./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be381633e08917ff7523167eb47da4558cd865b57872b34c3877295f48e457c8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:01:59,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:01:59,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:01:59,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:01:59,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:01:59,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:01:59,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:01:59,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:01:59,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:01:59,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:01:59,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:01:59,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:01:59,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:01:59,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:01:59,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:01:59,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:01:59,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:01:59,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:01:59,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:01:59,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:01:59,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:01:59,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:01:59,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:01:59,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:01:59,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:01:59,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:01:59,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:01:59,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:01:59,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:01:59,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:01:59,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:01:59,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:01:59,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:01:59,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:01:59,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:01:59,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:01:59,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:01:59,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:01:59,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:01:59,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:01:59,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:01:59,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 19:01:59,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:01:59,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:01:59,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:01:59,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:01:59,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:01:59,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:01:59,346 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:01:59,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:01:59,347 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:01:59,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:01:59,347 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:01:59,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:01:59,348 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:01:59,348 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:01:59,349 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:01:59,349 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:01:59,349 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:01:59,349 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:01:59,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:01:59,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:01:59,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:01:59,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:01:59,351 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:01:59,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:01:59,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:01:59,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:01:59,352 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:01:59,353 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:01:59,353 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:01:59,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:01:59,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:01:59,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:01:59,354 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:01:59,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:01:59,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:01:59,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:01:59,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:01:59,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:01:59,356 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:01:59,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:01:59,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:01:59,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:01:59,357 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be381633e08917ff7523167eb47da4558cd865b57872b34c3877295f48e457c8 [2021-11-25 19:01:59,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:01:59,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:01:59,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:01:59,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:01:59,691 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:01:59,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/memsafety/test-0158-1.i [2021-11-25 19:01:59,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/data/51fe3b154/d90449466e704bddafcba91442aaaa57/FLAG7b539337d [2021-11-25 19:02:00,384 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:02:00,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/sv-benchmarks/c/memsafety/test-0158-1.i [2021-11-25 19:02:00,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/data/51fe3b154/d90449466e704bddafcba91442aaaa57/FLAG7b539337d [2021-11-25 19:02:00,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/data/51fe3b154/d90449466e704bddafcba91442aaaa57 [2021-11-25 19:02:00,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:02:00,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:02:00,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:02:00,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:02:00,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:02:00,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:02:00" (1/1) ... [2021-11-25 19:02:00,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75963c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:00, skipping insertion in model container [2021-11-25 19:02:00,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:02:00" (1/1) ... [2021-11-25 19:02:00,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:02:00,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:02:01,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:02:01,114 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:02:01,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:02:01,197 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:02:01,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01 WrapperNode [2021-11-25 19:02:01,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:02:01,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:02:01,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:02:01,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:02:01,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,247 INFO L137 Inliner]: procedures = 123, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2021-11-25 19:02:01,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:02:01,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:02:01,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:02:01,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:02:01,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:02:01,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:02:01,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:02:01,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:02:01,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (1/1) ... [2021-11-25 19:02:01,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:02:01,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:02:01,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:02:01,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:02:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:02:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:02:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:02:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:02:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:02:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:02:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:02:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:02:01,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:02:01,565 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:02:01,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:02:01,754 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:02:01,770 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:02:01,770 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:02:01,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:02:01 BoogieIcfgContainer [2021-11-25 19:02:01,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:02:01,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:02:01,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:02:01,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:02:01,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:02:00" (1/3) ... [2021-11-25 19:02:01,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f393bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:02:01, skipping insertion in model container [2021-11-25 19:02:01,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:02:01" (2/3) ... [2021-11-25 19:02:01,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f393bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:02:01, skipping insertion in model container [2021-11-25 19:02:01,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:02:01" (3/3) ... [2021-11-25 19:02:01,784 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2021-11-25 