_ll_~head~0#1.offset|)) (.cse3 (<= |ULTIMATE.start_init_nondet_ll_~head~0#1.offset| 0)) (.cse4 (<= 0 |ULTIMATE.start_init_nondet_ll_~curr~0#1.offset|)) (.cse5 (<= |#NULL.offset| 0)) (.cse6 (<= |ULTIMATE.start_init_nondet_ll_#in~n#1| 2147483647)) (.cse7 (<= |ULTIMATE.start_init_nondet_ll_~curr~0#1.offset| 0)) (.cse8 (<= |ULTIMATE.start_init_nondet_ll_~n#1| 2147483647)) (.cse9 (<= 0 |#NULL.offset|)) (.cse10 (<= 0 (+ |ULTIMATE.start_init_nondet_ll_~n#1| 2147483648))) (.cse11 (<= 0 |#StackHeapBarrier|)) (.cse12 (= |#NULL.base| 0)) (.cse13 (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))) (or (and .cse0 (= |ULTIMATE.start_init_nondet_ll_~i~0#1| 1) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= 2 |ULTIMATE.start_init_nondet_ll_~i~0#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))) [2022-11-19 05:18:26,275 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 552) no Hoare annotation was computed. [2022-11-19 05:18:26,275 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 05:18:26,276 INFO L902 garLoopResultBuilder]: At program point L567-2(lines 567 569) the Hoare annotation is: true [2022-11-19 05:18:26,279 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 05:18:26,282 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 05:18:26,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:18:26 BoogieIcfgContainer [2022-11-19 05:18:26,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 05:18:26,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 05:18:26,324 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 05:18:26,325 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 05:18:26,326 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:21" (3/4) ... [2022-11-19 05:18:26,329 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 05:18:26,340 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-19 05:18:26,341 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-19 05:18:26,341 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 05:18:26,341 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 05:18:26,370 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((n <= 2147483647 && i == 1) && 0 <= \old(n) + 2147483648) && 0 <= head) && head <= 0) && 0 <= curr) && #NULL <= 0) && \old(n) <= 2147483647) && curr <= 0) && n <= 2147483647) && 0 <= #NULL) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) && 0 <= n + 2147483648) || ((((((((((((((n <= 2147483647 && 0 <= \old(n) + 2147483648) && 0 <= head) && head <= 0) && 0 <= curr) && #NULL <= 0) && 2 <= i) && \old(n) <= 2147483647) && curr <= 0) && n <= 2147483647) && 0 <= #NULL) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) && 0 <= n + 2147483648) [2022-11-19 05:18:26,385 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 05:18:26,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 05:18:26,386 INFO L158 Benchmark]: Toolchain (without parser) took 5757.61ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 99.7MB in the beginning and 80.2MB in the end (delta: 19.5MB). Peak memory consumption was 73.8MB. Max. memory is 16.1GB. [2022-11-19 05:18:26,387 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 05:18:26,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.20ms. Allocated memory is still 138.4MB. Free memory was 99.5MB in the beginning and 108.9MB in the end (delta: -9.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 05:18:26,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.56ms. Allocated memory is still 138.4MB. Free memory was 108.9MB in the beginning and 107.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 05:18:26,388 INFO L158 Benchmark]: Boogie Preprocessor took 61.22ms. Allocated memory is still 138.4MB. Free memory was 107.5MB in the beginning and 106.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 05:18:26,389 INFO L158 Benchmark]: RCFGBuilder took 545.55ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 90.7MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 05:18:26,390 INFO L158 Benchmark]: TraceAbstraction took 4457.14ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 90.1MB in the beginning and 82.3MB in the end (delta: 7.8MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. [2022-11-19 05:18:26,390 INFO L158 Benchmark]: Witness Printer took 62.56ms. Allocated memory is still 192.9MB. Free memory was 82.3MB in the beginning and 80.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 05:18:26,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 537.20ms. Allocated memory is still 138.4MB. Free memory was 99.5MB in the beginning and 108.9MB in the end (delta: -9.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.56ms. Allocated memory is still 138.4MB. Free memory was 108.9MB in the beginning and 107.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.22ms. Allocated memory is still 138.4MB. Free memory was 107.5MB in the beginning and 106.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 545.55ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 90.7MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4457.14ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 90.1MB in the beginning and 82.3MB in the end (delta: 7.8MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. * Witness Printer took 62.56ms. Allocated memory is still 192.9MB. Free memory was 82.3MB in the beginning and 80.2MB in the end (delta: 2.1MB). 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: 552]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 552]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 4 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, InterpolantAutomatonStates: 19, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 106 HoareAnnotationTreeSize, 2 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 2 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 3/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 3, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 13, TOOLS_POST_TIME: 2.1s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 13, TOOLS_QUANTIFIERELIM_TIME: 2.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 1.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 26, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 3, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 1.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 28, DAG_COMPRESSION_RETAINED_NODES: 18, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 552]: Loop Invariant Derived loop invariant: ((((((((((((((n <= 2147483647 && i == 1) && 0 <= \old(n) + 2147483648) && 0 <= head) && head <= 0) && 0 <= curr) && #NULL <= 0) && \old(n) <= 2147483647) && curr <= 0) && n <= 2147483647) && 0 <= #NULL) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) && 0 <= n + 2147483648) || ((((((((((((((n <= 2147483647 && 0 <= \old(n) + 2147483648) && 0 <= head) && head <= 0) && 0 <= curr) && #NULL <= 0) && 2 <= i) && \old(n) <= 2147483647) && curr <= 0) && n <= 2147483647) && 0 <= #NULL) && 0 <= n + 2147483648) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) && 0 <= n + 2147483648) - InvariantResult [Line: 567]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 05:18:26,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2093e01-4ac0-408b-a2d7-50f9533e577d/bin/utaipan-I9t0OCRTmS/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