19:02:01,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:02:01,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-25 19:02:01,858 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:02:01,867 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:02:01,868 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-25 19:02:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 8 states have (on average 2.25) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-25 19:02:01,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:01,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-25 19:02:01,917 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-11-25 19:02:01,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:01,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1678, now seen corresponding path program 1 times [2021-11-25 19:02:01,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:01,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927258275] [2021-11-25 19:02:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:01,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:02,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:02,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927258275] [2021-11-25 19:02:02,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927258275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:02,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:02,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 19:02:02,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130408071] [2021-11-25 19:02:02,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:02,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:02,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:02,196 INFO L87 Difference]: Start difference. First operand has 19 states, 8 states have (on average 2.25) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:02,249 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-11-25 19:02:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:02,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-25 19:02:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:02,260 INFO L225 Difference]: With dead ends: 16 [2021-11-25 19:02:02,261 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 19:02:02,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:02,267 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:02,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 5 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:02:02,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 19:02:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 19:02:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 8 states have (on average 1.75) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-11-25 19:02:02,303 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 2 [2021-11-25 19:02:02,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:02,303 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-11-25 19:02:02,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-11-25 19:02:02,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-25 19:02:02,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:02,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-25 19:02:02,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:02:02,305 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-11-25 19:02:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1679, now seen corresponding path program 1 times [2021-11-25 19:02:02,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:02,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436593667] [2021-11-25 19:02:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:02,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:02,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:02,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436593667] [2021-11-25 19:02:02,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436593667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:02,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:02,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 19:02:02,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604694112] [2021-11-25 19:02:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:02,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:02,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:02,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:02,376 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:02,399 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-11-25 19:02:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:02,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-25 19:02:02,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:02,403 INFO L225 Difference]: With dead ends: 12 [2021-11-25 19:02:02,418 INFO L226 Difference]: Without dead ends: 12 [2021-11-25 19:02:02,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:02,427 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:02,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 7 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:02:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-25 19:02:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-25 19:02:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-11-25 19:02:02,441 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 2 [2021-11-25 19:02:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:02,443 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-11-25 19:02:02,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-11-25 19:02:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:02:02,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:02,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:02:02,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:02:02,449 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-11-25 19:02:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash 50621959, now seen corresponding path program 1 times [2021-11-25 19:02:02,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:02,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961737420] [2021-11-25 19:02:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:02,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:02,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:02,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961737420] [2021-11-25 19:02:02,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961737420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:02,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:02,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:02:02,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658614958] [2021-11-25 19:02:02,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:02,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:02:02,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:02,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:02:02,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:02:02,589 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2021-11-25 19:02:02,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:02,625 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-11-25 19:02:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:02:02,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 5 [2021-11-25 19:02:02,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:02,626 INFO L225 Difference]: With dead ends: 11 [2021-11-25 19:02:02,627 INFO L226 Difference]: Without dead ends: 11 [2021-11-25 19:02:02,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:02:02,629 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:02,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:02:02,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-25 19:02:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-25 19:02:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.25) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-11-25 19:02:02,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 5 [2021-11-25 19:02:02,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:02,634 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-11-25 19:02:02,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2021-11-25 19:02:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-11-25 19:02:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:02:02,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:02,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:02:02,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:02:02,636 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-11-25 19:02:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1569280775, now seen corresponding path program 1 times [2021-11-25 19:02:02,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:02,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330686525] [2021-11-25 19:02:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:02,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:02,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:02,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330686525] [2021-11-25 19:02:02,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330686525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:02,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:02,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:02:02,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111005003] [2021-11-25 19:02:02,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:02,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:02:02,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:02:02,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:02:02,763 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:02,814 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-11-25 19:02:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:02:02,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 19:02:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:02,816 INFO L225 Difference]: With dead ends: 10 [2021-11-25 19:02:02,816 INFO L226 Difference]: Without dead ends: 10 [2021-11-25 19:02:02,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:02:02,818 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:02,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:02:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-25 19:02:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-25 19:02:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.125) internal successors, (9), 9 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2021-11-25 19:02:02,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 6 [2021-11-25 19:02:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:02,828 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2021-11-25 19:02:02,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2021-11-25 19:02:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:02:02,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:02,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:02,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:02:02,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-11-25 19:02:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:02,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1403063817, now seen corresponding path program 1 times [2021-11-25 19:02:02,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:02,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842417800] [2021-11-25 19:02:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:02,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:02,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:02,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842417800] [2021-11-25 19:02:02,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842417800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:02,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:02,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:02:02,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225906305] [2021-11-25 19:02:02,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:02,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:02:02,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:02,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:02:02,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:02:02,950 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:02,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:02,995 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-11-25 19:02:02,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:02:02,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 19:02:02,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:02,996 INFO L225 Difference]: With dead ends: 9 [2021-11-25 19:02:02,997 INFO L226 Difference]: Without dead ends: 9 [2021-11-25 19:02:02,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:02:02,999 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:02,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:02:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-25 19:02:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-25 19:02:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-25 19:02:03,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 7 [2021-11-25 19:02:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:03,003 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-25 19:02:03,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:03,003 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-25 19:02:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:02:03,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:03,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:03,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:02:03,005 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-11-25 19:02:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash 545305418, now seen corresponding path program 1 times [2021-11-25 19:02:03,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:03,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963876373] [2021-11-25 19:02:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:03,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:02:03,370 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:03,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963876373] [2021-11-25 19:02:03,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963876373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:03,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:03,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:02:03,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651048446] [2021-11-25 19:02:03,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:03,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:02:03,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:02:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:02:03,377 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:03,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:03,515 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-11-25 19:02:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:02:03,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:02:03,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:03,517 INFO L225 Difference]: With dead ends: 8 [2021-11-25 19:02:03,517 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:02:03,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:02:03,519 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:03,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:02:03,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:02:03,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:02:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:02:03,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-11-25 19:02:03,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:03,521 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:02:03,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:03,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:02:03,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:02:03,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (9 of 10 remaining) [2021-11-25 19:02:03,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (8 of 10 remaining) [2021-11-25 19:02:03,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (7 of 10 remaining) [2021-11-25 19:02:03,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (6 of 10 remaining) [2021-11-25 19:02:03,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (5 of 10 remaining) [2021-11-25 19:02:03,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (4 of 10 remaining) [2021-11-25 19:02:03,527 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (3 of 10 remaining) [2021-11-25 19:02:03,527 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 10 remaining) [2021-11-25 19:02:03,527 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 10 remaining) [2021-11-25 19:02:03,527 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2021-11-25 19:02:03,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:02:03,531 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-25 19:02:03,533 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:02:03,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:02:03 BoogieIcfgContainer [2021-11-25 19:02:03,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:02:03,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:02:03,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:02:03,555 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:02:03,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:02:01" (3/4) ... [2021-11-25 19:02:03,558 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:02:03,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-25 19:02:03,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-25 19:02:03,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 19:02:03,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:02:03,622 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:02:03,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:02:03,623 INFO L158 Benchmark]: Toolchain (without parser) took 2924.84ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 68.2MB in the beginning and 81.7MB in the end (delta: -13.6MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2021-11-25 19:02:03,624 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 111.1MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:02:03,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.22ms. Allocated memory is still 111.1MB. Free memory was 68.0MB in the beginning and 79.3MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:02:03,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.57ms. Allocated memory is still 111.1MB. Free memory was 79.3MB in the beginning and 77.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:02:03,625 INFO L158 Benchmark]: Boogie Preprocessor took 27.90ms. Allocated memory is still 111.1MB. Free memory was 77.6MB in the beginning and 76.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:02:03,626 INFO L158 Benchmark]: RCFGBuilder took 496.64ms. Allocated memory is still 111.1MB. Free memory was 76.4MB in the beginning and 65.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:02:03,626 INFO L158 Benchmark]: TraceAbstraction took 1777.61ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 65.5MB in the beginning and 83.8MB in the end (delta: -18.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-11-25 19:02:03,627 INFO L158 Benchmark]: Witness Printer took 68.52ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:02:03,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 111.1MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.22ms. Allocated memory is still 111.1MB. Free memory was 68.0MB in the beginning and 79.3MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.57ms. Allocated memory is still 111.1MB. Free memory was 79.3MB in the beginning and 77.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.90ms. Allocated memory is still 111.1MB. Free memory was 77.6MB in the beginning and 76.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 496.64ms. Allocated memory is still 111.1MB. Free memory was 76.4MB in the beginning and 65.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1777.61ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 65.5MB in the beginning and 83.8MB in the end (delta: -18.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Witness Printer took 68.52ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 81.7MB 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: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 20 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 28, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 251 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-25 19:02:03,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0865c1df-3aca-4022-bbdc-88962e91182d/bin/utaipan-eEHZpOm5b7/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